Titlebook: Learning Technology for Education Challenges; 6th International Wo Lorna Uden,Dario Liberona,Yun Liu Conference proceedings 2017 Springer I

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Anne-Maria Aho,Jane Sinclair years been liberally treated with manures and fertilizers supplying mainly nitrogen, phosphorus, and potassium, along with calcium and sometimes magnesium where there is a special need for either of the latter two elements. Although the advantages of the liberal use of nutrients normally outway the

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John K. Tarus,Zhendong Niuland, or in depressions, this may enhance the development of temporary reducing conditions in the soil. This may result in the loss, through denitrification, of nitrogen that would otherwise be available to the crop. Another example is the application of organic materials to the soil. When applied a

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years been liberally treated with manures and fertilizers supplying mainly nitrogen, phosphorus, and potassium, along with calcium and sometimes magnesium where there is a special need for either of the latter two elements. Although the advantages of the liberal use of nutrients normally outway the

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