Abstract
One component of integrated rat management in rice fields is barn owl as biological control. The study was conducted to evaluate the occupancy rate of barn owl nest boxes, the local rat population, and rat damage to rice crops. It was conducted in three locations in Yogyakarta by observing 10 nest boxes per site. Assessment of their occupancy was monitored by barn owl presence in nest box (egg, chick, and adult) and natural nests in villages nearby. In comparison with control village, the local rat population was observed by the active burrow count method and linear trap barrier systems. Rat damage intensity is estimated by sampling 150 tillers using a stratified sampling approach. The result indicated that 1-4 nest boxes were occupied per location. The owls also nested within buildings nearby. Active burrows ranged from 4 to 25 burrows per 150 m. The rat damage area ranged from 33.33% - 48.57% with 6.33% - 14.86% damage intensity was significantly lower than the control site. Artificial nest box installation for owls in rice fields were only occupied for breeding. The use of barn owls for biological control of rice field rats should be combined with other methods in an integrated approach.
Highlights
Rice field rat Rattus argentiventer is the main Pusat Data dan Sistem Informasi Pertanian, pest causing serious damage to the rice field in 2015), without considering losses due to nursery Indonesia
The existence of Rubuha that was once inhabited in the previous this barn owl is expected to be a biological control season can be identified by the presence of dirt agent of rice field rats
The results showed that the be followed by the breed rate and the maximum ability to prey from the barn owls
Summary
Rice field rat Rattus argentiventer is the main Pusat Data dan Sistem Informasi Pertanian, pest causing serious damage to the rice field in 2015), without considering losses due to nursery Indonesia. In 2019 Yogyakarta farmers ing stages of rice plants from seedlings to harvest, control rice field rats in 19,525 ha area using the even causing postharvest damage in the storage various method. In Indonesia efforts birds as effective predators which prey on rodents to control rats with the release of barn owls in and other small mammals Barn owls are the most effective natural Central Java, East Java, and Yogyakarta (DIY), but predators to control rice field rats The active way with rats as the main prey and some effectiveness of barn owl release and the installation alternative prey such as bats, birds, insects, frogs, of its shelter (rubuha) in rice fields in DIY has never snakes, fish, lizards, geckos, and others.
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