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Title: Long-term effects of tillage techniques on soil chemical properties / P.F. White, R.K. Belford and A.D. Robson.
Author: Robson, A. D. (Alan David), 1945- (Western Australia Univ., Nedlands. School of Agriculture) ; White, Peter Francis (Western Australian Dept. of Agriculture, Perth. Crop Agronomy Branch) ; Wheat Research Council (Australia) ; Western Australia. Dept. of Agriculture. ; Belford, R. K. (Western Australian Dept. of Agriculture, Perth. Crop Science Branch)
Year: 1988.
Series: Final report (Wheat Research Council (Australia))
Description: 9, [6] leaves ; 30 cm.
Subject: Soil chemistry. ; Tillage. ; Direct sowing. ; Wheat. ; Western Australia.
Notes: Cover title. 1 table, 5 figures.
21 ref. Final report Wheat Research Council Project DAW 28 W (72/5721)
(En)
Type: Book
Abstract: Trials were located over a wide range of soil types and environments, however the major effects of tillage were similar at most locations : Direct drilling markedly changed the distribution of nutrients in the soil and lead to higher concentrations of extractable P, extractable K, total N and organic C in the surface layers of the soil; changes occurred soon after the adoption of direct drilling; nitrogen application depressed the pH of poorly buffered soils; and the higher concentration of nutrients near
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