Brown Plant Hopper and Blast Disease in several varieties of rain-fed rice in Gunungkidul Yogyakarta
Kiki Yolanda and Arlyna B. Pustika

1Assessment Institute of Agricultural Technology of Yogyakarta, Jl. Stadion Maguwoharjo No. 22 Ngemplak, Sleman, DI Yogyakarta, Indonesia.

Abstract

There is a challenge to increase the productivity of rain-fed rice in Gunungkidul Yogyakarta. Improvement varieties are suggested increase rice yield. However, brown plant hopper and blast disease are the main constraint in Gunungkidul rain-fed rice area. 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, September 2018 to January 2019. Experimental design was randomized block design with 6 treatments and 4 replications. Treatments were six rain-fed rice varieties (Inpago 8, Inpago 10, Inpago 12, Inpago Unsoed, Rindang 1, and Rindang 2). 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, and Rindang 2 were 6.20, 7.37, 7.01, 7.49, 6.20, and 6.84 ton ha-1, respectively. Varieties improvement resulted higher rice productivity compared to previous season in farmers practices which produced 4.00 ton ha-1 harvested rice.

Keywords: Rain-fed rice, brown plant hopper, blast disease, improvement varieties.

Topic: Agricultural Environment, Ecology and Resources