INTENSITAS SERANGAN HAMA KUMBANG MONCONG PADA AGROFORESTRI AKOR (Acacia auriculiformis)

Abstract

The combination of tree species and agricultural crops in agroforestry systems can affect the type and intensity of attacks by pests and diseases. This study aims to determine incidence level and intensity level of weevil pests in two patterns of akor agroforestry. Observations were made on two akor-based agroforestry patterns: akor (Acacia auriculiformis) + black pigeon pea (Cajanu scajan) + rice (Oryza sativa) (Pattern 1); and akor (A.auriculiformis) + black pigeon pea (C.cajan)+ green bean (Vigna radiata) (Pattern 2). The number of plant samples observed were 30 trees randomly selected in each pattern. The parameters observed were incidence level and intensity level of weevil pest attacks. The observations showed that incidence level of Hypomeces squamosus were 100% in pattern 1 and 96.7% in pattern 2. Intensity level of the H. squamosus weevil in pattern 1 and pattern were 81.06% and 6.21% respectively. The higher intensity of H.squamosus attacks in pattern 1 was due to the presence of rice plants as another host of H. squamosus. Control measures that can be applied include rotation of host plant other than the host plant of H. Squomasus. If a pest population explosion occurs then bio-perticides or chemical pesticides made from active ingredients of acephate, carbaryl or methamidophos can be applied to restore the pest population to the principle of balance.