IMPORTANCE OF SECONDARY INOCULUM IN STRAWBREAKER FOOT ROT OF WINTER-WHEAT

被引：7

作者：

BRUEHL, GW ^{[1
]}

MACHTMES, R ^{[1
]}

MURRAY, T ^{[1
]}

机构：

[1] WASHINGTON STATE UNIV, DEPT PLANT PATHOL, PULLMAN, WA 99164 USA

来源：

PLANT DISEASE | 1982年 / 66卷 / 09期

关键词：

D O I：

10.1094/PD-66-845

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Inoculations with conidia of Pseudocercosporella herpotrichoides in Nov. (1979) reduced yields of a susceptible wheat (Selection 101) by 56%. Inoculations in Feb. and March (1980) had little effect on yield or bushel weight, but severe lesions developed on many stems. The early infections, representing the effect of primary inoculum, contributed most to yield loss, but the late infections, representing the effect of secondary inoculum, added to the amount of inoculum for succeeding crops. Inoculations of the same wheat 3 times, once each in Nov., Dec., and Feb., did not increase disease appreciably over that resulting from a single heavy inoculation in Nov. A single, heavy fall inoculation is recommended for variety screening trials.

引用

页码：845 / 847

页数：3

共 15 条

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