Perbanyakan Phragmatoecia castaneae (Lepidoptera: Cossidae) pada pakan buatan
Dongoran, Erick S.
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Erick S. Dongoran, “Mass Rearing of Phragmatoecia castaneae (Lepidoptera : Cossidae) on Artificial Diets”. Supervised by Maryani Cyccu Tobing and Suzanna Fitriyani Sitepu. P. castaneae is an important stem borer pest has destroyed sugarcane in North Sumatera and is also a host of some parasitoids. This research was to study the biology of P. castaneae on artificial diets and conducted at Sei. Semayang Centre for Research and Development of Sugarcane PTPN II Medan. This research used non factorial Randomized Complete Design using artificial diets of sugarcane shoot powder variety PS 862 8,6 g, mixture of sugarcane stem and shoot powder variety VMC 76-16 4,3:4,3 g and mixture of sugarcane stem and shoot powder variety PS 862 4,3:4,3 g with 10 replications. The results showed that the eggs period was 10-12 days, larval period was > 125 days with 10 instars. 1st instar was 6-10 (± 6,67) days, 2nd instar was 8-14 (± 9,83) days, 3rd instar was 9-18 (± 12,80) days, 4th instar was 10-17 (± 12,40) days, 5th instar was 10-16 (± 12,60) days, 6th instar was 10-18 (± 11,87) days, 7th instar was 12-20 (± 12,47) days, 8th instar was 13-18 (± 12,47) days, 9th instar was 12-18 (±13,4) days, 10th instar was not known. The highest mortality percentage was found on sugarcane shoot powder variety PS 862 8,6g (65%) and the lowest (35%) on mixture of sugarcane stem and shoot powder variety PS 862 4,3:4,3g and also be the best treatment, this showed by the duration of larval stage was significantly faster, and the mortality was lower and the long of larval was longer than the other treatments from 1st instar untill 10th instar.
- SP - Agroekoteknologi