عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In order to study the effects of row spacing and weed control duration on yield, yield components and oil content of canola, a factorial experiment was conducted using randomized complete block design with 3 replications. The factors comprised row spacing at 2 levels (25 and 35 centimeter) and weed control 4, 8 leaf stages and formation of flower buds. Weeds were permitted to grow by the crop after the above mentioned growth stages. Two check treatments as control, including weedy and weed free were also selected. Evaluated traits were number of pods.plant-1, number of grains.pod-1, 1000-grain weight, grain yield, oil content and oil yield. Results showed that different row spacing had significant effect on all traits except oil content. Increase in row spacing was significantly accompanied by increase in pod number.plant-1 and 1000-grain weight. Other traits were significantly decreased with increasing row spacing. In addition, increase in weed control duration resulted in significant increase in all traits except oil content. The interaction of row spacing × weed control duration was also significant for all traits except 1000-grain weight and oil content. Based on the results, the highest values of grain and oil yield were related to 25 centimeter row spacing on total weed free check and the lowest amounts of these traits were obtained from 35 centimeter row spacing on weedy check treatment.
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