Effect of biological phosphorus and irrigation disruption on biomass and protein HI of canola (Brassica napus L.)

Results of evaluation of irrigation (irrigation disruption at beginning of flowering, end of flowering, grain filling and control) and biological phosphorus (0, 50, 100 and 150 g/ha) on the yield of Brassica napus L. cv. Hyola 401 , a split plot experiment was carried out based on randomized complete block design with four replications at the research farm of Shahid Beheshti Agriculture College (latitude 38° 51' N and longitude 41° 44' E and altitude of 1313 m above sea level) in 2010. Results of ANOVA showed the significant interaction effect between irrigation disruptions and phosphorus on biological yield (biomass) and Harvest Index (HI) of protein. that the highest biomass (4.007 kg/ha) belonged to normal irrigation with 50 g/ha phosphorus application. The lowest biomass (3.83 kg/ha) belonged to no phosphorus treatment and irrigation disruption at the beginning of flowering stage. The highest harvest index of protein (0.52) was obtained from irrigation disruption at the end of flowering and 50 g/ha biological phosphorus, and the lowest harvest index of protein (0.14 %) was obtained from irrigation disruption at the beginning of flowering and without phosphorus.

کلیدواژه ها:

Brassica napus ، irrigation disruption ، biological phosphorus ، biomass ، HI of protein