The damage caused by the southern root-knot nematode (Meloidogyne incognita) in coffee plants has been reported in various countries, including Indonesia. The measures to control the nematodes on coffee seedlings and fields depend on synthetic nematicides. Addressing this issue requires not only a more environmentally friendly and cheaper technology but also equal effectiveness comparable to synthetic nematicides. This study aimed to test the effectiveness of fortified bacterial consortium (FBC) involving a combination of liquid organic fertilizer (LOF), botanical pesticide, and a bacterial consortium to control M. incognita infection in Coffea arabica seedlings. The treatments in this study consisted of control, synthetic nematicide with the active ingredient fluopyram, and various FBC concentrations ranging from 20%, 40%, 60%, 80%, and 100%. The results demonstrated that the application of 60% to 100% FBC increased plant growth. The most effective and efficient treatment for increasing plant growth was the application of 60% FBC. When compared with control plants, 60% FBC treatment resulted in 6.8% longer root, 9.5% higher plant, 5.3% heavier plant fresh weight, and 4.8% heavier root fresh weight. We also found that the application of 60% to 100% FBC increased the amount of chlorophyll in leaves. FBC application also reduced the number of nematodes in the soil up to 60.6%, the number of galls up to 286.4%, and the severity of root damage up to 118.2%. This study indicates that the application of 60% FBC is the most effective and efficient in controlling M. incognita and stimulating the growth of C. arabica seedlings. Key words: Bacillus; pseudomonas; endophyte; rhizobacteria; fluopyram.

Crocidolomia binotalis (Cb) (Zeller) is one of the main pests of cabbage which is difficult for farmers to control in the Ijen Crater in Indonesia. The demand for cabbage in Indonesia is increasing every year, so intensification efforts are continuously being made. Farmers intensively use synthetic pesticides as the primary control of Cb. The purpose of this study is to examine several control agents that can be used as an alternative to synthetic pesticides. Then, it provides recommendations to Ijen Crater farmers to adapt in reducing the use of synthetic pesticides. The biopesticide used was based on the Nuclear Polyhedrosis Virus strains of Spodoptera litura (SlNPV) and Helicoverpa armigera (HaNPV), botanical pesticides, and synthetic pesticides as a comparison treatment. SlNPv and HaNPV isolates were obtained from the Indonesian Sweetener and Fiber Crops Research Institute. The botanical pesticide formulas come from a combination of Azadiracta indica, Aglaia odorata, Ageratum conyzoides dried for one week and proposed to form flour. Then, it was extracted using 96% ethanol solvent, 0.5% tween 90 using a rotary evaporator at a temperature of 40oC. For synthetic pesticide, the treatment used the active ingredient Permethrin 20 mgL-1. The cb collected from the field was re-filtered in a Petri dish by providing artificial feed soaked with this material for 5 minutes. The highest mortality test results were found in the botanical pesticide formula with a value of 100% at 72 hours. Mortality in SlNPV and HaNPV tended to be stable with a maximum value of 72.02%. The results of mortality testing in the laboratory can be a recommendation for alternative control of Cb pests in cabbage plants in the field. In this case, it is an effort to reduce farmers' dependence on using synthetic pesticides.

Profenofos is an active ingredient from the organophosphate group which residue is often found in various fresh and processed vegetable products. This study aimed to assess the use of aqueous plant extracts of Sapindus rarak seeds, Luffa acutangula peel and Centella asiatica leaves to reduce profenofos residues in leaf of mustard and to evaluate their performance in suppressing the grasshopper populations. S. rarak seeds, L. acutangula peels and C. asiatica leaves were dried and filtered using a 100 mesh sieve. A total of 30 gm samples of each ingredient were mixed with 1000 ml of water and blended at 800 rpm, then filtered using 100 mesh sieve before use. The field experiment was performed by spraying profenofos pesticide with a concentration of 3 ml l^-1 at a dose of 30 ml per plant. Two days after the profenofos application, the plants were sprayed with the aqueous plant extracts. Twenty-four hrs aqueous plant extracts application, pesticide residues were detected by the UPLC-MS/MS machine. The phytotoxicity test results showed that the use of aqueous plant extracts at a dose of 30 ml per plant did not cause any phytotoxic symptoms. Furthermore, in the field experiment, the control plants showed a residual value of 2407.62 ng g^-1. Results of UPLC-MS/MS showed that the residual value of profenofos in PL treatment (aqueous extract of S. rarak seeds) was 1502.05 ng g^-1, the recorded residual value in the PP treatment (aqueous extract of C. asiatica leaves) was 1316.27 ng g^-1 and the residual value in the PG treatment (aqueous extract of L. acutangula peels) was 660.71 ng g^-1. In the treated plants, the residual value decreased from 37.48% to 72.55%. Furthermore, the number of grasshoppers after the PL treatment decreased and was significantly different from the control. This study provides new information that aqueous plant extracts can reduce the residue of profenofos and suppress the population of grasshoppers in the mustard leaf.

Environmental degradation in the Bedadung Watershed (DAS) in Jember has led to natural disasters such as floods and landslides. A conservation effort through a program of planting 1,000 trees in the upstream area of the watershed was initiated to restore environmental health and improve the welfare of the local community. This program was conducted over nine months in Sucopangepok Village, coordinating with local authorities and residents. The tree seedlings, including Teak, Coffee, Sengon, and Soursop, were provided by BPDASHL Brantas Sampean Jember. Planting was done in vacant land using technical, social, and focus group discussion (FGD) approaches. Active community participation was evident in the planting and maintenance of the trees. The outreach and discussions increased awareness about the importance of conservation and disaster mitigation. Planting economically valuable trees is expected to provide long-term benefits for the environment and the community’s economy. The program results showed a reduction in natural disaster risks and an increase in community awareness and participation. Support from the government, private sector, and non-governmental organizations is crucial to ensure the success and sustainability of this conservation program.

ABSTRAK Desa Sukorambi adalah salah satu desa sentra produk hortikultura di Kabupaten Jember. Permasalahan yang dihadapi adalah ketergantungan penggunaan pestisida sintetis. Tujuan dari pengabdian masyarakat adalah mengenalkan pestisida nabati sebagai alternatif pengganti pestisida sintetis dan menurunkan residu pestisida pada produk hortikultur. Pengabdian ini dilakukan di Desa Sukorambi, Kecamatan Sukorambi, Kabupaten Jember. Metode pelaksanaan terdiri dari FGD (Focus Group Discussion) dan praktek produksi dan aplikasi pestisida nabati. Hasil pengabdian menunjukkan bahwa ada peningkatakan pengetahuan dan keterampilan petani dalam produksi pestisida nabati baik secara mandiri maupun kelompok. Forum diskusi terbagi menjadi dua sesi, yaitu pemaparan materi dan tanya jawab pelaksana dengan petani. Untuk aplikasi di lahan, petani diberikan penjelasan mengenai teknik aplikasi dan kalibrasi. Kemudian petani melakukan aplikasi pestisida pada lahan tanaman bayam. Kesimpulan dari pengabdian ini adalah wawasan dan keterampilan petani terkait dengan pestisida nabati semakin meningkat. Diharapkan mampu memproduksi masal pestisida nabati untuk mengurangi ketergantungan terhadap pestisida sintetis dan mengurangi residu pestisida. Kata kunci: berkelanjutan; hortikultura; pemberdayaan; produksi; residu. ABSTRACT Sukorambi Village is one of the centers for horticultural products in Jember Regency. The main problem is dependence on the use of synthetic pesticides. The purpose of community service is to introduce botanical pesticides as an alternative and reduce pesticide residues in horticultural crops. This service is carried out in Sukorambi Village, Sukorambi District, Jember Regency. The implementation method consists of FGD (Focus Group Discussion) and production practices and application of botanical pesticides. The results of the service show that there is an increase in the knowledge and skills of farmers in the production of bpotanical pesticides, both independently and in groups. The discussion forum was divided into two sessions, namely the presentation of the material and the question and answer session with the farmers. For applications in the field, farmers are given an explanation of the application and calibration techniques. Then the farmers applied pesticides to the spinach plantations. The conclusion of this service is that the insight and skills of farmers related to botanical pesticides are increasing. It is expected to be able to mass produce botanical pesticides to reduce dependence on and reduce pesticide residues. Keywords: sustainable; horticulture; empowerment; production; residue.

Public awareness of consuming healthy food with minimal pesticide residues has been on the rise. By contrast, farmers still rely on synthetic chemical pesticides to control pests. The shift from synthetic chemical insecticides to botanical insecticides or bioinsecticides is quite complex, especially in Indonesia. Farmers must have the appropriate technology to be independent of synthetic chemical insecticide. This study aims to test the effectiveness of organic adjuvants to increase the effectiveness of insecticides coupled with chlorpyrifos as an active ingredient. We tested the organic adjuvants containing sulfur, acetic acid, NaCl and aqueous extract of Azadirachta indica leaves. The test involved mustard (Brassica juncea (L.) Czern.) plant on land with a high record of S. litura attacks. The study followed a randomized block design with 8 treatments and 5 blocks, with each block consisting of 20 test plants. The treatments involved water control, chlorpyrifos insecticide at recommended concentration, and a combination of chlorpyrifos insecticide and organic adjuvant. The results showed that the combination of insecticides and organic adjuvants did not have a negative impact on mustard growth, as evinced by the absence of significant difference in all treatments. Furthermore, the combination of insecticides and organic adjuvants reduced the rate of plant damage, the population of S. litura and the population of other insect pests. On the other hand, the combination of insecticides and organic adjuvants did not significantly affect the number of beneficial insects compared with treatment without insecticides. The study documented that the combination of 40 mL L-1 organic adjuvant + 1.8 mL L-1 insecticide chlorpyrifos led to the best results. This combination is found the most effective in reducing plant damage and pest population, without any negative impact on beneficial insects. This study has proven the value of organic adjuvants coupled with chlorpyrifos as the active ingredient to reduce the use of insecticides.