Many a times farmers ask the question, what amount of fertilizer should I put to get the maximum yield of maize, soya or wheat? This is a brilliant question that a business minded Farmer should ask because farming is a business with input and output. When output outweighs input then its profit and vice versa it’s a loss. Inputs are what we put into the soil and this includes fertilizer, seed, chemicals, water, labour and management. In this article we will start looking at fertiliser input and the question “How much fertiliser should one put per unit area at any given time to a particular crop to realise maximum crop yields?” Before answering this question lets remind farmers that each crop has a specific nutrient requirement hence forth a special fertilizer. With this in mind we have variety of fertilizers to address these requirements. Some examples of specific Fertiliser for some crops are indicated in the table below. We commonly talk about fertilizer in terms of Nitrogen, Phosphor
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