Early evaluation of use of fermented chicken manure products in practice of apple nutrient management

According to the Green Deal efforts, importance and relevance of organic fertilization will increase in near future. Therefore, investigation effects different fertilizers on soil productivity nutrient supply is a priority area agricultural research. Organic fertilizer experiment was conducted an eight-year-old apple (Malus domestica Borkh.) orchard at Debrecen-Pallag. In trial Pinova cultivar used. this study, two fermented chicken manure products were added (in 20 cm depth) test their status, plant uptake fruit quality. It found that applied treatments slightly increased pH levels almost all cases, but significant effect not observed compared control. Leaf contents (N, P, K, Ca Mg) measured experiment. status affected by treatments. However, used had strong characteristics inner parameters, such as diameter Brix value. Moreover, it established yield significantly.