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. 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|
|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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