POPULASI DAN INTENSITAS SERANGAN HAMA WALANG SANGIT (Leptocorisaoratorius) PADA BEBERAPA VARIETAS TANAMAN PADI SAWAH DI DESA TOLOTOYON KABUPATEN BOLAANG MONGONDOW SELATAN

Abstract

ABSTRAK

The research aims to find out: (1). The population of walang sangit pest in several rice varieties in
Tolotoyon village, Bolaang Mongondow Selatan Regency; (2). pest attack wit sangit on several
varieties of rice in the village Tolotoyon Bolaang Mongondow Regency.The study was carried out
in a rice-growing area owned by farmers in Tolotoyon Village, Bolaang Mongondow Selatan
Regency. The duration of the study is 3 (three) months, from December 2019 to February 2020.
Bandage using Random Group Design (RAK) with the treatment of rice plant varieties, namely
Ciherang, Inpari 9, and Situ bagendiT and repeated three times. The research was conducted at
three locations, each measuring approximately one (1) hectare. Each location planted one variety.
Sampling was conducted three (3) times. Sampling is carried out on plants that are ten weeks old
with a retrieval interval of one (1) week. Parameter the number of nymphs and image caught.
Observation of the intensity of pest attacks is carried out visually based on the symptoms of
Walang Sangit attack on the malaise of rice crops. Observations are made on generative phase rice
plants. Parameter the number of malaises affected. The results showed that the highest walang
sangit pest population was found in the Ciherang variety of 6.8 Walang Sangits, followed by Inpari
9 which is 5.6 Walang Sangits and the lowest in Situ bagendit which is 3.1 The yield on walang
sangit pest attacks on inpari varieties was 7.0 percent, followed by Ciherang 6.1 percent, while
Situ Bagendit 3.1 percent.The difference in population and intensity of Walang Sangit pest attacks
on some varieties of rice crops, caused by the character of rice crops, such as the number of shoots
and the color of grain.
Keywords : Rice varieties,Leptocorisa Oratorius, population, and intensity