Intensitas Serangan Wereng Batang Coklat (Nilaparvata lugens) Pada Beberapa Varietas Tanaman Padi di Kecamatan Kedungadem Kabupaten Bojonegoro

Rice (Oryza sativa L) is a food crop that used as staple source and an agricultural product has strategic economic role in Indonesia. Bojonegoro one of the districts barn East Java Province. One things can result decreased rice production attack Plant Pest Organisms (OPT). pests cause attacks damage to plants brown planthopper pest (Nilaparvata lugens). example Regency located Kedungadem District. The problems arise due leafhopper on plants, need know bioecology their population density, so facilitate proper prevention control measures, does not cross threshold. This study aims determine intensity by lugens) several varieties District, Regency. method direct observation every 1 week starting from WAP 12 MST counting found field. villages were Jamberejo Village Sidomulyo with 6 plots land each village. In village, 3 samples Ciherang variety fields Inpari 32 taken. he highest Villages was 7 variety, respectively 21%, 17%, 13% while lowest 0%.