بررسی اثر تیمارهای تلفیق بر جذب نیتروژن باقیمانده از زراعت چغندر قند بر رشد و عملکرد گندم نان در تناوب

The overuse of chemical fertilizers can result in adverse ecological and environmental consequences in agriculture use of green manure and mineralization management of nutrients existing in them can play a key role in lowering amount of fertilizers. In order to study the effect of the nitrogen remaining from the green manure used in sugar beet cultivation on the growth index and the wheat yield in 2012, a 3 replicated factorial trial based on a randomized complete block design was carried out in shahrekord university. 11 treatments of integrated green manure previously allocated to sugar beet cultivation were considered as the first /factor and the use of dressing fertilizer considered as the second factor. Analysis of variance indicated that peas manure, lathyrus + 50 kg nitrogen were the best and no fertilizer application (control) and lathyrus + 100 kg nitrogen were the weakest treatments applied. In some treatments crop growth rate (CGR) experienced a more increment trend which indicated the continuation of nitrogen mineralization. The results of the relative growth rate (RGR) showed decreasing trend in these treatments starts later than other treatments.