Soil-testing will help determine the status of available nutrients and develop fertiliser recommendations to achieve optimum crop-production. Efficient application of the correct types and amounts of fertilisers for the supply of the nutrients is an important part of achieving profitable yields. The numbers on the label refer to concentration (percentage) of three major nutrients: nitrogen (N), phosphate (P), and Potassium (K). For example, a 17-17-17 fertiliser contains 17 per cent nitrogen, 17 per cent phosphate and, 17 per cent potash. Different soils react differently with fertiliser application.

Source: Standard Digital February 11, 2017 12:22 UTC