Register      Login
Crop and Pasture Science Crop and Pasture Science Society
Plant sciences, sustainable farming systems and food quality
RESEARCH ARTICLE

Some effects of field history on the relationship between grass production in subterranean clover pasture, grain yield and take-all (Gaeumannomyces graminis var. tritici) in a subsequent crop of wheat at Bannister, Western Australia

GC MacNish and DA Nicholas

Australian Journal of Agricultural Research 38(6) 1011 - 1018
Published: 1987

Abstract

The relationship between grass production in subterranean clover pastures with two different rotation histories and take-all in a subsequent wheat crop following barley was studied. Grass production in the pastures ranged from 0 to 1700 kg ha-1. The incidence of take-all in the wheat crop ranged from 10 to l00%, while the take-all severity percentage ranged from 4 to 99.In one rotation series (pasture 9 years; barley, barley, pasture, wheat), each kilogram increase in grass production in the last pasture year caused a 0.087% increase in the take-all severity rating. In the second series (pasture 7 years; oats, pasture 3 years; barley, wheat), each kilogram increase in grass production caused a 0.040% increase in severity. These figures are significantly different (P < 0.05). Thus the field history ranging back at least four seasons influenced the effects that grass level in the last pasture year had on take-all severity. Reductions in wheat yields ranged from 8.6 to 10.5 kg ha-1 for each 1% increase in take-all severity rating.

https://doi.org/10.1071/AR9871011

© CSIRO 1987

Committee on Publication Ethics


Export Citation Get Permission

View Dimensions