Aktivitas Anti Makan Ekstrak Daun Sirsak (Annona Muricata L.) Dan Pengaruhnya Terhadap Indeks Nutrisi Serta Terhadap Struktur Membran Peritrofik Larva Instar v Spodoptera Litura F.

Abstract

Antifeeding activity of soursop leaf extract (Annona muricata L.) and its effect on nutrition indices and the microscopic structure of peritrophic membrane of the fifth-instar larvae of Spodoptera litura F. were studied. Antifeeding test was conducted by choice method. Discs of caisin leaf were dipped into the ether fraction of soursop leaf extract with concentrations of 0; 0.63; 2.50; and 10.00%. Nutrition indices and peritrophic membrane structure were observed by giving fifth-instar larvae one of the five diets, every group of diet was added to various concentrations of the ether fraction of soursop leaf extract, containing either 0; 0.63; 1.25; 2.50; and 5.00%. The result showed that soursop leaf extract had antifeeding activity at tested concentration 2.50%. Relative consumption rate (RCR), relative growth rate (RGR), and efficiency of conversion of ingested food (ECI) were significantly lower in the case of treated larvae than that of the controls. However the efficiency of conversion of digested food (ECD), approximate digestibility (AD), and peritrophic membrane structure treated with soursop leaf extract were not significantly affected as compared to those in controls.

Amethyst leaf extract as pest control and fertilizer for soybean plants

“…There is no standard limit regarding the concentration of an effective test solution for compounds that are antifungal. A plant has effective anti-feeding properties when the level of food inhibition reaches 80-100% (Ambarningrum et al 2012). However, statistical data illustrate that the differences in concentration and type of test solution from the extracts did not provide a significant difference in the antifungal activity, as evidenced by the F values which are smaller than the F crit shown in Table 1.…”

Study of Integrated Pest Management Strategy on The Population of Fruit Flies (Bactrocera spp.) in Red Chili Cultivation (Capsicum Annuum)

“…Soursop leaves contain acetogenin compounds, including asimycin, roundacin, and squamosin, which function as pest repellents and anti-food items [17]. Soursop leaf extracts starting at a concentration of 2.5% have anti-eating activity and reduce the relative consumption rate and the relative growth rate of S. litura instar V [18].…”

Uji Konsentrasi Ekstrak Kulit Buah Jengkol Terhadap Ulat Grayak Spodoptera litura di Laboratorium

“…Hingga kini pengendalian S. litura ditingkat petani umumnya masih mengandalkan insektisida sintetik, hal ini kurang efektif karena timbulnya resistensi hama, resurgensi hama dan peledakan hama sekunder serta dampak negatif terhadap lingkungan sekitarnya (Ambarningrum et al, 2012).…”