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The effect of soil water content during land preparation on aspects of soil physical condition and cotton growth



The effect of soil water content during land preparation on aspects of soil physical condition and cotton growth



Soil & Tillage Research 9(3): 287-302



In a field experiment [Queensland] on cracking clay soil, the effects of soil water content during pre-sowing land preparation and intensity of cultivations during the growing season on soil physical conditions and growth of a furrow-irrigated cotton crop were investigated. Before sowing, cultivations typical of local practice were imposed on soil in a 'dry', 'moist' and 'wet' state, representing three main treatments. During the season, three intensities of inter-row cultivation were superimposed on each of the three main treatments. Soil physical conditions and cotton plant growth were influenced by soil water content during pre-sowing land preparation, but not subsequent inter-row cultivation. In soil prepared 'dry', after the first irrigation significantly more water was extracted by the crop than from either of the other two treatments. The morphology of the post-season soil profile of the land prepared 'dry' differed little from the unirrigated and uncultivated pre-season profile, whereas that of the land prepared 'wet' had altered considerably, being generally massive to a depth of 0.65 m. Cotton in the land prepared 'dry' grew tallest and had most green bolls of any main treatment on most weeks during the season. For most of the season, land prepared 'dry' or 'moist' had similar above-ground plant dry matter, both having greater amounts than the 'wet' treatment. Plant population per metre of row was equal in the 'dry' and 'moist' treatments, and lower in the 'wet'. Yield differences were not recorded between treatments as there was high insect damage in the 'dry' treatment.

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Accession: 001973001

Download citation: RISBibTeXText

DOI: 10.1016/0167-1987(87)90077-8


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