Evolution of Agrochemical Chernozem From Cojocna in Differentiated Fertilization Case of Maize Crop


The research undertaken in the field of differentiated fertilization in maize crop aim at rationalizing fertilizing mineral inputs and at their reduction by promoting alternatives and strategies for an efficient inclusion within differentiated fertilization systems of humiferous organic resources In order to achieve the aforementioned research objectives, field experiments were conducted in 2010 at SDE Cojocna of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, on a cambic chernozem soil, on maize crop including different fertilizing sources, mineral- from complex NP fertilizers, organic- from semi-fermented stable manure. Tab. 1 Influence of differentiated fertilization on agrochemical soil indices The principal agrochemical parameters of soil at depth 0- 20 cm No. Fertilization level N/P2O5 (kg a.s./ha) + manure (t/ha) + compost (t/ha) pH OH

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