Abstract
Transition of productive irrigated rice fields into other forms makes agricultural sector have to optimized using its field. Purpose of study was to determine application rice-shrimp technology on soil chemical properties, rice productivity, and economical feasibility. Treatments applied were U1 = Control/technology used by local farmers, U2 = Rice-Shrimp cultivation by shrimp population 4,000 tails, U3 = population 6,000, U4 = population 8,000, U5 = Shrimp population 4,000 + rice husk 400 kg, U6 = population 6,000 + husk 400 kg, U7 = population 8,000 + husk 400 kg. The research design was completely randomized block and replicated three times. Results showed number of shrimp populations did not significantly affect to change soil pH, Eh value, level of Fe, and Mg, but had a significant effect on C-organic, N-total, available P and K, CEC. Application of husk as 400 kg and shrimp population up to 6,000 tails had a significantly effect on the number of tillers, grains per panicle, fresh biomass weight, rice yields up to 43.26% and net profit up to 269.14% compared to control by BC and RC ratios are 1.92 and 2.93, respectively while MBCR is 3.34. It means rice-shrimp technology on Bantul classified as feasible.
Highlights
The transition of productive irrigated rice fields into other forms such as housing area, apartments and industrial area have made the agricultural sector shall be worked hard to fullfill the food needs in the midst of the constraints on the area of agriculture which has decreased from year to year, both in terms of the number, area and quality of agricultural land
The purpose of this study was to determine the application of Rice-Shrimp cultivation technology to soil chemical properties, the productivity of rice plants, and the economic feasibility of the farming system compare to the rice monoculture cultivation in irrigated rice fields of Bantul Regency
The productivity of irrigated rice fields by application of rice-shrimp cultivation in Bantul Regency will increase by distibuting the population of shrimp on a certain optimum density (6,000 tails/1,000 m2)
Summary
The transition of productive irrigated rice fields into other forms such as housing area, apartments and industrial area have made the agricultural sector shall be worked hard to fullfill the food needs in the midst of the constraints on the area of agriculture which has decreased from year to year, both in terms of the number, area and quality of agricultural land. The fact that is happening in the field is that the increase in population is not matched by existing agricultural production. This is a challenge for all stakeholders to create an area that is still capable of realizing food security. To achieve food security, the agricultural sector is required to play its role amidst the decreasing land area. New breakthroughs in the agricultural sector include the development of Mina-Padi cultivation technology [2]
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