Male inflorescences, natural enemies, and climate as biotic and abiotic factors on population Elaeidobius kamerunicus at three soil types

Abstract

Pollination determines pollinating weevils in oil palm. Abiotic and biotic factors can influence population pollinator weevils. An experiment was carried out in PT. Sawit Sumbermas Sarana, Tbk. The object of research is to analyze the influence of male inflorescences, natural enemies, and climate on pollinating weevils population at clay, sandy, and peat soil types. The research method used a sampling design. Observation variables were conducted every two weeks for the availability of anthesis male inflorescences, natural enemies, and climate. Davis Vantage Pro 2 was used to measure the climate. The results showed the population of pollinator weevils was significant (p<0.05) influence on male inflorescence. The anthesis male inflorescence per ha increases as the population of pollinator weevil increases. Climate and natural enemies such as Rattus sp., Gasterachanta sp., Argiope sp., Sycanus sp., and Cosmolestes sp., have insignificant influences on pollinating weevils population. Male inflorescence was biotic factor as the source of food for pollinator weevils on clay, sandy, and peat soil types.