Yield, yield components and soil characters Brassica napus L. as affected by tillage systems and sowing date
In order to study the effect of tillage systems and sowing date on yield, components of yield and soil characters of rapeseed genotypes (Brassica napus L.), two field experiments was carried out with a silty clay loam textured soil at the Sari Agricultural Experimental Station, situated at 25 km of Eastern Sari, Iran in 2001-2002 and 2002-2003. The experimental design was split plot factorial with three replications. Three tillage system levels were allocated to main plots, and interaction of rapeseed genotypes (Hyola 401, Pf) and sowing date (including 8, 23 Sepand 7 Oct ) to stb-plots.The tillage levels consist of. No- tillage, Minimum tillage (residue return with two disk) and Conventional tillage (residue return with plow and one disk). Results of ANOVA using Procedure SAS showed that tillage system and rapeseed genotypes at the 1％ probability level had significant differences on stem diameter and niam number which conventional tillage were larger than other tillage systems in two years, but in this case there is no difference between minimum and no tillage. So in two year, Hyola 401 genotype was advantage than PF variety in stem diameter and niam number. So Combined analysis show that tillage system had significant differences on flowering period, sub branch height, plant height, sub branch number, grain number, thousands grain weight, grain yield, oil content and oil yield of brassica at the 1％ probability level but there is no difference between MT (2661/90 kg/ha) and NT (2612/2 kg/ha) systems.Sowing date treatment at the 1％ probability level had effects on, sub branch height, plant height,sub branch number, grain yield,oil content and oil yield and genotypes at the 1％ probability level had effects on flowering period, sub branch height, plant height,sub branch number, grain yield, oil content and oil yield of brassica. Overall the results show that a No-tillage system characterized by lower capital and labour requirements may be as profitable as a conventional system, despite unequal crop yields.
Tillage systems Brassica napus Yield and Oil content
H.Omidi Z.Tahmasebi Sarvestani A.Ghalavand S.A.M.Modarres Sanavy
Agronomy Departnent, Faculty of Agriculture ILam University, ILAM, Iran Agronomy Department, Tarbiat Modares University, Tehran, Iran
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1212-1217
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）