Neraca Kehidupan Kutukebul Bemisia Tabaci (Gennadius) (Hemiptera: Aleyrodidae) Pada Tanaman Cabai Dan Gulma Babadotan Pada Suhu 25 °C Dan 29 °C

Bemisia tabaci (Gennadius) is an important pest on horticultural crops that can also become a vector of Geminivirus that transmit the yellow curl disease. B. tabaci can also attack weeds that grow around the field such as Ageratum conyzoides or goatweed. The objective of this research was to study the life cycle, life time, fecundity, and reproduction rate of B. tabaci on Chili pepper and goatweed. The experiment was conducted by observing the development of 50 eggs into adulthood. All 50 eggs were put on one plant and repeated 3 times. The plants were grown at temperatures 25 °C and 29 °C inside growth chamber (L : D = 12 : 12). The result of this experiments showed that at both temperatures of 25 °C and 29 °C, reproductive rate (R0), intrinsic rate of increase (r) and fecundity of B. tabaci were higher on goatweed than Chili pepper. This implies that the existence of goatweed around Chili pepper in the field can serve as a good alternative host for B. tabaci, hereby supporting the pest population even further

Trips (Thysanoptera: Thripidae) Yang Berasosiasi Dengan Tanaman Hortikultura Di Jawa Barat Dan Kunci Identifikasi Jenis

Most of thrips from Thripidae family are pests on horticultural crops. To date, there are no records in the species richness of thrips in horticultural crops. The aim of the research is to conduct inventory on thrips spp diversity that are associated with horticultural crops in West Java. Sampling were done in several horticultural crops areas in Bogor, Cianjur, and Lembang (West Bandung). The identification process began with sample slide preparations along with the documentation of the character from each species. The identification was done mainly by using the identification program Oztrips and some other published identification keys. Identification key was built based on diagnosis characters of each species. The results found there were 15 species, that are Ceratothripoides brunneus, C. revelatus, Frankliniella intonsa, Megalurothrips typicus, M. usitatus, Scirtothrips dorsalis, Thrips aspinus, T. coloratus, T. hawaiiensis, T. javanicus, T. malloti, T. palmi, T. parvispinus, T. sumatrensis, and T. unispinus. T. aspinus and C. revelatus were new record for Indonesia

Intensitas Serangan Spodoptera Frugiperda J.E. Smith (Lepidoptera: Noctuidae) pada Pertanaman Jagung di Kabupaten Garut dan Tasikmalaya, Jawa Barat

The presence of Spodoptera frugiperda J.E. Smith or fall armyworm (FAW) have now detected in West Java. However, no information is available on their attack intensity even though the data is crucial for the implementation of appropriate control methods. The investigations were carried out in Garut (Limbangan, Wanaraja, dan Banyuresmi) and Tasikmalaya (Sukaratu) Regencies from 25 to 27 February 2020. At each location, 100 plants were selected for recording observations on leaf damage following the Davis Scale. The results showed the attack intensity in Wanaraja (34,78%), Banyuresmi (34.78%), and Sukaratu (39.89%) showed moderate damage. On the other hand, Limbangan one of the corn production center, showed high damage with the intensity of the pest up to 52.78%. The attack intensity of FAW tends to correlate with their attack level. This means that plant damage levels increasing at higher attack levels