Population and N and K application of corn TCI variety at Seram, Mollucas (Indonesia)
1993
Alfons, J.B. | Andyantoro, A.
A field experiment of corn was conducted at Kairatu, Ceram, Moluccas from October 1990 to January 1991 to study the effect of plant population and N and K application on yield of corn TCI variety. The treatment were arranged in a split-plot design with three replications. Main plots were plant population (plant spacing), i.e. : 44,444 plants (75 x 60 cm), 66,666 plants (75 x 40 cm) and 88,888 plants (75 x 30 cm)/ha. Sub plots were combination of N and K application, i.e. : 4 rates of N (0, 45, 90, and 135 k/ha) and 4 rates of K (0, 30, 60 and 90 kg K2O/ha) plus control (without N and K application). The result showed that there was interaction effect of plant population N and K application on yield of TCI corn. Increasing population from 44,444 to 66,666 plants/ha significantly increased the grain yield of corn (from 2.72 to 3.20 t/ha). Increasing population of corn up to 88,888 plants/ha, a combination of 90 kg N, and 60 kg K2O/ha on basalt application 45 kg P2O5/ha resulted on highest grain yield of corn (3.97 t/ha).
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