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Malavolta,E.; Coury,T.; Ranzani,G.; Catani,R. A.; Brasil Sobr.,M.O. C.; Arruda,H. V. de. |
This paper relates the results of an experiment designed to study the comparative effects of several phosphates applied to corn crops. The following phosphates were applied to a latin square of 6x6: Latif (a rock phosphate), fospal, superphosphate, fertifos, hiperfosfato and serranafosfato (a fusion phosphate). The nutrients were employd at the rates of 200 kg of N (as Chilean nitrate), 200kg of K2O (as muriate of potash) and 200 kg of P205. To correct the acidity and to improve the poor physical conditions of the sandy soil studied limestone (450 kg/Ha) and cotton seed meal (900 kg/Ha) were added to all plots; liming was made one month in advance to the planting. In the second year, in the same place, the split-plot technique was used: half plot received... |
Tipo: Info:eu-repo/semantics/article |
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Ano: 1953 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761953000100009 |
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