Effect of different nitrogen doses on some autumn wheat production

Abstract

One of the most important ways to increase production of wheat is the application of fertilizers. Grain production at wheat is largely determined by the administration of nitrogen fertilizers, in close interdependence with the specific conditions of the year, the state of vegetation in winter entrance and its resumption in spring. Noteworthy is the fact that from the unfertilized agricultural fund N0P0 (mt) to the N80P70 was obtained an increase of 1628 kg / ha. This increase is reduced to 1144 kg/ha between N80P70 and N120P70 agricultural fund and 452 kg/ha between N120P70 and N160P70. With regard to the specific reaction at fertilizers application of different levels of fertility, Otilia had best capitalizes on the increasing nitrogen, achieving an increase (the average of the three agricultural funds) of 1068 kg/ha compared to Pitar control variety. The interaction between wheat varieties and fertilization doses revealed the Otilia variety and the N160P70 fertilization dose, with a yield of 8190 kg /ha. Concerning the behavior of varieties at increasing doses of chemical fertilizers, we find that the nine analyzed varieties obtain very significant production increases.