The influence of the agrofund applied to maize as a remaining effect upon the production at wheat cultivated in the south area of Oltenia

Abstract

The experience has been executed on a cernosium soil, typical from the southern area of Oltenia, with 3,12% humus, 0,45% nitrogen, 7 mg/10 g soil P2O5, 19,2 mg/100g dry soil K2O and a PH = 6,2. In the present paper it was pursued the influence of the agrofund applied to maize, as a remaining effect upon the wheat production, the experience being placed after the method of the subdivided plots with the graduations: a1=N100P50, a2=N150P100 and a3=N200P150. From table 1, which includes the dates, under the influence of the agrofund, in average on 3 years, result the following: - on the agrofund a1(N100P150), it was obtained the lowest wheat production, as a remaining effect of applying this agrofund to the maize, and namely, of 4449 kg/ha, on the agrofund a2(N150P100) the wheat production was of 4337 kg/ha, and on the agrofund a3(N200P150) the wheat production was of 5136 kg/ha. - on the agrofund a2 was obtained a statistically ensured increase, of 288 kg/ha, and on the agrofund a3 was obtained a very significant increase, of 677 kg/ha, in comparison to the production of the witness a1. In conclusion, under the climatic conditions of the years 2001-2003, on the typical cernosium from southern Oltenia, the doses of chemical fertilizers N150 and N200P150 have ensured the highest wheat productions, as a remaining effect applied at maize after different preliminary plants.