Mohammad Malmir, Amir Hosein Shirani Rad, Ali Khorgami and Shahram Rashidi
In order to investigate the effect of the amount of Nitrogen on growth characteristics of spring type of forage canola in summer cultivation, an experiment was conducted in year 2012 in agricultural research center of Ghazvin. This experiment was done in split plot form and with a randomized complete block design with three replications. The main factor included five levels of Nitrogen (0, 75,150,225 and 300 kg\h). The sub factor included two varieties of spring type of Canola including RGS003 and SARIGOL. The impact of Nitrogen (p≤0/05) on final fresh forage was significant. The highest fresh forage yield was obtained from applying 300 kg/ha Nitrogen and RGS003 variety treatment with the average of 46382/42 kg/ha. The lowest fresh forage yield was approached from non application of Nitrogen and SARIGOL variety treatment with the average of 9020/83 kg/ha
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