Effects of fertigation using nitrogen and complete fertilizers on chemical soil properties, growth and yielding of apple trees
2003
Treder, W.
The changes in pH level, potassium, calcium and magnesium content were noticed in soil under dripper, where nutrient solution was applied. Application of nutrients as a form of fertigation with complete fertilizer decreased pH in the soil zone, just under drippers whereas traditional, surface nutrient application, followed by irrigation with alkaline water without fertilizers resulted in increase of soil pH. The presence of calcium and magnesium ions, naturally occurred in irrigation water, resulted in higher accumulation of these elements in soil under drippers. Drip irrigation decreased potassium in soil under the emitter, irrespectively of type of fertilizer application. The nutrient content in leaves and fruits was influenced mainly by meteorological conditions, age of trees and plant yield. Fertigation increase phosphorus content in leaves, in both apple varieties
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