Keragaman Dan Kemelimpahan Collembola Serta Arthropoda Tanah Di Lahan Sawah Organik Dan Konvensional Pada Masa Bera

The diversity and abundance of Collembola and soil arthropods in organic and conventional lowland field at fallow time. As ecosystem components, Collembola and arthropods are important in keeping the ecosystem stability. Beside its role as the decomposer, Collembola also takes part as the alternative food for arthropod predators. This research was aimed to gather information on the diversity and abundance of Collembola and arthropods in organic and conventional lowland field at fallow time. The sampling was done using pitfall trap and Berlese funnel. The results showed that: (1) the abundance of Collembola in organic lowland field was higher than that of in the conventional lowland field but the diversity of Collembola in the organic lowland field was not different from that of in the conventional field; (2) Entomobryidae was the family with the highest abundance; and (3) the diversity and abundance of soil arthropods were relatively greater in organic lowland field than that of in the conventional lowland

Inventarisasi Parasitoid Hama Penggulung Daun Pisang (Erionota Thrax L.) Di Kota Metro Dan Sekitarnya Provinsi Lampung

Kota Metro merupakan salah satu daerah penghasil pisang di Provinsi Lampung, dan mempunyai potensi yang menjanjikan apabila dikembangkan secara maksimal. Dalam budidaya tanaman pisang banyak faktor yang dapat menjadi kendala, diantaranya adalah serangan hama. Salah satu hama yang sering menyerang tanaman pisang adalah hama penggulung daun pisang (Erionota thrax L). Saat ini pengendalian organisme pengganggu tanaman (opt) yang ramah lingkungan terus dikembangkan, antara lain adalah dengan memanfaatkan musuh alami dalam penerapan pengendalian hayati. Penelitian ini bertujuan untukmenginventarisasi parasitoid hama penggulung daun pisang (E. thrax) serta menghitung persentase parasitasinya di Kota Metro dan sekitarnya, Provinsi Lampung. Pada penelitian ini digunakan metode survei lapang dengan mengambil sampel hama pada 4 kecamatan dengan tiap kecamatan diambil 2 desa pengamatan. Hasil penelitian yang didapat adalah ditemukannya berbagai jenis parasitoid di Kota Metro dan sekitarnya yaitu Brachymeria sp., Xanthopimpla sp. dan Famili Tachinidae.Tingkat parasitasi berbagai jenis parasitoid tertinggi ditemukan di Kecamatan Metro Pusat sebesar 25 %

The White-bellied Planthopper (Hemiptera: Delphacidae) Infesting Corn Plants in South Lampung, Indonesia

The White-Bellied Planthopper (Hemiptera: Delphacidae) Infesting Corn Plants in South Lampung, Indonesia. Corn plants in South Lampung were infested by newly-found delphacid planthoppers. The planthopper specimens were collected from heavily-infested corn fields in Natar area, South Lampung. We identified the specimens as the white-bellied planthopper Stenocranus pacificus Kirkaldy (Hemiptera: Delphacidae), and reported their field population abundance