Yields of Two Rice Varieties (Oryza sativa L) at Four Planting Densities under Irrigation Conditions,2006

Abstract

This study, conducted January–May 2005 on a farm in Villa La Mata, Sánchez Ramírez province, determined the productivity of two rice varieties (Oryza sativa L.) under direct seeding at four planting densities under irrigation, using a two-factor randomized block design comparing varieties (IDIAF-1, IMPALE-112) and densities (94, 123, 152, 181 kg/ha), evaluating paddy yield, yield components, and economic returns. No significant differences were found by variety except thousand-grain weight (better in IDIAF-1) or by density except panicles/m² (best at 123 kg/ha). Economically, increasing IDIAF-1 seeding above 94 kg/ha reduced profitability, while IMPALE-112 increased profitability up to 123 kg/ha before declining.

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