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In the Philippines, rainfed rice is grown on about 1.3 million hectares or 33% of the total rice area of 4 million hectares. With unpredictable weather, highly variable and heterogenous soils, the evaluation of recommended location specific rainfed rice varieties was done at CSU Piat from 2013WS to 2014WS. Treatments were laid out in RCBD with three replications. Twelve sahod ulan varieties were evaluated for yield, yield components and agronomic traits. PSB Rc14 was used as the check variety for rainfed while PSB Rc82 and NSIC Rc222 as farmers preferred variety in the locality. Across seasons, results showed significant differences in yield which is attributed to varietal and genetic differences of materials tested. NSIC Rc284 obtained the highest mean yield (4.2 ton/ha) with medium maturity of 110.67 days. Second highest yielder were NSIC Rc288 and NSIC Rc276 (3.89 and 3.88 ton/ha) with maturity of 94 and 92 days respectively. These are the top 3 selections specifically adapted at CSU Piat condition. These results/selections provide farmers an option of increasing yield and income using the right rainfed variety even in highly variable rainfed ecosystem.

VARIETAL TRIAL OF RAINFED RICE GENOTYPES USING DIFFERENT NUTRIENT MANAGEMENTS AT CSU PIAT, CAGAYAN, PHILIPPINES