Population dynamic of Helopeltis antonii sign. on cashew

英语. Research on the population dynamic of Helopeltis antonii Sign. on cashew plantation was implemented in Wonogiri District, Central Java, from July 1996 to December 1998. The research was carried out using survey method on cashew plantation aged 6-10 years. The survey was conducted using two systematic samplings with the sample size of 30 plants. Observation was done twice a month on several parameters such as nymph and imago of H. antonii, predator, other insects, rainfall and humidity. To facilitate the observation, the plant canopy was divided into 3 parts i.e. upper, middle and lower parts. The result of the research showed that the fluctuation of H. antonii population was determined by the fluctuation of predator and humidity. It was indicated that predators are potential to be developed as one of the IPM components

印度尼西亚. Penelitian dinamika populasi hama Helopeltis antonii Sign, pada pertanaman jambu mente telah dilaksanakan di Kabupaten Wonogiri, Jawa Tengah dari Bulan Juli 1996 sampai dengan Desember 1998. Penelitian dilaksanakan dengan metode survei pada pertanaman jambu mente yang berumur 6-10 tahun. Penarikan contoh menggunakan metode sistematik dua arah dengan jumlah contoh 30 tanaman. Pengamatan dilaksanakan dua kali satu bulan terhadap nimfa dan imago H. antonii, predator, serangga lainnya, curah hujan, dan kelembaban udara. Untuk memudahkan pengamatan, tajuk tanaman dibagi menjadi tiga yaitu bagian atas, tengah, dan bawah. Hasil penelitian menunjukkan bahwa fluktuasi populasi H. antonii ditentukan oleh fluktuasi predator dan kelembaban. Hal ini memberikan indikasi bahwa predator mempunyai potensi untuk dikembangkan sebagai salah satu komponen PHT