Abstract
Oryctes rhinoceros beetle is one of the pests that attacksimmature oil palm plants.This pest attacks oil palm plants in larvae or imago phase. This pest is usually damaging the respiratory roots, trunk bark, dry petiole,or periphery crown of oil palm leaves which can interferes the leaf growth and finally reduce the production even collapse the tree. Chemically pest control have the positive impact with faster pest death beside the negative impacts such as resistance, resurgence, disturbing human health and also environmental and ecosystem pollution. Biological control is one alternative pest control that is safe for the environment and can reduce chemical residues in agricultural products and environment. This study was conducted in Medan Denai district on July – Agustus 2019. This study aimed to determine the effect of the use of Beauveria bassiana and palm oil mill effluent to control Oryctes rhinoceros larvae. The method used in this study is a two factorial randomized block design (RBD), with 2 replications. The results of this study showed that the best density of Beauveria bassiana spores in controlling Oryctes rhinoceros larvae was 109 spores / ml and 50ml LCPKS (I2Q2) with death time of 40 hours, daily mortality 60%, total mortality 100%.
Highlights
Oryctes rhinoceros beetle is one of the pests that attacksimmature oil palm plants.This pest attacks oil palm plants in larvae or imago phase
The results of this study showed that the best density of Beauveria bassiana spores in controlling Oryctes rhinoceros larvae was 109 spores / ml and 50ml LCPKS (I2Q2) with death time of 40 hours, daily mortality 60%, total mortality 100%
Enkapsulasi propagul jamur entomopatogen Beauveria bassiana menggunakan alginate dan pati jagung sebagai produk mikoinsektisida
Summary
Hasil pengamatan menunjukkan terjadi perubahan tingkah laku larva O. rhinoceros setelah dilakukan aplikasiB. Perubahan tingkah laku yang terjadi pada larva setelah 2 hari aplikasi yaitu pergerakan mulai melambat dan aktifitas makan mulai menurun. Penurunan nafsu makan pada larva disebabkan oleh terganggunya jaringan tubuh O. rhinoceros akibat toksisitas spora yang menyebabkan kerusakan saluran pencernaan, sistem pernafasan sehingga nafsu makan larvaO. Hal ini sesuai pernyataan Priyanti (2009) bahwa ciri perilaku yang terjadi dikenal sebagai summit disease
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