Rice seedlings were manually
transplanted at the same density in each plot. In all the treatments
studied, fertilizers were applied at rates of 180 kg-N ha
1
, 90 kgPha
1
and 165 kg-K ha
1
. Urea and potassium chloride were
applied, 50% and 30% as basal fertilizer, 25% and 30% as tillering
fertilizer, and 25% and 40% as panicle fertilizer, respectively.
Superphosphate was applied 100% as basal fertilizer.