Study and determined the best rotation on wheat in tropical dry conditions.
2006
Naraki, Faraj Ol-Lah | Hosseini, Karim | Safi Khani, Mansur | Musavi, Yazdan | Rad, Ardeshir
Planting cereals continuously in warm dry land areas decrease soil fertility and leading to decreased grain yield .in addition, continues wheat-wheat increase pests, disease and weed growth leading to reduced wheat grain yield. In order to increase the yield, improve yield stability, and prevention of soil degradation in dry land area research for determining the best farming system and introducing the most suitable crops in rotation with wheat .This study was conducted in gachsaran agricultural research station for 8 consecutive years from 1374 up to 1382 wheat growing season. Study were consisted of 10 treatments including wheat, barley, fallow, chick pea, alfalfa, vetch, sunflower, safflower and rape seed which planted in a two years rotation with wheat in RCB design with 3 replications . combined analysis of variance were performed on wheat grain yield and economical evaluations were done and the effects of each treatment on soil fertility were evaluated .The result showed that there was significant differences of grain yield of wheat between different treatments .Economical evaluations from the net input point of view showed that all treatments had significant increasing comparing with wheat –wheat and wheat-fallow farming system. For there more some treatments showed some positive effects on soil fertility including increasing in organic matter, nitrogen and potassium amount.
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