A - Papers appearing in refereed journals
Johnston, A. E. and Goulding, K. W. T. 1988. Rational potassium manuring for arable cropping systems. Journal of the Science of Food and Agriculture - jsfa. 46 (1), pp. 1-11.
|Authors||Johnston, A. E. and Goulding, K. W. T.|
Interest in potassium (K) manuring has decreased in recent years because applying K leads to no environmental problems, few soils are K deficient and K is cheaper than N. However, fresh K optimises yields, especiatly with high‐yielding crops and through its interaction with N, and K residues benefit crops in a way that often cannot be offset by fresh K. To achieve a rational basis for K manuring, the various sources of K and demands for K by the crop must be considered and used, together with soil and crop analyses, to predict K fertiliser requirements. K should be applied annually, perhaps as an NK compound, on light‐textured soils. On heavier soils it can be applied at any convenient point in a rotation, probably just before the most K‐sensitive crop is grown. Applications should match or slightly exceed crop requirements. There is little to gain from omitting K and every reason, both economic and agronomic, to include it. Such a rational policy will provide due reward in current crop yields and quality and in future soil productivity.
|Keywords||Agriculture, Multidisciplinary; Chemistry, Applied; Food Science & Technology|
|Year of Publication||1988|
|Journal||Journal of the Science of Food and Agriculture - jsfa|
|Journal citation||46 (1), pp. 1-11|
|Digital Object Identifier (DOI)||doi:10.1002/jsfa.2740460102|
|Open access||Published as non-open access|
|Funder project or code||16|
|Publication process dates|
|Copyright license||CC BY|
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