Abstract
One of the advantages of ratoon technology was that the plant age becomes shorter so that it can utilize water in limited conditions. This study aimed to determine the feasibility (agronomy and economy) of cultiviting Rojolele local rice ratoon to anticipates drought. The study was conducted in the rice fields of Polaman, Argorejo, Sedayu, Bantul from May to December 2019. First planting as “Un-ratoon” treatment and second planting as “Ratoon” treatment. The un-ratoon and ratoon technology follows the Integrated Crop Management (ICM), but ratoon technology does not conduct seedbed and tillage. Morphological observations included plant height, number of productive tillers, leaf length, leaf width, panicle length, number of filled grains per panicle, number of empty grains per panicle, weight of 1,000 grains, weight of grain per hill and productivity. Observation data were analyzed using the Independent Sample T-test. An analysis of farming was carried out by calculating the B/C, R/C and MBCR (Marginal Benefit Cost Ratio). Ratoon cultivation technology was feasible to be developed because it has more than one BC ratio, RC ratio and MBCR value. With ratoon technology, period for crop maturity becomes shorter (45.66% decrease) so that it was a technological breakthrough to anticipate climate change (drought).
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