chakeralhosseini, M. (2009). Study on the Effects of N and P on Grain Yield of Rapeseed in Semi-Tropical Rainfed Condition. , 22(2), 147-154. doi: 10.22092/ijsr.2009.126994
Mohammad reza chakeralhosseini. "Study on the Effects of N and P on Grain Yield of Rapeseed in Semi-Tropical Rainfed Condition". , 22, 2, 2009, 147-154. doi: 10.22092/ijsr.2009.126994
chakeralhosseini, M. (2009). 'Study on the Effects of N and P on Grain Yield of Rapeseed in Semi-Tropical Rainfed Condition', , 22(2), pp. 147-154. doi: 10.22092/ijsr.2009.126994
chakeralhosseini, M. Study on the Effects of N and P on Grain Yield of Rapeseed in Semi-Tropical Rainfed Condition. , 2009; 22(2): 147-154. doi: 10.22092/ijsr.2009.126994
Study on the Effects of N and P on Grain Yield of Rapeseed in Semi-Tropical Rainfed Condition
Researcher, Agricultural and Natural Resources Research Center of Kohgiluyeh Va Boyerahmad
Abstract
Effects of nitrogen, phosphorus, and interaction of these nutrients on grain yield of canola variety (Brassica napus L.), hyola 308 was studied under rainfed conditions ( mean annual rainfall of 450 mm) in a calcareous soil (Fine loamy, Carbonatic, Hyperthermic, Typic Calciusteps). The experiment was carried out in a factorial CRB design with three replications for two years (2003-2005). The content of organic matter, available phosphorus and potassium in soil was 0.78%, 10 and 252 mg.kg-1, respectively. Treatments included four rates of nitrogen (0, 30, 60 and 90 Kg N ha-1) and three rates of P (0, 45 and 90 Kg P2O5 ha-1). The results showed that the effects of N, P and N*P interaction was significant on grain yield at α=1%. It can be concluded that application of N, P increase grain yield. N and P application increased significant thousands kernel weight (TKW). According to the results of this experiment, application of 90 Kg N ha-1 and 45 Kg P2O5 ha-1 for similar conditions is recommendable.
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