Pests of star fruit in Blitar District, East Java. Pest attack causes the production of star fruit decreases. This study aim was to identify the pests of star fruit in Blitar District which could provide an information about pest species, damage symptoms and damage intensity. The research was conducted during August -September 2014 in Gogodeso, Karangsono and Pojok Villages at Blitar District, East Java. Observations of the pests ware done by determining the four locations of plantation on each villages randomly. Three plants sample were choosen in each plantation location diagonally. Each plant was divided into four quadrant according to wind directions. One branch in the bottom was choosen in each quadrant. Nine species were recorded as pests of starfruit in Blitar district. Pest was identified on the leaf was Pteroma plagiophleps, on the branch was Zeuzera coffeae, on the flower were Toxoptera aurantii and Maconellicoccus hirsutus, whereas those on the fruit were Toxoptera aurantii, Maconellicoccus hirsutus, Thrips javanicus, Helopeltis bradyi, Cryptophlebia leucotreta, Bactrocera dorsalis, and Bactrocera carambolae. The population density of M. hirsutus was higher in Karangsono than in other villages. The highest damage intensity was caused by Bactrocera spp., C. leucotreta and H. bradyi (occured in Gogodeso), whereas the highest damage intensity of T. javanicus occurred in Pojok.Key words : damage intensity, density, pest, star fruit
ABSTRAKHama tanaman belimbing di wilayah Kabupaten Blitar, Jawa Timur. Serangan hama mengakibatkan penurunan produksi buah belimbing. Tujuan penelitian ini adalah untuk mengidentifikasi serangga hama tanaman belimbing di wilayah Kabupaten Blitar yang dapat menyediakan informasi tentang jenis serangga, gejala kerusakan dan intensitas kerusakan. Penelitian dilaksanakan pada bulan Agustus -September 2014 di Desa Karangsono, Gogodeso, dan Pojok, Kabupaten Blitar, Jawa Timur. Pengamatan hama dilakukan dengan menentukan empat lokasi pertanaman pada tiap desa secara acak. Tiga tanaman sampel dipilih pada tiap lokasi pertanaman secara diagonal. Setiap tanaman dibagi menjadi empat kuadran sesuai arah mata angin. Satu cabang paling bawah dipilih pada setiap kuadran. Sembilan jenis hama belimbing ditemukan di Kabupaten Blitar. Hama yang teridentifikasi pada daun adalah Pteroma plagiophleps, pada cabang adalah Zeuzera coffeae, pada bunga yaitu Toxoptera aurantii dan Maconellicoccus hirsutus, sedangkan pada buah yaitu Toxoptera aurantii, Maconellicoccus hirsutus, Thrips javanicus, Helopeltis bradyi, Cryptophlebia leucotreta, Bactrocera dorsalis, dan Bactrocera carambolae. Kepadatan populasi M. hirsutus tinggi di desa Karangsono dibandingkan dengan desa lainnya. Intensitas kerusakan tertinggi yang diakibatkan oleh Bactrocera spp., C. leucotreta, dan H. bradyi terjadi di Desa Gogodeso, sedangkan intensitas kerusakan tertinggi T. javanicus terjadi di Desa Pojok.Kata kunci : belimbing, hama, intensitas kerusakan, kepadatan populasi
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