Adubação de soqueira de cana-de-açúcar

Ratoon fertilization in sugar cane

NOTA

Adubação de soqueira de cana-de-açúcar¹

Ratoon fertilization in sugar cane

José Gomes da Silva; Eduardo Abramides²

SUMMARY

A ratoon fertilization field experiment was set up in a latosol of Pirassununga country, State of São Paulo, Brazil.

Sugar cane variety was CB 49/260, at the third harvest.

Results were statistically significant and provided the following conclusions:

a) The deep application (with subsoilage) of 206.6 kg/ha of the fertilizers mixture formula (07-04-12) for the "soqueiras" fertilization provided a highly significant production increase of 22.83 t/ha, or 28% as related to the check ("A"). Economically speaking, this increase means an additional net income of Cr$ 387,51 per ha.

b) The production increase due to the deep subsoiling was of 17.92 t/ha (highly significant) and 7.50 t/ha (not significant) respectively with and without fertilization.

c) The production increase due to the added higher fertilization rate was of 15.33 t/ha (highly significant) and 4.91 t/ha (not significant) respectively with deep application (subsoilage) and surface application.

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Recebido pra publicação em 22 de setembro de 1975.

1

Trabalho apresentado na XXVI Reunião Anual da SBPC, em Recife, PE, em julho de 1974.

2

Com bolsa de suplementação do C.N.Pq.

Datas de Publicação

• Publicação nesta coleção
  11 Mar 2009
• Data do Fascículo
  1976