Agricultural liquid fertilizers9/3/2023 ![]() The distribution of elements is also better with fertigation, without the need for heavy equipment in the field to apply the fertilizer. Micronutrient deficiencies revealed by OmniSap® analyses can be rectified with a top dressing. This enables the producer to apply the right amount at the right concentration at a specific time and crop growth stage. Liquid fertilizer can also be applied through the irrigation system. New product formulations, as well as unique formulations per area (such as when a certain area experiences a specific deficiency), is determined by trials and newly acquired knowledge. The distribution of the above-mentioned elements is homogenous, which further benefits the crop. Liquid fertilizer also affords the client the opportunity to add certain raw materials such as K-humate and specific trace elements to their blends. Omnia’s liquid products contain a wide range of micronutrients such as zinc, sulphur and boron that is taken up by the plant more readily than those applied in a granular fertilizer (Wallace and Meuller, 1978). Please note that an excessive amount of fertilizer was applied specifically to determine the leaching effect and therefore cannot be compared to normal application rates.įigure 2: Leaching trial in the Wesselsbron area (2017/2018 season) The results clearly indicate that the liquid fertilizer did indeed move deeper into the soil, while still remaining within the root zone. KCL (granular) and KCl (liquid) 200 mm under the soil surface. ![]() Soil samples were taken seven months later, after 421 mm rainfall, at 100 mm intervals.įigure 1: Example of fertilizer placement. Fertilizer in the form of nitrogen, phosphate and potassium was applied independently in liquid and granular form, at 200 mm beneath the soil surface. A leaching trial on sandy soils with an average clay percentage of 12% was conducted this year. Leaching is defined as the loss of water soluble plant nutrients from the soil profile due to an excess of water. Whether liquid fertilizer leaches more than granules, is one of the most common questions that Omnia agronomists are faced with. However, scientists (Gasser and Penny, 1967) showed that liquid fertilizer can mitigate these risks more effectively than granular fertilizer. Germination problems and damaged seed are huge risks with seed placement. ![]() ![]() Therefore, an even distribution of nutrients is one of the most important benefits when liquid fertilizer is compared to dry fertilizer mixtures. As with Omnia’s compound products, these also ensure even distribution of nutrients in every granule/drop. Fertilizer is still one of the farmer’s greatest direct expenses, and therefore the right type of fertilizer and correct application methods are critical.įor decades, Omnia Nutriology® has been the leader in liquid fertilizer technology. When the focus is on fertilization, the balance between cost effectiveness and convenience is of the utmost importance. The greatest motivator behind technology and advanced equipment in farming is to make it easier and more effective. The ever increasing need for more effective outputs with the lowest possible inputs is still an important challenge for the modern day farmer. ![]() The greatest motivator behind technology and advanced equipment in farming is to make it easier and more effective.īy Derick Wessels and Pieter de Wet, Omnia Agronomists: Free State Business Unit Liquids The benefits of liquid fertilizer ![]()
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