THE EFFECT OF INOCULUM DISTRIBUTION AND SOWING DEPTH ON PLEIOCHAETA ROOT-ROT OF LUPINS

被引：9

作者：

SWEETINGHAM, MW

机构：

[1] Western Australian Department of Agriculture, Baron-Hay Court, South Perth, WA

来源：

AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH | 1991年 / 42卷 / 01期

关键词：

D O I：

10.1071/AR9910121

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

In paddocks with a history of previous lupin cultivation, propagules of the fungus Pleiochaeta setosa are most concentrated in the top 2 cm of soil and rapidly decline to zero at the base of the tillage layer (10-14 cm). The severity of Pleiochaeta root rot is greatly reduced as sowing depth increases, due to avoidance of the concentrated surface soil borne inoculum. Hypocotyls are not infected by P. setosa, enabling disease escape. In four field trials over three seasons, optimum establishment and grain yield occurred at sowing depths close to 5 cm, deeper than previously recommended for lupins in Western Australia.

引用

页码：121 / 128

页数：8