PESTICIDE AFFECTING THE DIVERSITY OF POLLINATOR INSECT IN COCOA PLANTATION (Theobroma cacao L.) Hasriyanty(a*), N Edy(a), Rosmini(a), Jusriadi(a), Mutmainnah(a), Safitri(b), M Pratiwi(b),
a)Departement Agrotechnology, Faculty of Agriculture, Tadulako University, Palu. Indonesia
b)Student at Departement Agrotechnology, Faculty of Agriculture, Tadulako University, Palu. Indonesia
*email: hasriyanty.amran[at]gmail.com
Abstract
Pollinating insects play a very important role in the pollination process of cocoa flowers, because unpollinated cocoa flowers will fall within 24 hours and fail to develop into fruit and seeds, on the other hand the presence of pollinators in cocoa plants is influenced by cultivation techniques such as the use of pesticides to agains pest and disease attacks. This study aims to determine the diversity of pollinating insects in cocoa plantations with and without application of pesticide. The study consisted of field research conducted on cocoa plantations in Rahmat Village, Palolo Sub-district, Sigi Regency. Insect identification was carried out at the Plant Pests and Diseases Laboratory, Faculty of Agriculture, Tadulako University, Palu. Sampling was carried out in 3 plots measuring 40 times 40 rectangle with treatments: application of Chlormit 505 EC insecticide at a dose of 20 ml per 15 L water, Alika 247 ZC insecticide at a dose of 10 ml per 15 L water, and control. In each plot, 10 trees were selected for observation. Insect pollinators and flower visitors were collected using yellow pant traps and by direct observation. The results of this study found 5 species of pollinator insects namely Forcipomyia sp. and Bactrocera sp. from the order Diptera, Lasius niger, Solenopsis invica and Vespidae from the order Hymenoptera and Melantis sp. from the order Lepidoptera. Insecticide application affects pollinating insect diversity.
