[Fertility control, fertilization and maize nutrition]
1985
Stevanovic, D. (Institut za zemljiste, Beograd (Yugoslavia)) | Veskovic, M.
The report presents the average results of several years' experiments on maize fertilization on pseudogley from Varna near Sabac (SFR Yugoslavia), and brown forest soil from Mladenovac(SFR Yugoslavia). The soils were of acid reaction (pH in nKC1 = 4.35 and 4.70), low to medium humus content (1.46 and 1.92%), medium potassium content (10.1 and 17.4 mg K2O(100g) and finally very poor in available phosphorus (4.1 and 4.7 mg P2O5). Pseudogley and brown forest soil are the most representative types of soil in SR Serbia (SFR Yugoslavia). The experiment was carried out by 37 different treatments of NPK fertilizer: N6O, N9O, N12O, N5O P6O, P9O, P12O (with all N and K doses) K4O, K6O, K8O (with all N and P doses). The following was concluded: for high maize yields (9-10 t/ha) on examined soils, doses of about 120 kg N, 69-90 kg P2O5 and 40 kg K6O/ha should be applied per year. For obtaining the average maize yields of 6-7 t/ha 60 kg of N, 60 kg of P2O5 and 40 kg K2O/ha per year are necessary.
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