Parameter Neraca Hayati dan Pertumbuhan Populasi Kutu Putih Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) pada Dua Varietas Ubi Kayu

Nila Wardani (Balai Pengkajian Teknologi Pertanian Lampung, Jl. ZA. Pagar Alam No. IA, Bandar Lampung)
Aunu Rauf (Departemen Proteksi Tanaman, Fakultas Pertanian, Institut Pertanian Bogor, Kampus IPB-Darmaga, Bogor 16680)
Wayan Winasa (Departemen Proteksi Tanaman, Fakultas Pertanian, Institut Pertanian Bogor, Kampus IPB-Darmaga, Bogor 16680)
Sugeng Santoso (Departemen Proteksi Tanaman, Fakultas Pertanian, Institut Pertanian Bogor, Kampus IPB-Darmaga, Bogor 16680)

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Vol. 14 No. 1 (2014): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

ABSTRACTThe life history and population growth parameters of mealybug Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on two cassava varieties. The development, reproduction, and population growth parameters of the cassava mealybug, Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on two cassava varieties were studied in laboratory. The varieties tested were UJ-5 with high cyanide content (>100 mg per kg) dan Adira-1 with low cyanide content (27.5 mg per kg). Our research revealed that P. manihoti performances were highly affected by cassava varieties. Incubation period of eggs of P. manihoti were 7.93 ± 0.09 and 8.33 ± 0.11 days, nymphal development periode 12.32±0.13 and 15.67 ± 0.13 days, respectively on UJ-5 and Adira-1. Fecundity averaged 386.37 ± 5.83 on UJ-5 and 318.67±2.81 eggs on Adira-1. Intrinsic rate of increase (rm) were 0.258 ± 0.001 on UJ-5 and 0.220 ± 0.001 on Adira-1. Mean generation time (T) on UJ-5 and Adira-1 were 22.795 ± 0.050 and 25.532 ± 0.047 days, repectively. Our findings showed that variety UJ-5 was more suitable for development and population growth of the cassava mealybug.