Fertiliser practice in England and Wales
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B. M. Church; J. Webber
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Article
📅
1971
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John Wiley and Sons
🌐
English
⚖ 595 KB
## Abstract Aims and methods for a series of surveys, begun in 1969, in England and Wales, are described. The surveys are designed to monitor changes in practice on individual crops for the whole country and to provide estimates, based on data collected aver 3–4 years, of practice within regions of