Research on the effect of wheat yield fertilization in the long term experience at ARDS Secuieni

Abstract

The rational application of fertilizers ensure along with other means of increasing production, the raising of soil fertility and thr practice of a large productivity agriculture and economic efficiency. The fertilizer dose schedule is a tehnological activity, base don the agrochemical data from the field and from plamnned harvest. This paper presents experimental results for 2006-2009 period obtained in a long experience on the influence of phosphorum and nitrogen fertilizer on winter wheat production at ARDS Secuieni. The experience had in study: A – P2O5 dose: 0, 40, 80, 120, 160 kg/ha; B – N dose: 0, 40, 80, 120, 160 kg/ha. The cultivated variety: Crina. The productions were influenced by the dosage of fertilizer applied but also by the climatic conditions during the research. The productions in the unfertilized variant were 3269-6590 kg wheat/ha (period average was 4910 kg wheat/ha). By applying the P2O5 and N fertilizers the production increases were 5-33% representing 228-1617 kg wheat/ha. By applying phosphorus fertilizers the productions increases were 358-614 kg wheat/ha representing 6-11% and by applying nitrogen fertilizers increases ranging from 543-1150 kg wheat/ha representing 10-22%. The marginal increases in pjosphorus fertilizer application were 3,83-8,95 kg wheat/kg P2O5 and 7,18-13,57 kg wheat/kg N in nitrogen fertilizer application, in both cases were inversely proportional with the doses of fertilizers applied.