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Fertilizer experiments on wheat: VII

This paper presents the results of twelve N, P, K, S mineral fertilizer trials on wheat (Triticum aestivum L.), carried out in 1969 to 1973 at Tietê, Capão Bonito, Itaberá and Itararé, State of São Paulo. The results obtained in Capão Bonito and Tietê trials did not show significant responses to nitrogen, phosphorus, potash, and sulfur. The effect of phosphorus and mineral fertilizer were highly significant in Itaberá and Itararé trials.


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