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  • Crop Nutrition

    Using the right fertiliser is fundamental to crop quality and yield, and Glasson Fertilizers can help you through every step of the process.

    We offer a full soil analysis service for all crops, ranging from a basic assessment to broad spectrum and animal health tests. From soil analysis results our FACTS qualified advisers can help you create a bespoke fertiliser plan to suit your requirements. For more details about our soil analysis services please call 01524 753600, or email us at fertilizers@glassongrain.co.uk

    Nitrogen (N)

    Nitrogen is the chief growth agent for plants, and it is fundamental to crop yield. Plants utilise Nitrogen as a major component of chlorophyll and amino acids, the building blocks of protein. The presence of sufficient Nitrogen is shown by a healthy green colour in the crop. Nitrogen deficiency will affect the whole plant, and can lead to stunted growth, reduced tillering in crops, and a severe reduction in yield. However, it is important to apply the correct amount of Nitrogen for a given crop, as over-application can not only significantly increase input costs, but also have a detrimental effect on the plant in the form of reduced resistance to disease and delayed maturation. Increased growth of stem and leaf increases the demand for Potassium, so the balance on N to K is important.

    Nitrogen recommendations can be found in the RB209 Fertiliser Manual, or through one of our FACTS qualified advisors’.

    Phosphate (P)

    Phosphate is an essential and irreplaceable nutrient in crop nutrition, and is fundamental to root and cell development, and plant establishment. Furthermore, Phosphate is important to the plant in the later growth stages at flowering, fruiting or maturation. Phosphate deficiency will stunt growth, resulting in smaller plants, and can increase risk of disease. Deficiency can be identified by plants turning red or purple, starting on the old leaves and then moving on to the younger growth. Phosphate is relatively immobile in soil and therefore it does not need to be over-applied. Glasson Fertilizers soil analysis service can tell you the levels of available Phosphate in your soil, and our FACTS qualified advisors’ can recommend what needs to be applied in the form of fertilizer.

    Potassium (K)

    Potassium is important as a water regulator to plants, and it is important in the uptake of N by plants. It can also increase resistance to pests, disease and physioloical stress. Potassium deficiency will shorten plant internodes, and, in severe cases, burn along the edges of lower leaves. Potassium is very mobile in soil, and much of it is lost when a crop is harvested. Therefore, it is extremely important to replace what has been taken off. Our soil analysis service can tell you how much Potassium is available in your soil, and our FACTS qualified advisors’ can recommend what needs to be applied in the form of fertilizer.

    Sulphur (S)

    Sulphur is an essential plant nutrient, and deficiency is becoming increasing common in UK soils. Sulphur is fundamentally important to plants for amino acid and protein production, and essential for Nitrogen uptake. Due to the lower atmospheric deposition of Sulphur – as a direct result of cleaner air and reductions in pollution – applying the correct amount in the form of fertiliser is more important to crop yield and quality than ever. Our FACTS qualified advisors’ can create tailored recommendations for all crop varieties.

    Calcium (Ca)

    Calcium is utilised in the plant for continuous cell division and formation, it controls uptake of water by cell colloids, and it is involved in Nitrogen metabolism. Calcium has an indirect affect on the growth of the plant by altering the availability of certain nutrients, and preventing the toxic effect of others. High levels of Potassium, Magnesium, Sulphur and Boron can affect Calcium uptake, causing an imbalance, which can result in abnormal performance of plant function. Glasson Fertilizer’s basic soil analysis test identifies plant-available Calcium in the soil.

    Magnesium (Mg)

    Magnesium is a key element in chlorophyll production, and it can also improve the utilisation and mobility of Phosphorus in the soil. Magnesium influences the speed and uniformity of plant maturity, and it is a component of many plant enzymes. Deficiency symptoms of Magnesium are shown in yellowing between the veins, mainly in the older leaves of plants, and large leafed crops can develop a marbled appearance. High levels of Calcium or Potassium in the soil can contribute to Magnesium deficiency, and Glasson Fertilizer’s basic soil analysis service provides the levels of plant-available nutrient for all three.

    Minor Nutrients

    Boron is important to the plant for protein synthesis, the formation of plant hormones, and water retention. It promotes maturity and increases flowers, fruits, yield and quality. Boron is immobile in the plant, and uptake can be affected by a high soil pH, high Potassium levels, low Phosphate levels, or low organic matter in soils. Zinc is an important growth hormone to the plant, and deficiency can affect the height of the plant, seed and grain formation, and maturation date. Zinc also has a major function in the process of photosynthesis.

    Copper is required by plants for chlorophyll production, and it increases the sugar content in plants, as well as improving the flavor in fruits and vegetables. High Aluminum, Zinc and Manganese levels can all decrease the availability of Copper. Manganese is an enzyme catalyst for the plant, and is also essential in the process of photosynthesis. High Calcium, Magnesium, Iron, and other ions compete in the growth medium, reducing Manganese uptake. Soils low in Sulphur can also reduce the availability of Manganese.

    Von Liebig’s Law of the Minimum

    In Von Liebig’s Law of the Minimum, the thirteen nutrients essential to plant growth are portrayed as the staves of a barrel, with the capacity of the barrel being limited to the length of the shortest stave. Likewise, plant growth is limited by the nutrient in the shortest supply, which must be supplemented to optimize growth.

    Von Liebig











    For more information or advice, please contact us today to speak to one of our FACTS qualified advisors’ on 01524 753600, or email us at fertilizers@glassongrain.co.uk