The effect of zeolite, organic and inorganic fertilizers on soil chemical properties, growth and biomass yield of apple trees

Abstract

The objective of this study was to evaluate the influence of organic (cattle manure) and inorganic fertilizers [composite NPK (15:15:15)] and natural zeolites on soil properties, vegetative growth and yield of apple plants grown on vertisol under Cacak conditions (Western Serbia). The results showed that the combined fertilization induced a decrease in acidity, an increase in humus content, a partial increase in total nitrogen (N-TOT), and, primarily, a rise in available phosphorus (P) and potassium (K) levels. A highly significant (P LT 0.01) interactive effect of the apple cultivars and nutrients on one-year-old shoot length and trunk cross-sectional area (TCSA) and a significant effect (P LT 0.05) on yield per tree and yield per hectare were determined.