Soil is not just a passive environment where plants grow, but a dynamic, living system that plays a critical role in agricultural success. While it is often perceived as a vast reservoir of water, nutrients, microbes, and organic matter, assuming that plants will simply draw from these resources as needed, this viewpoint oversimplifies the true complexity of soil-plant interaction. For farmers seeking to optimise crop yields and soil efficiency, it is vital to grasp the fundamental processes that govern the relationship between soil properties, root systems, and nutrient availability. By deepening our understanding of these factors, we can unlock the full potential of our land, improve plant health, and maximise the return on agricultural investments.

The Importance of Soil Chemistry in Plant Growth

At the core of soil and plant interaction lies soil chemistry. The ability of soil to supply essential nutrients, facilitate water movement, and support microbial life directly influences plant growth and productivity. Understanding the chemical properties of soil, such as pH, cation exchange capacity (CEC), and organic matter content, allows farmers to make informed decisions regarding fertiliser application and soil management.

Soil pH, for instance, significantly impacts nutrient availability. In highly acidic or alkaline soils, certain nutrients become less available to plants, resulting in poor growth. By adjusting soil pH through the application of lime or sulphur, farmers can ensure that nutrients are in their most bioavailable form, enabling crops to take up nutrients more efficiently. Cation exchange capacity is another key factor, as it reflects the soil’s ability to hold and exchange nutrients. Soils with high CEC have a greater capacity to retain essential cations such as potassium, magnesium, and calcium, reducing nutrient leaching and improving plant uptake.

Soil Structure and Its Impact on Root Development

Soil structure—the arrangement of soil particles into aggregates—also plays a crucial role in plant growth. Well-structured soils have good aeration, water-holding capacity, and root penetration, allowing roots to explore a larger volume of soil and access more nutrients. Compacted soils, on the other hand, restrict root growth, reduce water infiltration, and limit oxygen availability, all of which negatively affect plant health.

Farmers can improve soil structure by incorporating organic matter, such as compost or cover crops, into their fields. Organic matter acts as a binding agent, promoting the formation of stable soil aggregates. Additionally, no-till or reduced-till farming practices can help maintain soil structure by minimising soil disturbance and promoting the activity of soil organisms like earthworms, which play a key role in creating channels for water and air movement.

Nutrient Uptake Mechanisms: How Plants Absorb Essential Elements

To understand how plants interact with soil, it is essential to explore the mechanisms by which they absorb nutrients. Nutrient uptake is not a passive process; rather, it involves a combination of root growth, soil properties, and chemical interactions. There are three primary mechanisms through which plants acquire nutrients: interception, mass flow, and diffusion.

1. Interception: Direct Root Contact with Nutrients

Interception occurs when plant roots physically encounter nutrients as they grow through the soil. Although this mechanism only accounts for a small percentage of nutrient uptake—approximately 1% for maize—it plays a role in absorbing nutrients such as phosphorus, potassium, and zinc. The efficiency of interception depends on root density, soil structure, and the availability of nutrients in the soil. In well-structured soils with an abundance of organic matter, root growth is more extensive, increasing the chances of direct contact with essential nutrients.

2. Mass Flow: Nutrients Carried by Water

Mass flow is the movement of nutrients dissolved in soil water towards the roots as plants take up water. This mechanism is particularly important for the uptake of nutrients that are mobile in the soil, such as nitrogen (in the form of nitrate), calcium, and sulphur. In environments with adequate rainfall or irrigation, mass flow is a dominant mechanism for nutrient uptake. However, in dry conditions, the effectiveness of mass flow decreases, making it important for farmers to monitor soil moisture levels and adjust irrigation practices accordingly.

3. Diffusion: Movement of Nutrients from High to Low Concentration

Diffusion is the movement of nutrients from areas of higher concentration to areas of lower concentration, driven by a concentration gradient. This mechanism is particularly important for nutrients like phosphorus, potassium, and zinc, which are less mobile in the soil. These nutrients are often bound to soil particles and need to diffuse through the soil solution to reach plant roots. Farmers can improve diffusion by placing fertilisers close to the root zone, ensuring that nutrients are within reach of the growing roots.

The Role of the Rhizosphere in Nutrient Availability

The rhizosphere—the narrow region of soil surrounding plant roots—is a hotspot of biological activity and plays a critical role in nutrient availability. Root exudates, which include sugars, amino acids, and organic acids, are released into the rhizosphere and influence nutrient availability in several ways.

Root Exudates and Microbial Interactions

Root exudates feed soil microbes, which, in turn, play a vital role in nutrient cycling. For example, bacteria in the rhizosphere can convert organic forms of nitrogen into plant-available forms like ammonium and nitrate. Similarly, mycorrhizal fungi form symbiotic relationships with plant roots, extending their hyphae into the soil to access nutrients like phosphorus that would otherwise be out of reach.

Chelation and Nutrient Solubility

Certain root exudates, particularly organic acids, can chelate (bind) metal ions like zinc, iron, manganese, and copper, making them more soluble and available for plant uptake. This process is especially important in soils with high pH, where these micronutrients may be present but not in a form that plants can easily absorb. Chelation improves the bioavailability of these essential nutrients, promoting healthier plant growth and development.

pH Modification in the Rhizosphere

Plants can actively modify the pH of their rhizosphere by releasing hydrogen ions (H+) or bicarbonates (HCO3-), depending on the nutrient needs and soil conditions. For example, in response to low phosphorus availability, plant roots may release organic acids that lower the rhizosphere pH, increasing the solubility of phosphorus and making it easier for plants to absorb. By understanding how plants interact with their rhizosphere, farmers can tailor their fertilisation practices to ensure that nutrients are available in the right form and at the right time.

Precision Fertilisation: Maximising Efficiency and Minimising Waste

Precision fertilisation is a key component of modern farming practices that aims to apply the right amount of nutrients at the right time and place. By understanding the mechanisms of nutrient uptake and the role of the rhizosphere, farmers can make informed decisions about fertiliser application, ensuring that nutrients are used efficiently and sustainably.

For example, nutrients that rely on diffusion, such as phosphorus and potassium, are most effective when placed near the root zone at planting. In contrast, nutrients that are mobile in the soil, like nitrogen and sulphur, can be broadcast or applied through fertigation. Tailoring fertilisation strategies to the specific needs of the crop and soil conditions not only improves nutrient use efficiency but also reduces the risk of nutrient runoff and environmental pollution.

Conclusion: Enhancing Crop Performance Through Soil-Plant Interaction

Optimising soil and plant interaction is key to improving agricultural productivity and sustainability. By understanding the complex processes that govern nutrient uptake, farmers can implement more effective soil management and fertilisation practices. This knowledge allows for better utilisation of resources, reducing input costs while increasing crop yields. Kynoch Fertilizer’s range of enhanced-efficiency fertilisers, along with expert agronomic advice, can help farmers optimise their fertilisation programmes for long-term success.

For personalised advice on improving nutrient management and soil health, contact Kynoch Fertilizer’s experienced agriculturalists on 011 317 2000 or info@kynoch.co.za

Compiled by: Hentie Cilliers or Chris Schmidt from Kynoch Fertilizer

—

References

• Barber, S.A. (1995). Soil Nutrient Bioavailability: A Mechanistic Approach. 2nd edition. John Wiley & Sons.
• Marschner, H. (1995). Mineral Nutrition of Higher Plants (2nd edition). Academic Press, San Diego.
• McKenzie, B.M., Mullins, C.E., Tisdall, J.M., Bengough, A.G. (2012). Root-soil friction: Quantification provides evidence for measurable benefits for manipulation of root-tip traits. Plant Cell Environ, 36, 1085-1092.
• Mengel, K. (1995). Roots, Growth and Nutrient Uptake. Department of Agronomy publication # AGRY-95-08 (Rev. May-95). Purdue University, USA. Link. Accessed on 27 August 2024.

The post Unlocking Soil-Plant Interaction: Boost Crop Growth with Enhanced Fertilisation Strategies first appeared on Kynoch Fertilizer.

Regular soil testing is crucial for monitoring the status of the soil solution.

When discussing crop nutrition, the focus is often on soil nutrient levels. However, many processes and interactions occur in the soil solution, which is a dynamic mixture of water, dissolved nutrients, minerals and organic compounds present in the soil’s pore spaces.

The soil solution plays a crucial role in delivering nutrients to plant roots, supporting biochemical processes and facilitating the uptake of essential elements. Key factors affecting the soil solution include:

SOIL PH

The soil pH influences nutrient availability and mineral solubility. Outside the optimal range, certain nutrients become less soluble while others may become toxic. Acidic soils reduce the availability of nutrients like phosphorus, calcium and magnesium while increasing the solubility of toxic metals like aluminium and manganese. Alkaline soils limit the availability of essential micronutrients like iron, zinc, and manganese.

SOIL TEXTURE

The proportion of sand, silt and clay particles affects water and nutrient retention. Sandy soils have larger particles and fewer binding sites, which leads to poor nutrient retention and a higher risk of nutrient leaching.

Clay soils have fine particles and high nutrient-holding capacity but can sometimes retain nutrients too tightly, limiting their availability.

CATION EXCHANGE CAPACITY

Cation exchange capacity (CEC) is a measure of a soil’s ability to hold and exchange positively charged ions (cations) like potassium, calcium and magnesium. Soils with a higher CEC (typically clay or those rich in organic matter) can hold more nutrients, making them available to plants over time. Low-CEC soils (usually sandy soils) have a lower nutrient-holding capacity, leading to more frequent nutrient deficiencies.

SOIL STRUCTURE

Well-structured soil has better aeration and allows for easier root penetration, facilitating nutrient access. Compacted soil, on the other hand, can restrict root expansion and reduce nutrient uptake.

ORGANIC MATTER

Organic matter, including compost and decomposed plant material, enriches the soil solution by increasing nutrient availability and improving soil structure.

As organic matter decomposes, it releases nutrients into the soil solution and enhances the soil’s ability to retain water and nutrients, which benefits plant roots.

SOIL MOISTURE

Water is the medium through which nutrients are dissolved and transported to plant roots. Excess moisture can cause the leaching of nutrients, especially nitrogen. Lack of moisture reduces the solubility and movement of nutrients, limiting plant uptake.

SOIL MICROBIAL ACTIVITY

Micro-organisms in the soil play a crucial role in nutrient cycling. They break down organic matter, fix atmospheric nitrogen, and solubilise phosphorus and other nutrients, making them available to plants. Healthy soils with active microbial communities promote faster nutrient cycling and greater nutrient availability in the soil solution.

SOIL COMPACTION

Compacted soil has reduced pore spaces, limiting water infiltration, air movement, and root penetration. This can impede the movement of nutrients in the soil solution and restrict the plants’ access to them.

TEMPERATURE

Warmer temperatures generally increase microbial activity, speeding up nutrient cycling and availability. Cold soil slows down microbial processes and reduces nutrient availability, especially nitrogen mineralisation.

NUTRIENT INTERACTIONS

Fertilisation aspects – such as frequency of application, nutrient concentration, chemical form, and nutrient solubility – need to be considered. Enhancing the soil solution can significantly improve nutrient availability, ensuring plants have access to the essential elements they need for optimal growth and productivity.

Email info@kynoch.co.za, phone

011 317 2000, or visit kynoch.co.za

Kynoch – Enhanced efficiency through innovation

The post Enhancing your soil solution first appeared on Kynoch Fertilizer.

Take note that reference is often made regarding soil acidity, without specifying the relevant pool of acidity that is being referred to. Obviously, every pool would require different quantities of calcium carbonate and/or magnesium carbonate to neutralize the acidity. That brings it to the question of what the term soil acidity, really entails? Does it refer to acidity from the plants’ perspective, the soils’ perspective, or both, and also which pools of acidity?

Types of soil acidity

Beginning with soil-pH, individuals tend to speak of soil acidity and liming with a pH-value in mind, not realising that different pools of acidity exist. The pool of acidity reflected by measuring the soil-pH, is called, active acidity, an expression of the concentration of H⁺-ions in the soil solution (Schroeder, 1984). The H⁺-ions as such is not the toxic element towards plant roots, associated with typical visual Mg-deficiency symptoms.  However, a low soil-pH causes increased or decreased solubility of cations, resulting in indirect negative plant reactions.  Also, at a high soil-pH, complexation of nutrients also happens, except for molybdenum.  The impact of soil-pH unto solubility and availability of nutrients in the soil was already illustrated in a diagram by Truog during 1943 (Bedassa, 2020). Solubilized aluminium ions (Al³⁺) are toxic towards plants and suppressing magnesium uptake (Mg²⁺), unfortunately not reflected directly in the soil-pH measurement. Although soil-pH is a useful index commonly measured when testing soil, it is often misunderstood and misused (WPHA, 2002).

Total acidity in acid soils is defined as consisting of two components, as indicated below:

Total acidity =            exchangeable acidity + residual acidity

Total acidity can be determined by the titration of a soil suspension in a salt solution to a reference pH using a strong base or addition of increments of lime.  However, a standard method for the determination of total acidity is to react a soil for several hours or overnight with a solution containing 0.5M BaCl₂ (0.5 moles barium chloride solution), plus a triethanolamine (TEA) buffer adjusted to pH 8.0 or 8.2. Triethanolamine is well buffered at pH 8. The Ba²⁺ is included to displace acidity from soil components. A reference pH of 8.0 or 8.2 was chosen to represent the pH attained when a soil is limed with excess lime; also, the Al³⁺ acidity bound to clays is neutralized (Bloom, 2000).

Exchangeable acidity is the hydrogen (H⁺) and Al⁺ extractable with IM KCI (1 mole potassium chloride salt extractable acidity; Bloom, 2000), in other words, the titratable hydrogen (“and Aluminium”[1]) that can be replaced from the absorption complex by a neutral salt (Van der Watt & Van Rooyen, 1995). In order to interpret the impact of meaning of an exchangeable acidity value expressed in centimol per kilogram of soil (cmol_ckg^-1) as a percentage of acidity, acid saturation need to be calculated.  The following formula is used:

Acid saturation (%) = ((100 x (extractable acidity)) / T-value), where

Extractable acidity is the sum of salt extractable H⁺ and Al³⁺ cations expressed in cmol_ckg^-1 and the T-value of the soil, also in the same unit of measurement (FERTASA, 2016).

Residual acidity is the acidity titrate-able, but not easily exchangeable acidity (non-extractable). Residual acidity is determined by the difference between the total acidity neutralized by raising the pH to a reference level (7.0 or 8.0) and the salt extractable acidity (Bloom, 2000).

Buffer Capacities of soils

Because of the differences in buffer capacity of soils, those of similar pH may require vastly different quantities of lime to yield the same increase in pH (Bloom, 2000). Any decent agricultural lime proposal should keep the buffer capacity of soil in mind.  This suggest that on weak buffered soils (mostly sandy soils), liming could more easily done according to pH, while liming on highly buffered soils (mostly clayish soils) should rather be based on acid saturation.

Soil buffer capacity, influenced by soil texture, organic matter, and mineral composition, determines the soil’s ability to resist pH changes. Liming, the application of calcium and magnesium carbonates, can help neutralize soil acidity and improve fertility. However, the effectiveness of liming depends on the soil’s buffer capacity, with highly buffered soils requiring more lime to achieve the same pH increase.

Conclusion

Accurate interpretation of soil acidity requires understanding the critical definitions of active, exchangeable, and residual acidity. By recognizing the significance of each type and their interrelationships, farmers and soil managers can develop effective strategies to manage soil acidity, optimize soil fertility, and promote healthy plant growth.

References

Bedassa M (2020) Soil acid Management using Biochar: Review. Int J Agric Sc Food Technol 6(2): 211-217. OI: https://dx.doi.org/10.17352/2455-815X.000076 referring to Emil Troug (1943) USDA Year book of Agriculture. 42

Bloom, P.R., 2000.  Soil pH and pH buffering. In: M.E. Sumner (ed.). Handbook of soil science. CRC Press.

FERTASA, 2016. Bemestingshandleiding. Agste hersiene uitgawe. Fertilizer Association of Southern Africa. Pretoria.

Schroeder, D., 1984. Soils – Facts and concepts. International Potash Institute, Bern, Switzerland.

Van Der Watt, H.v.H. & Van Rooyen, T.H., 1995.  A Glossary of Soi8l Science.  The Soil Science Society of South Africa, Pretoria.

WPHA, 2002. Western Fertilizer Handbook. 9^th edition. Western Plant Health Association.

Compiled by Chris Schmidt, Senior Agriculturalist Kynoch Fertilizer. Contact us on 011 317 2000.

The post Acidity related definitions critical for interpretation first appeared on Kynoch Fertilizer.

Most school biology students will know the importance of nitrogen (N), phosphorus (P), and potassium (K) for healthy plant growth. However, a more in-depth study reveals that these are just three of many elements playing an essential role in overall plant welfare. Whilst these constitute the main requirement, relatively large quantities of calcium, magnesium, and sulphur are equally necessary. Although plants only need minute traces of micronutrients, these are no less crucial to ensure growing crops thrive.

The seven essential micronutrients for plant growth are:

– Boron (B) – essential for cell wall development and sugar metabolism
– Chlorine (Cl) – important for photosynthesis and water balance
– Copper (Cu) – crucial for enzyme activity and chlorophyll production
– Iron (Fe) – vital for photosynthesis, respiration, and nitrogen fixation
– Manganese (Mn) – necessary for enzyme activity and plant defence
– Molybdenum (Mo) – essential for nitrogen fixation and plant growth
– Zinc (Zn) – important for plant growth regulation and protein synthesis

Even the nutrients in well-fertilised soil can become severely depleted by the end of the growing season. At the same time, some ground may display various mineral deficiencies even before cultivation. In the past, a farmer would have dug in a mix of farmyard manure and vegetable compost and hoped for the best. Whilst this is a long-standing traditional approach, it fails to produce the high yields necessary today. Instead, modern intensive farming relies on precisely formulated mixtures of primary, secondary, and essential micronutrients.

A fertiliser with an appropriate NPK ratio is a fundamental requirement for all plants. However, it can be dangerous to overlook the need for traces of boron, chlorides, copper, manganese, molybdenum, iron, and zinc. For example, copper plays a crucial role in enzyme and chlorophyll activity and promotes seed formation. Iron acts as an activator for photosynthesis, respiration, and nitrogen fixation and is required for chlorophyll production. Factors such as excessive damp, cold, high pH, and heavy rainfall can quickly deplete the small traces of these and other natural micronutrients in the soil.

How to Know Which Elements Need to be Supplemented

Common deficiency symptoms include:

– Yellowing leaves (nitrogen) – conduct a soil analysis to confirm nitrogen deficiency
– Stunted growth (phosphorus) – soil analysis can reveal phosphorus levels and other contributing factors
– Distorted leaves (copper) – accurate soil analysis is crucial to determine copper and other micronutrient concentrations

To determine which elements need supplementation, conduct a soil analysis with Kynoch Fertilizer’s expert testing services. Kynoch Fertilizer offers:

– Soil analysis to measure nutrient levels and identify deficiencies
– Leaf analysis to assess plant nutrient uptake and utilisation
– NVDI (Normalised Difference Vegetation Index) precision services using KynoPrecise software for advanced crop monitoring and management

With accurate test results, Kynoch Fertilizer can create a tailored fertiliser blend to restore the nutrient balance. Kynoch also offers personalised solutions and a range of granular and liquid fertilisers containing selected micronutrients in various proportions.

In addition to providing personalised solutions, Kynoch Fertilizer offers a wide range of granular and liquid fertilisers containing selected micronutrients in various proportions. You are welcome to click here for more details about these and other world-class Kynoch Fertilizer products.

The post Ensure Your Plants Have Enough Essential Micronutrients first appeared on Kynoch Fertilizer.

 One need only look at the high incidence of scurvy, rickets, beriberi and pellagra in the world’s poorest countries to spot the connection between dietary deficiencies and these heart-rending manifestations of human malnutrition. Similarly, a field of wilting and discoloured maize clearly indicates that something essential is missing from the soil. Studies have shown conclusively that numerous elements are crucial for plant nutrition. Consequently, shortfalls can lead to growth anomalies, increased vulnerability to disease, pests and drought, and low yields.

Extreme weather conditions, erosion and pH changes can leave soil lacking nutrients. Animal manure and vegetable compost are rich sources of nutrients and can help overcome such deficiencies in the growing area. However, their composition is random, inconsistent and unknown. These natural solutions can be helpful. But, their overall benefits are no match for those of the precisely formulated granular and liquid commercial fertilizers designed to optimise plant nutrition.

In South Africa, where agricultural productivity is crucial for food security and economic growth, understanding plant nutrition is vital. The country’s diverse soil types, climate, and crop varieties require tailored fertiliser solutions to optimise yields.

In South Africa, where agricultural productivity is crucial for food security and economic growth, understanding plant nutrition is vital. The country’s diverse soil types, climate, and crop varieties require tailored fertiliser solutions to optimise yields.

Fulfilling the Complex Nutritional Requirements of Plants

Although maize, cabbages and potatoes might appear to be relatively simple lifeforms, their physiology is complex. They all depend on access to air, water and selected minerals in their immediate environment. Atmospheric carbon dioxide is plentiful, and irrigation systems can compensate for water shortages during periods of limited rainfall. However, fertilisers remain the only effective way to ensure the required balance of the many essential elements in the soil. Furthermore, a plant’s needs vary at different stages in its lifecycle. For example, phosphorus is crucial to plant nutrition to promote the rapid root growth essential for establishing seedlings. Later it is necessary to aid flowering while also helping to withstand harsh weather and environmental stress.

While phosphorus is the main ingredient of suitable starter fertiliser, additional elements are essential to meet the seedlings’ immediate needs. Naturally, they require nitrogen and potassium. However, magnesium and sulphur and traces of the micronutrients zinc, copper, boron and molybdenum are also necessary at this stage. Chelation can help to ensure that zinc and copper are readily available for plant nutrition.

In South Africa, maize, sugarcane, and soya beans are among the most widely cultivated crops. Each has unique nutritional requirements, making it essential to choose the right fertiliser blend. For example, maize requires adequate nitrogen, phosphorus, and potassium, whilst sugarcane benefits from added micronutrients like zinc and copper.

Offering Crops a Healthy and Balanced Diet

Other mixtures with different elements in various concentrations may be necessary as the growing crop’s needs vary. Thus the best option for farmers is to follow a fertiliser application programme that best suits a given crop. When planting in previously uncultivated or well-used ground, it might pay to conduct a preliminary soil analysis. The results will indicate which elements may most need replenishing to create the ideal balance. Like humans, crops also require a balanced diet to remain healthy.

Kynoch offers farm visits, in-depth soil analysis and a wide range of fertilisers to cover every aspect of plant nutrition. We invite you to download the profile sheets for these leading products that may interest you.

In South Africa’s varied climate, soil analysis is crucial to determine nutrient deficiencies. Kynoch’s expert soil analysis services help farmers identify areas for improvement, ensuring optimal fertiliser application. Additionally, Kynoch’s range of fertilisers is designed to address specific regional needs, such as:

– High-phosphorus fertilisers for maize in acidic soils
– Zinc-enriched fertilisers for sugarcane in coastal regions
– Balanced NPK fertilisers for soya beans in dryland areas

By understanding the complex nutritional requirements of crops and addressing regional soil challenges, South African farmers can optimise yields, improve crop quality, and contribute to the country’s agricultural prosperity.

Kynoch – Enhanced efficiency through innovation

The post Adequate Plant Nutrition is Cruicial For Healthy Growth first appeared on Kynoch Fertilizer.

All green plants obtain the nutrients they need to grow and reproduce from the soil and the surrounding air. The process of photosynthesis occurs in the leaves, utilising atmospheric carbon dioxide and water drawn by the root system to produce the energy-rich carbohydrate essential for many metabolic processes. However, this crucial activity could not proceed without the elements required to synthesise chlorophyll. To ensure they are available in sufficient quantities, it is frequently necessary to introduce a fertiliser into the soil.

Types of Essential Plant Nutrients

Essential plant nutrients can be classified into three types according to the quantities required. The greatest need for all plants is for the three primary or macro-nutrients, nitrogen, phosphorus and potassium. Next in importance are the secondary nutrients, calcium, magnesium and sulphur. While plants need less of these, the requirement is still relatively high compared to the trace quantities of additional elements, equally essential for plant welfare. Though comprising less than 1% of a plant’s dry weight, boron, zinc, manganese, iron, copper, molybdenum, and chlorine are equally essential. There are two primary choices when applying fertiliser to replenish soil nutrients, although it’s convenient to subdivide the second.

The Main Fertiliser Options

Chemical or inorganic products are manufactured products that provide an alternative to naturally occurring elements. Next are the organic mixtures consisting purely of natural ingredients. However, some manufacturers prepare these mixtures by extracting the essential nutrients entirely from natural sources, hence the need for a third category – purely organic, heterogeneous mixes, such as animal manure and compost. However, although fans of organic foods prize the latter, they are unsuitable for intensive farming. A manufactured inorganic or organic fertiliser offers the advantage of having a known and predetermined composition.

Precision in Composition is Key

In practical terms, access to products of known composition enables growers to create the perfect balance of essential nutrients for a given species based on a preliminary analysis of their unique soil conditions. This degree of precision ensures healthy crops and high yields that are not achievable when using manure and compost.

However, a plant’s nutritional requirements can vary markedly at different stages in its development. What may be helpful to seedlings and root growth may be of little value for foliar development or flowering. Consequently, choosing a fertiliser with the precise composition required during these stages can be crucial. Understanding these changing needs and how to satisfy them requires in-depth knowledge of plant physiology that even experienced farmers sometimes lack.

Sustainable Fertiliser Practices

In addition to choosing the right type of fertiliser, it’s essential to consider sustainable practices to minimise environmental impact. This includes using fertilisers in the right quantities, choosing products with minimal packaging and waste, considering organic or natural fertiliser options, and rotating crops to maintain soil health and reduce fertiliser dependence.

Common Mistakes to Avoid

When selecting and applying fertilisers, it’s crucial to avoid common mistakes that can harm crops and the environment. These include over-fertilising, under-fertilising, applying fertilisers at the wrong time or in the wrong conditions, and not considering soil pH and its impact on fertiliser effectiveness.

Integrating Fertiliser Use with Other Agricultural Practices

Fertiliser use should be integrated with other agricultural practices to achieve optimal results. This includes irrigation management, pest management, crop rotation, and soil conservation practices.

Kynoch offers the option of farm visits to perform a comprehensive professional soil analysis and compile a unique nutritional programme designed to generate maximum yields based on the results. Please click here to learn more about farm visits or here to view our world-class fertiliser range.

The post The Different Types Of Fertiliser first appeared on Kynoch Fertilizer.

The two main nutrients that support excellent root growth in plants are phosphorous and potassium. These two ingredients are extremely helpful in any fertiliser mix that needs to encourage a thick, healthy collection of brand-new roots, or to strengthen and stimulate existing systems. These fertiliser mixes are perfect for the plant’s active growing season, and as a bonus, if you’re looking for a beautifully colourful garden, phosphorus will also stimulate fruit and flower production.

The N-P-K Rule of the Green Finger

Most store-bought fertilisers will have an N-P-K ratio displayed on the bag. This ratio will indicate the percentages of nitrogen (N), phosphorous (P), and potassium (K) within the mixture respectively. If you’re looking for a mixture that stimulates root growth, ensure that the first number is always significantly lower than the following two. For example, 3-20-20 indicates three per cent nitrogen, twenty per cent phosphorous, and twenty per cent potassium. Nitrogen promotes green leggy growth at the expense of flowering, fruiting and strong, healthy root growth.

For the Green, Green Fingers

Organic gardens enjoy natural sources of phosphorous and potassium. A good-grade organic mixture containing the two ingredients will consistently release them into the soil at a slow pace. Because they release nutrients more moderately, they are considered to be slow-release fertilisers that will continuously stimulate root growth. Mixtures of rock phosphate and bone meal are good for phosphate content while kelp or wood ashes are really good sources of potassium. Some of these mixtures may also contain small amounts of magnesium and iron which are also good for your plants.

The Importance of Mycorrhizal Fungi in Root Growth and Nutrient Uptake

Mycorrhizal fungi form symbiotic relationships with plant roots, enhancing nutrient uptake and root growth. These fungi increase the surface area of roots, allowing for greater absorption of nutrients and water. In return, plants provide fungi with carbohydrates produced during photosynthesis.

Tips from the Great Green Fingers

To stimulate root growth early but delay fruiting and flowering, dig your phosphorous and potassium mixtures into the soil roughly six inches deep, mixing the fertiliser with the soil thoroughly. Do this before the plants or seedlings are planted. For improved results, sufficient sun needs to be made available to the plants by their botanical species and plenty of water needs to follow.

The Role of Cover Crops in Promoting Root Growth and Soil Health

Cover crops promote root growth and soil health by adding organic matter, reducing erosion, and providing habitat for beneficial microorganisms. Legume cover crops, such as clover or beans, fix nitrogen, benefiting subsequent crops.

Once the plant begins to grow, you can then apply the nutrients to the plant with a liquid fertiliser. This will then stimulate flowering and fruiting at a later stage while still encouraging root growth.

Strategies for Optimising Root Growth in Challenging Soil Conditions

In challenging soil conditions, such as saline, acidic, or alkaline soils, root growth can be optimised through:

– Selecting tolerant crop varieties
– Applying amendments to adjust soil pH or reduce salinity
– Using precision irrigation to manage water stress
– Incorporating organic matter to improve soil structure

How Soil Structure and Compaction Affect Root Growth

Soil structure and compaction significantly impact root growth. Well-structured soils with adequate pore space allow roots to grow freely, while compacted soils restrict root development. Compaction can be managed through reduced tillage, cover cropping, and incorporating organic matter.

The Green Finger’s Choice

It’s not what you use, it’s who makes what you use. When it comes to successfully cultivated root growth, Kynoch has to be your choice. Kynoch is an acknowledged leader in innovative plant nutrition, bringing new technologies to the field of botany and horticulture. We strive to complement our clients’ businesses through the use of Yield Enhancing Technologies and future innovation. If we don’t have what you need, we’ll mix it for you. Whether farm, field, or flower bed, Kynoch will get it growing.

The Impact of Climate Change on Root Growth and Agricultural Productivity

Climate change affects root growth and agricultural productivity through altered temperature and precipitation patterns, increased frequency of extreme weather events, and rising CO2 levels. Understanding these impacts is crucial for developing adaptive strategies.

The Use of Precision Agriculture Techniques to Monitor and Manage Root Growth

Precision agriculture techniques, such as soil sensors and imaging technologies, enable monitoring of root growth and soil conditions. This information can be used to optimize irrigation, fertilisation, and other management practices.

The Potential of Genetic Engineering to Enhance Root Growth and Nutrient Uptake in Crops

Genetic engineering offers potential for enhancing root growth and nutrient uptake in crops. Researchers are exploring genes that promote root development, nutrient efficiency, and drought tolerance.

The post Root Growth: What Can You Use to Promote Root Growth? first appeared on Kynoch Fertilizer.

In much the same way as a growing child’s dietary needs change, a plant’s nutritional requirements vary during the different stages of its development. When the conditions for germination are right, there are sufficient quantities of the necessary nutrients within a seed to sustain growth until the young plant develops its first true leaves. From that point forward, however, the new seedling must rely solely on the soil as the source of its essential nutrients. Treatment with a suitable starter fertiliser will often be advantageous in promoting healthy seedling growth. These products can benefit species ranging from lawn grasses and flowers to maize and other cash crops.

These nutritious mixtures can be particularly beneficial when planting a crop in cold, wet soils when the seedlings are most vulnerable. A relatively light application of an appropriate mix of nutrients will provide them with an easily accessible food source. Later, when their root system is sufficiently well developed, the young plants can begin to extract their requirements from the soil.

The Components of a Starter Fertiliser

The critical components of an effective starter fertiliser are nitrogen and phosphorus, as these are necessary to promote healthy root growth. However, seedlings cannot easily extract phosphate from the soil until the roots are fully developed. Hence, it is required to provide phosphorus in a more accessible form. Although potassium is also recognised as one of the three essential plant macronutrients, only minimal amounts are necessary for the developing seedlings at this stage.

Nevertheless, a preliminary soil analysis can alert the grower to any significant findings that might need consideration. For example, soils high in phosphorus may only require a starter fertiliser with a readily available nitrogen source such as ammonium sulphate or ammonium nitrate. The effect of applying the product will be to increase a crop’s early seasonal growth rate. However, this does not necessarily lead to increased yield. In practice, additional alternative treatments will generally be necessary for this purpose.

Because the seedlings’ initial requirements are comparatively limited, even a relatively light application can produce some impressive results. Although your soil analysis might indicate the concentrations of the existing nutrients vary widely in parts, a uniform application of the starter fertilizer across the proposed planting area should prove adequate.

Kynoch Takes Care of Newly Planted Seedlings

Kynoch has been a leader in yield-enhancing technology for more than a century. We promote the application of selected growth enhancers through a programme of scheduled nutrition. To meet the needs of newly planted seedlings, we have developed KynoPop®, a highly water-soluble, well-formulated mix of macro-, secondary and micro-nutrients. The product enhances early root development and increases tolerance to pests and diseases. Download the profile sheet to learn more about this world-class starter fertiliser.

The post Purpose Of Starter Fertilizer first appeared on Kynoch Fertilizer.

Following centuries of practical farming and agricultural research, we have amassed a wealth of knowledge regarding the nutritional requirements for sustainable, healthy plant growth. For example, we are now aware of the many advantages of applying commercial fertilizers with a well-balanced nutrient content rather than depending on the random composition of compost and animal manure. However, we sometimes forget that soil composition is frequently just as inconsistent. In practice, an accurate soil analysis should be the starting point when attempting to optimise plant nutrition.

What Your Plant Needs

The requirements for photosynthesis extend far beyond water, carbon dioxide and sunlight. For example, green plants require nitrogen and magnesium to synthesise chlorophyll. These crucial nutrients can become exhausted by a crop or leached away by heavy rainfall. Consequently, these elements will need to be replaced before the next planting. But how much of each will be required? Too much nitrogen can cause iron deficiency characterised by a yellowing of the leaves. It can also leave plants more susceptible to fungal and bacterial diseases. Performing a soil analysis before you select your fertilizer will eliminate these and other adverse effects due to nutrient deficiency or excess.

How a Soil Analysis is Conducted

The first step in this two-step process is sampling. The sample you submit for testing is small compared with the area of your field, so it needs to be as representative as possible. In practice, you need to collect multiple samples from randomly-chosen locations. You will then need to air-dry them for two or three days or keep them refrigerated before delivering them to the laboratory. Once there, a technician will perform the necessary tests. Those conducted during a soil analysis may vary between labs but typically include texture, electrical conductivity as a measure of salinity, pH plus nitrogen, phosphorus and potassium concentration. In addition, calcium, magnesium, sodium and sulphur levels are customarily measured. Secondary studies such as the cation exchange capacity of the metallic elements can indicate the soil’s ability to retain nutrients. Armed with the details of your soil’s composition, you can now determine the necessary steps to create a balanced nutrient environment suitable for your proposed crop.

Despite its undeniable value, conducting a soil analysis is a time-consuming and exacting process. Furthermore, interpreting the results to compile a suitably balanced fertilizer requires an in-depth knowledge of plant nutrition. Consequently, many busy farmers prefer to outsource the entire process to an expert.

Kynoch is a leader in the field of plant nutrition management. We can compile a customised programme to cover each phase of plant growth and the related nutrient requirements ensuring healthy crops and maximum yields. Please click here to learn more about our farm visits and comprehensive soil analysis service.

The post Soil Analysis Role in Plant Nutrition Management first appeared on Kynoch Fertilizer.