Mango is one of the primary fruit export commodities in Indonesia. The productivity of mango can be increased by controlling the pest population, including fruit flies Bactrocera spp. Various efforts to control the population of fruit flies have been carried out, either by implementing traditional methods or by using synthetic pesticides. However, synthetic pesticides can cause pollution, and therefore we need to control the fruit flies’ population by using the most effective fruit fly trap mode. The study was conducted in the mango yield (monoculture) of Department of Agriculture in Majalengka. The traps in this study were modified Steiner traps with funnels, modified Steiner traps without funnels, bottle traps with funnels, bottle traps without funnels, and modified gypsy moth traps. Each trap was fed with 0.2 ml of Methyl eugenol dripped on a cotton roll and hung in the trap. The results showed that the number of fruit flies caught in each trap every week is significantly different. The highest number of fruit flies caught in each trap every week was achieved by bottle traps without funnels that caught 135 flies, while the lowest number of fruit flies caught was recorded by the gypsy moth traps with 16 flies. The transparent color of the bottles and a large number of holes effectively lured the fruit flies into the bottle traps without funnels.

The depth of the pupation is one of the important factors in the success of fruit flies to become imago. The objective of this study was to evaluate the effect of soil depth on survival, normality dan development time of adult interspecific hybrids of Bactrocera carambolae (Drew & Hancock) and B. dorsalis (Hendel). The experiments were carried out in a laboratory consisting of seven depths of pupation treatments (4 cm, 10 cm, 20 cm, 30 cm, 40 cm, 50 cm, and 60 cm) with four replications. Soil depth had a significant, negative effect on the survival of the emergence and development time of B. dorsalis and B. carambolae hybrids. The emergence rate was found to decrease with the increase in pupation depth. The higher survival of the emergence of the hybrid occurred at a depth of 4 cm (95% ± 1.91) and 10 cm (86% ± 2.58), while the lower survival occurred at a depth of 50 cm (12% ± 1.63) and 60 cm (5% ± 3.79). Normal imagoes were found in all soil depths except in 60 cm depth, where all imagoes had abnormal morphology. Means of development time ranged from 8.88 to 10.63 days. The depth of pupation influences the duration of pupae development. The means of development time at a depth of 4–40 cm was similar, but at a depth of 50 cm and 60 cm, a significantly longer time of development were observed. for more effective fruit fly control, this study suggests burying rotten fruit in the soil at a depth of 50 cm or more as a preventive measure for the development of fruit flies.

Lalat buah (Diptera: Tephritidae), Bactrocera cucurbitae (Coquillet) dan Bactrocera dorsalis (Hendel), merupakan hama bersifat polifag dan menjadi penyebab kerugian ekonomi berbagai buah dan sayuran di Indonesia. Tujuan dari penelitian ini adalah untuk mengetahui kisaran inang OPT di Indonesia dan pengaruh berbagai jenis buah-buahan terhadap kemampuan oviposisi dan kelangsungan hidup keturunannya. Metode penelitian menggunakan Choice test dengan menggunakan buah-buahan yang berbeda seperti apel hijau (apel malang), belimbing, pisang, jambu biji dan jeruk. Penelitian dilakukan di Laboratorium Hama Tanaman Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran. Penelitian ini menggunakan dua spesies lalat buah koleksi hasil pemeliharaan Laboratorium Hama Tanaman generasi ke-2. Hasil penelitian menunjukkan bahwa B. cucurbitae dapat berkembang baik pada buah pisang dan belimbing dengan jumlah dewasa 4,25 ± 1,70 / buah dan 7,50 ± 1,90 / buah, sedangkan B. dorsalis pada buah jambu biji dengan jumlah dewasa 14,25 ± 1,55 / buah. Dapat disimpulkan secara keseluruhan B. dorsalis memiliki kisaran inang yang lebih luas dibandingkan B. cucurbitae. Kata kunci: B. cucurbitae, B. dorsalis, preferensi, tanaman inang.

A black rice cultivation study was conducted at Kampung Cinenggang, Cileles Villages, Jatinangor. This research analyzed the effect of organic fertilizer such as siam weed compost and neem cake waste to black rice growth and soil chemicals. The experiment was arranged in randomized block design consisted of five treatments and six replications as follow : neem cake waste , siam weed compost, cow manure, urea were used as the N sources by comparing with no application (control). Overall the result of the study showed that there were no significant differences among treatment in plant growth characters such as plant height and SPAD, except control. In tiller number, the effect of neem cake waste and siam weed compost were significant different if compared with other treatments. Furthermore, the effect of neem cake waste gives a positive effects to soil chemicals which in turn enhanced the growth of black rice. it is recommended that organic fertilizers (neem cake waste and siam weed compost) be utilized instead of chemical fertilizer.