Soil test results When an index is given, fertiliser decisions can be made in confidence knowing that you will be supplying the correct nutrition that is needed. This fertiliser requirement would depend on the grassland situation/use. Tissue sampling Tissue sampling can be a useful indicator of nutrient deficiencies, both macronutrients and micronutrients at a particular growth stage in a crop of grass. These tests allow rectification of any deficiencies in both the current crop and any further crops of grass. Samples should be taken in a ‘W’ shaped pattern in the field at the first fully-expanded leaves from the growing point and should not be contaminated by roots or stems. Establishment P, K, or Mg Index 0 1 2 3 4 and higher Kg/ha Phosphate 120 80 50 30 0 Potassium 120 80 60(2-) 40(2+) 0 0 Magnesium 100 50 0 0 0
Correct nutrition is essential to get a crop of grass established well. Phosphate is particularly important as it helps with root development. Establishment fertiliser is best incorporated in the seedbed.
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