Effects of Nitrogen and Tillage practices on oil yield and yield components of different Rape seed(Brassica napus) cultivars

Subject Areas :

pooria  mazloom ¹ (Assistant professor, Department of Agronomy, Islamic Azad University, Chalous Branch,Chalous)

Received: 2021-02-19 Accepted : 2021-06-22 Published : 2019-11-22

Keywords: Seed yield, Nitrogen Fertilizer, Oil yield, rape seed,

Abstract :

Brassica napus is the second most important oilseed crop in the world. Today, conventional tillage methods are considered more than reduced tillage methods .To investigate effects of nitrogen and tillage practices on oil yield and yield components of different Rape seed in 2018, a research field was conducted in the‌ damavand agricultural research center, The experimental was conducted a factorial using randomized complete block design with three replication. The factors were three levels of nitrogen fertilizers : N1= application of 50 kg/ha , N2= application of 100 kg/ha , N3 application of 150 kg/ha of nitrogen with two levels of varieties : V1= Olpro and V3= Elvis and three of tillage practices : NT= No-Tillage , MT= Minimum-Tillage, CT= Conventional Tillage . Comparing the average effect =, results showed that most of the phenological stages such as pod number in plant per plant, seed number in pod, 1000 seed weight, oil yield/ha and seed yield. Results showed that Elvis with mean seed yield 4878 kg/ha and conventional tillage with mean oil yield of 1128 kg/ha had superior.Nitrogen 100 kg with mean oil yield with mean 831kg/ha had superior to oil yield. Seed yield/ha and oil yield/ha were higher than other levels of Interaction of T3V2N2 and interaction on NT, VT, VN and VNT on seed yield had significant difference at the %5 level which indicates better performance in Elvis cultivar and conventional tillage