Open AccessTítulo en español.
Author(s) -
Abdul Wahab,
M. A. Lugo-López
Publication year - 1980
Publication title -
the journal of agriculture of the university of puerto rico/the journal of agriculture of the university of puerto rico
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 10
eISSN - 2308-1759
pISSN - 0041-994X
DOI - 10.46429/jaupr.v64i2.10232
Subject(s) - humanities , physics , philosophy
A trial was conducted on a Guyana peaty clay to determine the effects of lime and split NPK applications on cassava yields. All plots received broadcast lime at the rate of 6.72 t/ha. Treatments were lime only (control); 400 kg/ha in a 3:1:2 ratio of N, P2O5 and K2O one month after planting; and the same amount banded as two equal doses at 1 month and 5 months after planting. There was no significant increase in fresh root weight attributable to the fertilizer treatments. However, stems and leaves increased in fresh matter by 110 and 35%, respectively when plots received one full dose of NPK at 1 month and when the same amount split in two equal split doses, was applied at 1 month and 5 months after planting. The likelihood of an improper NPK balance associated with increased vegetative growth is discussed.