One type of pest that often attacks soybean plant leaves in tidal swamplands is the armyworm pest. The intensity of leaf damage due to armyworm attack in tidal swamps ranges from 30-95%, and can even lead to crop failure. In controlling pests in soybean plants in general, always rely on chemical insecticides. The use of these chemical insecticides has a negative impact on the environment. To overcome this, the control is directed towards environmentally friendly pest control by utilizing swamp plants as a botanical insecticide. The study used a randomized block design (RBD) with 3 treatments of swamp plant extracts (galam, kirinyuh, kepayang) and 3 controls, namely without control, botanical insecticide made from neem, chemical insecticide with the active ingredient kloraniliprol. The aim of this study was to obtain a swamp plant extract that could be used in controlling armyworm pests (Spodoptera litura). The results showed that the three types of swamp plants could be used as botanical insecticides in controlling armyworm pests, and has an effectiveness value above 70%. The highest effectiveness of botanical insecticides was obtained at the age of 75 DAP, namely Galam (78.29%), Kirinyuh (78.86%) and Kepayang (78.85%).

The purpose of this study was to determine the effectiveness of bio insecticide liquid formulations made from indigenous entomopathogens against paddy bugs nymphs. The study used a non-factorial Complete Randomized Design with 9 treatments and 1 control with five replications. The treatments studied consisted of E0: Control, E1: Beauveria sp Pky isolate + coconut water (CW), E2: Metarhizium sp isolate Jjt + AK, E3: Beauveria sp isolate Jts + CW, E4: Metarhizium sp isolate Lcc + CW, E5: Beauveria sp Pky isolate + shrimp shell extract (SSE), E6: Metarhizium sp isolate Jjt + SSE, E7: Beauveria sp isolate Jts + SSE, E8: Metarhizium sp isolate Lcc + SSE, E9: Synthetic insecticide b a Carbamate (Dharmabas 500 EC 2 ml L-1). The result showed that liquid bioinsecticide formulations were effective against mortality, infected nymphs and nymph death time. All entomopathogenic fungi isolates were able to cause infections in paddy bugs nymphs of 68% - 84%. Beauveria sp Pky isolate and Metarhizium sp isolate Jjt caused nymph mortality of 72% - 84% and the effectivity did not differ from insecticide b.a. Carbamate. Conidia viability of all entomopathogenic isolates in liquid media within 24 hours reached more than 80%. The fastest time to death of paddy bugs nymph occurred at 5.44 days ( Metarhizium sp. isolate) and 5.92 days (Beauveria sp. isolate) in coconut water media. Metarhizium sp. and Beauveria sp. in the medium of coconut water or shrimp shell extract has a very high potential to be developed as a bio insecticide, but it still needs to be further tested for its effectiveness in field conditions.Keywords: indigenous entomopathogen, coconut water, shrimp shell extract, paddy bugs nymph

Mikroba agens hayati dari perakaran tanaman berpotensi untuk dimanfaatkan sebagai Biopestisida, baik sebagai biofungisida maupun bioinsektisida.  Tujuan kegiatan ini adalah memberikan pelatihan kepada kelompok tani Rukun Bersama di Kota Palangka Raya agar mampu membuat biopestisida secara mudah dan murah untuk mengendalikan hama dan penyakit yang ramah lingkungan. Biopestisida merupakan alternatif mengurangi penggunaan pestisida kimia, sehingga dapat menghemat biaya usaha tani di masa Pandemi Covid 19. Kegiatan Pengabdian kepada Masyarakat (PkM) ini dilaksanakan pada bulan Agustus hingga September 2021 pada Kelompok Tani Rukun Bersama yang berlokasi di Kelurahan Tanjung Pinang, Kota Palangka Raya, Kalimantan Tengah. Metode pengabdian masyarakat dengan cara diskusi interaktif, pelatihan secara langsung teknik isolasi agens hayati menggunakan umpan nasi dan umpan serangga larva ulat hongkong (Tenebrio molitor), pembuatan biopestisida formulasi padat dan formulasi cair. Hasil evaluasi menunjukkan bahwa 100% petani pengetahuannya meningkat terhadap mikroba agens hayati yang bermanfaat sebagai bahan pembuatan Biopestisida, seperti jamur Trichoderma sp., Beauveria sp. dan Metarhizium sp. yang diisolasi dari perakaran tanaman bambu, serai, sirih, pisang, cabai dan putri malu.  Petani secara mandiri mampu membuat biopestisida formulasi padat dan cair, dengan tingkat kontaminasi pada substrat hanya sekitar 5 %, hal ini menunjukkan bahwa petani terampil melakukan proses isolasi dan perbanyakan subtrat dengan tingkat keberhasilan hingga 95%. Microbial biological agents from the root zone of plants have the potential to be used as biopesticides, both as bio fungicides and bioinsecticides. The purpose of the current activity is to make biopesticides easy and feasibly to control pests and diseases that are also environmentally friendly. Biopesticides are an alternative to reduce the use of chemical pesticides and save farming costs during the Covid-19 Pandemic. This Community Service activity was carried out from August to September 2021 at the Rukun Bersama Farmer Group in Tanjung Pinang Village, Palangka Raya city, Central Kalimantan province. Community service methods included interactive discussions, hands-on training on biological agent isolation techniques using rice bait and insect bait for Hong Kong caterpillar larvae (Tenebrio molitor), and the production of solid formulations and liquid formulations of biopesticides. The results of the evaluation showed that 100% of farmers' knowledge was increased about microbial biological agents that were useful as ingredients for making biopesticides, such as Trichoderma sp., Beauveria sp. and Metarhizium sp. isolated from the roots of bamboo, lemongrass, sirih (Piper betle), banana, chili and putri malu (Mimosa pudica). Farmers independently made solid and liquid biopesticide formulations with a substrate contamination level of about 5%. It showed that farmers were skilled in the process of isolation and substrate propagation with a success rate of up to 95%.

ABSTRACT Diamondback Moth (Plutella xylostella) can attack the shoots and leaves of plants belonging to the Cruciferae family (cabbage, mustard greens, caisin) from seedling to harvesting. The part of the plant that it attacks is the leaf with symptoms of holes. In general, in controlling pests, farmers always partner with chemical insecticides, while in the concept of integrated pest management (IPM), the use of chemical insecticides is the last alternative. To overcome this, pest control is directed to the use of plants as botanical insecticides. From the research, it was found that 9 types of swamp plants had a value of 84.00% that killed the tritip caterpillar, and 3 types that killed 81-82%. The LD50 value of the caterpillar in 10 swamp plant species was classified as moderately toxic (Galam, Cambai Karuk, Gandarusa grass, Pegagan grass, Tawar, Tegari, Melinjo, Kipahit, Maja and Tapak Liman), and 3 other types of swamp plants were mildly toxic ( Jingah, Bidara and Tanduk Rusa). Thus, it is necessary to preserve swamp wild plants so that these plants do not become extinct.   Keywords: Plutella xylostella, swamp plant, botanical insecticide,

Lebak swamp weeds such as Kayambang (Salvinia molesta) grow abundantly. They can be used as compost, which effectively improves soil fertility, increasing nutrients N, P, and P K quickly and environmentally friendly. The effectiveness of compost fertilizer needs to be increased by adding indigenous microbes as decomposers and biological agents to control plant diseases. The activities carried out to empower horticultural farmer groups on sandy land in Tanjung Pinang Village, Palangka Raya are through socialization, training in composting with three types of antagonist fungus Trichoderma sp. (Trichocompost), facilitate the procurement of weed chopping machines, assist farmers in horticultural crop cultivation, and increase farmers' independence in self-supporting organic fertilizers. The use of Kayambang as Trichocompost with microbial decomposers and indigenous biological agents is new knowledge for partner farmers. The application of Trichocompost on the demonstration plots shows that eggplant plant growth and yields are excellent, meaning that Trichocompost can improve the fertility of sandy soils. Farmers participating in the training stated that the use of Trichocompost could reduce farming costs because it can substitute for manure that has been used by farmers and can meet the self-help needs of organic fertilizers. Participants wanted an advanced mentoring program because the farmers had not yet mastered the isolation or propagation of biological agents and decomposer microbes.