Effect of seed priming and potassium fertilizer on yield and yield components of canola in different planting dates

Subject Areas :

Hamid  Hatami ¹ (Assistant prof. of. Agronomy, Department of Agriculture, Bojnourd Branch, Islamic Azad University Bojnourd, Bojnourd- Iran.)

Received: 2013-03-03 Accepted : 2013-08-17 Published : 2014-05-22

Keywords: Rapeseed, priming, Potassium, Key words: Planting date,

Abstract :

To evaluate the priming effect and potassium on yield and yield components of rapeseed cv. Okapi at different  planting dates, an experiment was conducted during 2012 at Bojnourd. Factorial experiment in a randomized complete block design with four replications in two planting dates was conducted (1 October and 1 November). Factors examined included two levels of seed priming (non-Prime and priming solution of  KNO3 ,-1 MPa for 24 h) and potassium fertilizer levels (zero, 75 and 150 kg K2o. ha). After analyzing the results of two simple planting date, were combined for analysis. Combined analysis of variance showed that all three experimental factors affect the number of pods per plant, grain yield, harvest index, and oil yield had significant impact. Planting date and priming showed a significant effect on 1000 seed weight. Planting date 1 October compared with 1 November, seed priming compared with non- Prime and potassium fertilizer consumption compared with no use, the characteristics were significantly increased. Therefore Planting date 1 October was optimum planting date on canola in the region, and  in case of delay in sowing seed, priming done with a solution of KNO3 (-1 MPa for 24 h) or K2o consumption of 75-150 kg per hectare is recommended.