Bulk of Adama red onion variety is highly produced in Rift valley areas of Ethiopia (Alage is found in this area), but the productivity is declining due to continuous cultivation, high soil pH and other factors, in order to improve the productivity of the crop, applying organic (farm yard manure) and inorganic (nitrogen and phosphorus) fertilizers in the research area shows a promising result in improving the yield of the crop as well as physical and chemical properties of the soil. Это и многое другое вы найдете в книге RESPONSE OF Allium cepa TO the APPLICATION OF FYM,N and P FERTILIZERS (Melaku Fisseha Teferi)
RESPONSE OF Allium cepa TO the APPLICATION OF FYM,N and P FERTILIZERS Melaku Fisseha Teferi (книга)
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