WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Tuesday, January 23, 2018

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1466. Coventry, D.R. and J.F. Kollmorgen. 1987. An association between lime application and the incidence of take-all disease in wheat.. Aust. J. Exp. Agric., 27:695-699.
The effects of lime, deep ripping and fertilizer treatments on the occurrence of take-all symptoms in wheat. Although liming the soil increased damage by Gaeumanomyces graminis var. tritici, and perhaps other pathogens, the overall grain yields were not reduced because of the countering effect of lime promoting yield. Lime also altered the composition of grasses in pasture plots, resulting in more brome grass and barley grass. The control of take-all by crop rotations and controlling grassy weeds in pasture could be a necessary adjunct to liming if maximum yield benifits are to be obtained. Liming severely acid soils benifits the host more than the pathogen, whereas in moderately acid soils the reverse was true. The traditional rotation is a long-term clover ley pasture (5-8 yrs) with a significant component of annual grasses that host G. graminis var. tritici, followed by 2-4 years of consecutive cereal crops. This system therefore favours a build-up of inoculum of the take-all fungus and liming may therefore increase grain yield losses.

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