Brown Plant Hopper and Blast to environmental friendly of rain-fed rice in Yogyakarta

Abstract

Abstract There is a challenge to increase the productivity of rain-fed rice in Yogyakarta. However, brown plant hopper and blast disease are the main constraint. Tolerant varieties are suggested due to its environmental friendly to increase rice yield. This research was aimed to determine the population of brown plant hopper and blast disease as the effect of varieties improvement in increasing rain-fed rice productivity. Research was conducted in Nglipar Gunungkidul Yogyakarta, from September 2018 to January 2019. Experimental design was randomized block design with 6 treatments and 4 replications. The treatments were six rain-fed rice varieties (Inpago 8, Inpago 10, Inpago 12, Inpago Unsoed, Rindang 1, and Rindang 2) with two control varieties (Inpari 42 and Ciherang). Results showed that Brown Plant Hopper population and blast disease intensity in Inpago 10, Inpago 12, and Inpago Unsoed were lower than in other varieties. Yield of Inpago 8, Inpago 10, Inpago 12, Inpago Unsoed, Rindang 1, Rindang 2, Inpari 42 and Ciherang were 6.20, 7.37, 7.01, 7.49, 6.20, 6.84, 6.97, and 4.00 ton ha-1, respectively. Varieties improvement resulted higher rice productivity compared to Ciherang as existing variety in farmers practices.