KISARAN INANG DAN DINAMIKA POPULASI Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) DI PERTANAMAN CABAI MERAH

Abstract

The study of host range and population dynamic of B. tabaci in red chili pepper fiel dswas conducted in Sub-district of Pakem, District of Sleman, Province of Daerah Istimewa Yogyakarta during dry season of May-October 2009. The study of host plants of B. tabaci from the red chili pepper fields revealed that there were 27 species of host plants belong to 22 genera of 13 families including crops and weeds. The host plants belong to families of Araceae, Amaranthaceae, Asteraceae, Brassicaceae, Capparidaceae, Convolvulaceae, Euphorbiaceae, Lamiaceae, Oxalidaceae, Papilionaceae, Rubiaceae, Solanaceae and Sterculiaceae. The host plant families of Asteraceae and Euphorbiaceae had the most abundant population of B. tabaci. Geminivirus-like symptoms were found in the weeds of A. conyzoides and A. boehmerioides. Population of B. tabaci adults correlated with abundance of host plant species found in the red chili pepper fields. The population of B. tabaci in red chili pepper fields was affected by natural enemy population. Population dynamic of the parasitoid Eretmocerus sp. correlated with population dynamic of the parasitized nymph of B. tabaci. Parasitoid Eretmocerus sp. was potentially good in controlling population of B. tabaci nymph in red chili pepper fields.

The Primary Inoculum Sources in the Epidemiology of Pepper Yellow Leaf Curl Indonesia Virus on Chili Plants

“…Weekly observations were conducted to determine the vector population, disease incidence, and disease severity on each cultivar. Vector populations were assessed by observing three leaves per plant (Hendrival et al, 2011;Nasruddin et al, 2020). The leaves were turned slowly and then counted all adults present.…”

“…For whitefly population assessment, from each replication plot, three plants were randomly selected. From each plant sample, three leaves were randomly selected, one from each canopy stratum, lower, middle, and upper (Hendrival et al, 2011). Adults were counted in the field, while eggs and nymphs were counted under a dissecting microscope as explained before.…”

Pengenalan dan pengendalian hama dan penyakit utama tanaman cabai di Desa Sungai Geringging Kecamatan Kampar Kiri Kabupaten Kampar

“…Kutu daun Myzus persicae berperan sebagai vektor penyakit virus Potato Leaf Roll Virus (PLRV) dan Potato Virus Y (PVY) (Parcaya, 2003). Serangan hama kutu kebul (Bemisia tabaci) menyerang bagian daun dengan cara menghisap cairan yang ada pada daun dan menularkan virus Cowpea Mild Mottle Virus (CPMMV), virus gemini, virus mosaic dan virus penyakit kuning, sehingga tanaman akan terhambat pertumbuhannya cenderung kerdil, keriting, menguning, tunas dan cabang tidak berkembang dan tanaman produktivitas menurun bahkan gagal panen (Hendrival et al, 2011).…”