Improving Rice Productivity and Farmers' Incomes in South Sumatra Province with Superior Varieties and Jarwo 2:1

Rice has become the government’s focus to sustainably increase productivity. The applicable technological innovation to intensively increase rice productivity and farmers’ income is using superior varieties and the jarwo spacing system. This study determines the productivity of some rice superior varieties by applying a jarwo 2:1 in irrigated paddy fields. The research lasted from April to August 2021 on a farmer’s paddy field in Musi Rawas Regency, South Sumatra. The oversite design research involved 5 replications. The applied tested factors were: 1) superior variety implementation (Inpari 22, 32, and IR Nutri Zinc) and 2) the planted spacing (tiles 25 x 25 cm2, and jarwo 2:1). The results showed an increment in the superior varieties of rice productivity using the jarwo 2:1 with a percentage of 38.8% for Inpari IR Nutri Zinc, a percentage of 31.5% for Inpari 32, and a percentage of 32.8% for Inpari 22. The jarwo 2:1 was more profitable than tiles, observable on 3.2 R/C ratio value and 3.5 MBCR value. Therefore, the jarwo 2:1 is very feasible to be widely developed in irrigated paddy fields. Keywords: productivity, cultivation, IR nutri zinc, Jarwo