Author:
Lorimer M. S.,Douglas L. A.
Abstract
The effects of 5 management practices (native forest, native pasture, phalaris
pasture, crop-pasture rotation, and continuous cropping), applied prior to
sowing wheat seeds, on the distribution of wheat roots and associated grain
yields were studied. The grain yield from the 5 treatments decreased in the
following order: crop-pasture rotation > native pasture > phalaris
pasture > native forest > continuous cropping, and this was directly
related to the distribution of the wheat roots in the respective treatment
plots. A high incidence of root disease in the phalaris pasture plots severely
restricted root distribution and grain yield despite the apparent
‘ideal’ soil conditions for plant growth. The implications of
current land management practices, which lead to the formation of plough-pans
and reduced root penetration into the subsoil, are discussed in terms of
future wheat production on this soil type.
Subject
Earth-Surface Processes,Soil Science,Environmental Science (miscellaneous)
Cited by
4 articles.
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