Judul: Pengaruh lama penyimpanan berbagai formulasi cendawan entomopatogen Lecanicillium lecanii terhadap telur hama penghisap polong kedelai Riptortus linearis L. (Hemiptera: Alydidae)
Abstrak: The entomopathogenic fungi Lecanicillium lecanii is currently being developed as mycoinsecticide to control the soybean pod sucking bug Riptortus linearis. In the field, without treated in formulation, this bioinsecticide is often unstable. To maintain the viability and infectivity, the fungi must be formulated by adding certain additives. The aim of the research is to study the viability and infectivity of the fungi after storage in several formulations. The fungi were mixed with (1) talcum powder (2) sweet potato powder (3) cassava powder (4) rice powder (5) corn powder (6) molasses (7) peanut oil (8) soybean oil as treatment and (9) water as control, and stored in the room condition. The viability of the conidia as indicated by germination in water after 10 hours, the growth of fungal colony in 4 to 7 days after being inoculated on PDA media, and infectivity to R. linearis eggs were observed each month during 11 month. The experiment was set in completely randomized design with three replicates. The results show that, the viability and the infectivity of the fungi in all formulations decreased along the storage. On the 11th month of storage the viability decreased to 65% (peanut oil, the lowest) and 87% (cassava powder, the highest). Similarly, the infectivity of the fungi decreased as well, to 47% (talcum powder, the lowest) and 76 % (molasses and cassava powder, the highest).
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Judul: Infektivitas cendawan entomopatogen lecanicillium lecanii terhadap parasitoid telur trichogrammatoidea bactrae bactrae (Hymenoptera:Trichogrammatidae)
Abstrak: Soybean is a high value agriculture’s comodity which can give many benefits. Soybean podborer Etiella zinckenella is one of important soybean pest in Indonesia that can decrease harvest until 80%. The control method using chemical insecticides are difficult to apply because the larva bore into soybean pod. The egg parasitoid Trichogrammatoidea bactrae bactrae can be used as alternative method to control the soybean podborer. On the other hand, on soybean plantation, the entomopathogenic fungus Lecanicillium lecanii is also used to control other soybean pests, especially against soybean pod sucker. The impact of this fungi toward the egg parasitoid T. bactrae bactrae is important to investigate. At conidial density 109/ml, L. lecanii could infect the egg of host Corcyra cephalonica that have been previously infested by parasitoid aged 1 to 6 days of infestation. At age 1 to 3 days post-infestation by parasitoid, there was no parasitoid exit from the egg, where as at age 4 to 8 days post-infestation T. bactrae bactrae adult emerged from the egg of C. Cephalonica. When directed against T. bactrae bactrae adult, spraying of 109conidia/ml killed 100% of tested parasitoid. With conidial density 109/ml, the lethal time 50 (LT50) L. lecanii against T. bactrae bactrae was calculated 4 days.
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Judul: Perencanaan Jalur Hijau Perumnas Kota Baru Driyorejo Gresik, Jawa Timur
Abstrak: Perumnas Kota Baru Driyorejo (KBD) merupakan salah satu alternatif yang ditawarkan Perum Perumnas cabang Driyorejo untuk memenuhi kebutuhan akan pemukiman yang ideal dan layak huni. Perumnas tersebut berupa disain bebas tapi terbatas (open ended design) Lingkungan Siap Bangun (LISIBA) yang merupakan bagian dari Kawasan Siap Bangun (KASIBA), yang pembangunannya saat ini kurang lebih sudah mencapai 80%.
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