Evaluation of potassium requirements of small grains in Bulgaria
1995
Nikolova, M. (N. Poushkarov Institute of Soil Science and Agroecology, Sofia (Bulgaria))
Potassium fertilisation should find its level in small grain production. The shortage of potassium fertilisers on the domestic market is connected to decreases in annual grain production as well as having a damaging influence on soil fertility because of the failure of soil potassium reserves
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