Lower and higher input crop management in oilseed rape-influence on yield and some another important properties
Two different levels of crop management (seed rate, nitrogen fertilization, growth regulators spraying in autumn and spring,sulphur fertilization and fungicide use at time of flowering) were used to test specific response of 25 winter oilseed rape varieties (18 lines, 7 hybrids). Trials were carried out at 8 locations in 2003/04 and 9 locations in 2004/05 as a small plot trial with 3 replications. Influence of additional inputs in higher management level delayed maturation by 1-2 days, reduced lodging (very different depending on variety) and damage especially in case of Sclerotinia sclerotiorum and Phoma lingam. Thousand grain weight was higher for most varieties in higher management level (+ 0,16 g =+ 3,3 ％ on average), yield increased by 11％ on average (-1 to +29 ％ depending on location). Oil content of major part of varieties decreased in higher managment level (on average by -0,4 ％). Yield increase of varieties varied greatly due to trial location. As expected, higher yields were achieved at higher level of crop management, but response to higher inputs was not the same. Efficiency of input used by some varieties was better compared to others. This phenomenon can be exploited by farmers when choosing the most appropriate variety for the actual both environmental and fiscal position of their farm.
Winter oilseed rape crop management levels yield efficiency of inputs
Petr Baranyk Petr Zehnálek Jan Kazda
Czech University of Agriculture, 165 21 Prague 6-Suchdol, Czech Republic Cetral Institute for Supervising and Testing in Agriculture, 569 01 Hradec nad Svitavou, Czech Repub
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
976-977
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）