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Tillage for soil fertility before fertilizers

Canadian Journal of Soil Science, 2000
The present concern for decreased tillage in crop production systems makes it interesting to look back 300 years to when Jethro Tull introduced his system of intensive tillage for cereals and fodder crops. His experiments in England, at a time when landowners started paying more attention to farming, established that frequent tillage with plows could ...
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Soil Fertility and Fertilizers

Journal of Range Management, 1966
Arthur L. Bell   +2 more
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Soils and Soil Fertility

Soil Science, 1951
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Fertilizers and soil fertility

Agriculture and Environment, 1979
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Soils and Fertilizers

Soil Science, 1968
F. S. C. P. Kalpagé, R. B. Alderfer
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