Effect of long term crop rotations and rewetting of soil on stability |
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Authors: | A.K. Misra H. Daniel R. Till G.J. Blair |
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Affiliation: | Indian Institute of Soil Science, Nabi Bagh, Berasia Road, Bhopal - 462038 (M.P.), India.;Department of Agronomy and Soil Science, University of New England, Armidale, NSW 2351, Australia. |
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Abstract: | Abstract. Soils, of clay texture, were taken from two crop rotations in a long term trial, (i) maize - spring oats - maize, (ii) maize - spring oats - autumn oats - red clover, and from an adjacent uncropped fenceline. Wet sieving was preceded by wetting under vacuum, wetting under tension or by direct immersion. The undisturbed soil was the most stable; the inclusion of clover in the rotation improved aggregate stability. Direct immersion was most disruptive in disintegrating aggregates followed by vacuum and pre-wetting under tension. |
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Keywords: | Rotations soil aggregates stability monitoring wetting clay soils |
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