Tingkat Kerusakan Beberapa Varietas Tanaman Jagung (Zea Mays) Yang Diserang Hama Ulat Grayak

Ulat grayak Spodoptera frugiperda yang dikenal dengan nama Fall Armyworm (FAW) merupakan hama asli daerah tropis dari Amerika, namun pada bulan Maret 2019 hama ini telah masuk dan menyerang pertanaman jagung yang ada di Indonesia. Penelitian ini bertujuan untuk mengetahui tingkat kerusakan beberapa varietas tanaman jagung (Zea mays) yang diserang hama ulat grayak (Spodoptera frugiperda J.E. Smith). Lokasi penelitian dilakukan di Laboratorium Hama Balai Pengkajian Teknologi Pertanian Kota Jambi selama bulan Juli 2019 hingga Agustus 2019. Bahan yang digunakan yaitu tanaman jagung varietas Nasa 29, Bisi 2, Srikandi Kuning, Sukmaraga, Bisma, dan Lamuru umur 2 minggu setelah semai. Larva FAW instar 3. Penelitian dilakukan dengan menggunakan metode Rancangan Acak Lengkap (RAL) dengan 6 perlakuan dan 3 ulangan. Setiap varietas tanaman jagung diinfestasikan 1 larva dan diamati tingkat kerusakannya setiap hari selama larva berada pada fase instar 3. Hasil penelitian kerusakan tanaman jagung pada semua varietas yang diinfestasi ulat grayak S. frugiperda menunjukkan tidak berpengaruh nyata, namun pada jagung varietas Bisi 2 menyebabkan kerusakan paling parah dibandingkan dengan varietas lain dengan tingkat kerusakan sebesar 49,13 %. Varietas Srikandi Kuning memiliki persentase kerusakan 38,06%, Nasa 29 sebesar 28,99 %, Bisma sebesar 28,90%, Lamuru sebesar 38,58% dan varietas yang persentase kerusakan terendah adalah Sukmaraga dengan 27,51%

Utilization of water resources that are environmentally and Community-Based

Water is the source of life for all living things. In addition to fulfilling raw water,water is also needed for irrigation, power generation, agricultural, livestock,fisheries and industrial cultivation. increase in population, increase in the need forclean water according to established quality standards. On the other hand, themore the population, the more land will be transferred to various destinations thatdamage the watershed area. So, it is necessary to make efforts to utilize waterresources that are environmentally sound. This study aims to see the effect ofwater quality on people’s living habits in the watershed environment.This research was carried out in the Citarum river area and various irrigationchannels by interviewing, directly observing people's living habits, and looking atwaste production data issued by environmental agencies. The results showed thatthe quality of Citarum river water was heavily polluted not only because of thelack of understanding and ignorance of the community in a healthy watershedenvironment, but also because of the lack of adequate socialization of the healthyway of life from the authoritie

Keanekaragaman Species dan Struktur Komunitas Serangga di Area Reklamasi Bekas Tambang Batubara di Kabupaten Muaro Jambi, Provinsi Jambi

Rubiana et al, 2018. Species Diversity and Community Structure of Insect in the Former Area of Coal Mining Reclamation in Muaro Jambi District, Jambi Province. JLSO 7(1):37-42. Recovery of land and ecosystems in the form of reclamation is expected to restore lost biodiversity. The success of reclamation can be seen from the recovery of ecosystems and biodiversity in it. However, the study of biodiversity on reclaimed land in Indonesia is still limited to vegetation and has not seen groups of animals especially insects. Insects have a very important functional role in the ecosystem, therefore they can be used as objects of diversity studies in the reclamation area. This study aimed to study the diversity and functional role of insects in the reclamation area. The study was conducted in the reclamation area of a former coal mine in Muaro Jambi Regency. The study area consisted of two different revegetation ages and two different plants. The method of insect collection is by installing pitfall traps with five replications for 2 x 24 hours. The insects were collected from the pitfall trap then identified to the morphospecies level. The results showed that most of the Coleoptera, Diptera, Hymenoptera and Othroptera insects were found in the reclamation area. Insect diversity is influenced by the age of reclamation. One year of reclamation had a lower species than insect age of two years. Based on the results of the analysis show that the composition of insect species showed differences at different reclamation ages. The older the age of reclamation, the composition of insect species tended to resemble the composition of insect species in the forest

Keanekaragaman dan Kelimpahan Arhtropoda Tanah pada Lahan Cabai dengan Perlakuan Bioremediasi

The level of contaminants in the land can be reduced by remediation. Remediation allows to destroy or makes contaminants into harmless using natural biological activities (bioremediation). Land conditions before and after bioremediation treatment is uses some kind of arthropods land as an indicator of soil fertility. This study aims to assess the factors affect diversity, compare the structural similarity, and species composition of soil arthropods as bioindicators of the recovery of soil biological properties in Chili cultivation. Soil arthropod sampling was carried out on Chili farmers' fields with 5 bioremediation treatments in Sangir Tengah Village, Kayu Aro District, Kerinci Regency, Jambi Province with the pitfall trap method that was installed for 2 nights. The bioremediation treatments were control (without bioremediation), and 4 bioremediation treatments (trichocompos 10 tons/ha, trichocompos + bagasse biochar at a dose of 2 tons/ha, trichocompos + corncob biochar at a dose of 2 tons/ha, and trichocompos + rice husk biochar at a dose of 2 tons/ha. The results showed that there were 9,712 individuals belonging to 10 orders and 28 species of soil arthropods. The diversity of soil arthropods in the bioremediation treatment showed significant differences (R = 0.3953; P < 0.001). The Shannon-Wiener diversity index was highest in the control land as well as the evenness index (E) which means that the bioremediation treatment had no effect on the diversity of soil arthropods. Bioremediation treatment on Chili fields did not show an increase in the number of orders and species

Peningkatan Kapasitas Peternak di Desa Lolotuara Kecamatan Pulau Lakor

Increasing the capacity of farmers in an effort to increase livestock production is important, because with the increasing capacity of farmers, increasing livestock productivity will be easier to obtain. The implementation of Community Service was carried out in Lolotuara Village, Pulau Lakor Subdistrict in July 2022, participants in the extension for increasing the capacity of farmers were attended by villages, village officials and the livestock community. The results of the implementation of the extension in Lolotuara Village, Pulau Lakor Subdistrict, which was attended by the village head, village officials and the farmer community, gave quite positive results because the PKM team was well received and during the counseling process the participants asked many questions so that the farmers were able to understand a good livestock business improvement system

Land-use choices follow profitability at the expense of ecological functions in Indonesian smallholder landscapes

Smallholder-dominated agricultural mosaic landscapes are highlighted as model production systems that deliver both economic and ecological goods in tropical agricultural landscapes, but trade-offs underlying current land-use dynamics are poorly known. Here, using the most comprehensive quantification of land-use change and associated bundles of ecosystem functions, services and economic benefits to date, we show that Indonesian smallholders predominantly choose farm portfolios with high economic productivity but low ecological value. The more profitable oil palm and rubber monocultures replace forests and agroforests critical for maintaining above- and below-ground ecological functions and the diversity of most taxa. Between the monocultures, the higher economic performance of oil palm over rubber comes with the reliance on fertilizer inputs and with increased nutrient leaching losses. Strategies to achieve an ecological-economic balance and a sustainable management of tropical smallholder landscapes must be prioritized to avoid further environmental degradation.12 page(s