In the Banaue rice terraces, we monitored the rice arthropod dynamics in a rice trap crop planted inside (1) a trap barrier system (TBS + TC), (2) surrounding rice crops 25, 50, 100, 200, and 400 m away from the TBS + TC setup, and (3) those grown in areas farther away (> 1,000 m) and where the TBS + TC system was not introduced.
Rice is planted once a year in Banaue, with seeds sown on seedbeds in late November and December. The area is planted to Lacoop, which is a photoperiodsensitive traditional rice variety with 6-mo maturity. Lacoop was also planted inside the TBS 1 mo in advance of the farmers’ main crop. One of each TBS + TC setup was strategically established in terraced fields adjacent to the farmers’ residences, creeks, and forest on 21 Dec 2002. This was done to lure rats from possible source habitats to the TBS + TC early in the rice cropping season, thereby reducing the number of breeding rats in the main season.