Effect of density and time of removal of volunteer canola (Brassica rapa L.) on yield loss of wheat (Triticum aestivum L.)

被引：10
|
作者：
O'Donovan, John T. [1 ]
Harker, K. Neil [1 ]
Dew, Donald A. [1 ]
机构：
[1] Agr & Agri Food Canada, Lacombe Res Ctr, Lacombe, AB T4L 1W1, Canada
来源：
CANADIAN JOURNAL OF PLANT SCIENCE | 2008年 / 88卷 / 04期
关键词：
Brassia rapa; volunteer canola density; time of weed removal;
D O I：
10.4141/CJPS07204
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Field experiments were conducted at Lacombe, Alberta, in 1976, 1978, and 1979. Nonlinear regression analysis of the data indicated that initial slopes (% wheat yield loss at low canola densities) varied from 0.29% in 1979 to 2.44% in 1978. However, volunteer canola at densities of 47 (1976), 345 (1978), and 251 (1979) plants m(-2) had little effect on wheat yield if the canola was removed at approximately 25 d or earlier after wheat emergence.
引用
收藏
页码：839 / 842
页数：4
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