The interference effects of weeds on the yield and yield components in different nitrogen levels in faba bean (Vicia faba)

Abstract In order to investigate the effects of nitrogen and weed interference on the yield and yield components in the broad bean plant, an experiment was conducted in 2011 in the split plot form in the randomized complete block design with four replications in the farm of Martyr Salemi, Ahwaz. The main factor included nitrogen in three levels (20, 80 and 140 kg.he-1 net nitrogen) and the interference of weeds in three levels (Weeding to before the budding stage budding, weeding to flowering and complete weeding). The obtained results of the measured variance analysis of qualities showed that the nitrogen effect on the entire qualities was significant and in the case of interference of weeds in most of the studied qualities had a significant difference with each other. The results demonstrated that in the case of nitrogen the highest performance was related to the utilization of 80 kg in hectare and in case of weeding the highest yield was related to the complete weeding. But as in the most of the assessed qualities the 80 and 140 kg.he-1 treatments and also complete weeding and weeding till the flowering stage did not have a significant difference and with reference to the bioenvironmental issues and an economy based on the reduced use of the nitrogenous fertilizers and even reducing the labor costs, the 80 kg.he-1 treatment and weeding till flowering can be introduced as the most desirable treatment in the desired experiment.

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