The black twig borer (Xylosandrus compactus) is a major pest that significantly reduces coffee yield, while also surviving on other plant species. The hole-boring process causes the branch tips to wilt. Turn yellow and then eventually die. This study aimed to quantify the intensity and extent of black twig borer infestation, to explore the potential natural enemies of black twig borer that are available in the field, and to examine other pests in coffee garden across two different systems; simple shade coffee with legume as shading (16 plot samples) and multistrata coffee with fruit tree, timber tree and legume as shading (16 plot samples). The study ran out from July to August 2005. The data were analyzed with analysis of variance (anova) and t-tests.The fraction of branches infected by black twig borer was significantly lower in multistrata coffee (18%) than in simple shade coffee (25%). The difference in the fraction of trees infected (75 and 55% respectively) was not statistically significant. In both systems the upper branches had more infection holes than the middle and lower ones.
Publication year
2006
Authors
Rahayu, S.; Setiawan, A.; Husaeni, E.A.; Suyanto, S.
Language
Indonesian
Keywords
agroforestry, biological control, case studies, pests, coffee
Geographic
Indonesia
