Grain yield of winter wheat in different cropping systems

Abstract

This paper deals with effect of two-, three-, four- and six-crop rotation on the grain yield compared with continuous cropping of the winter wheat. Grain yield are measurement in frame crop rotations of field on the experimental field „Radmilovac“ of Faculty of Agriculture (University of Belgrade) during 2005/06 - 2012/13. In two crop rotation are included maize and winter wheat, in three-crop rotation: maize, soyabean, and winter wheat and in four-crop rotation are included maize, winter wheat, red clover and spring barley+red clover. Winter wheat cultivar “Pobeda”, in dry farming water regime were investigated on chernozem luvic soil type. The area of each field crop rotation and field of continuous cropping was 1000 m-2. In average, the greatest yield of winter wheat is obtained in 2011/12. (4.30 t/ha) and the smallest grain yield in dry 2006/07 (3.59 t/ha). Grain yield of winter wheat in continuous cropping system (3.27 t/ha) was statistical very significant lower compared with grain yield in two- (3.74 t/ha), three- (3.88 t/ha), four crop rotation (4.27 t/ha) and six crop rotation (4.31 t/ha). The difference in grain yield between investigation crop rotation were statistical significant. The difference in grain yield between the four-crop rotation and six-crop rotation was no statistical significant. In the future cropping system, especially in extensive low-input technology production, sustainable agriculture and in organic farming have a great importance.