Resumo

VIEGAS, G. P.  e  FREIRE, E. S.. Fertilizer experiments with corn: VI - Studies on fertilizer placement. Bragantia [online]. 1956, vol.15, n.unico, pp. 1-20. ISSN 0006-8705.  http://dx.doi.org/10.1590/S0006-87051956000100001.

Various methods of fertilizer placement for corn were compared in 14 experiments carried out from 1936-37 to 1944-45 in four experiment stations : Campinas, Mococa, Pindorama, and Ribeirão Prêto. The method of fertilizer placement most generally used in the state of São Paulo was used as a basis for comparison. It consists in adding the fertilizer to the furrow and mixing it slightly with the soil just before sowing. Another method used was the placement of the fertilizer laterally, about 4 inches to one side of the seed row. Superphosphate, bone meal, potassium chloride, coffee bean ashes, Chilean nitrate, and cotton seed meal were used alone or in combinations. The results indicated that the application of phosphates mixed with the soil in the furrows was practically equal to side placement. The latter method was much better than the former for placement of the nitrogen or potassium fertilizers.