Preparation and characterization of Fe3O4 magnetized natural zeolite adsorbent for adsorption of methylene blue dye have been carried out. Natural zeolite/Fe3O4 adsorbent preparation was carried out using coprecipitation of Fe2+ and Fe3+ ions (1: 2 mol ratio) on the natural zeolite surface. Characterization was carried out using X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FTIR), and Scanning Electron Microscopy (SEM) to determine the effect of Fe3O4 on the natural zeolite surface. UV-Vis spectroscopy was used to determine the concentration of methylene blue after the adsorption process. The characterization results showed that Fe3O4 was successfully embedded in the natural zeolite without damaging the natural zeolite's crystallinity. Natural zeolite/Fe3O4 adsorbent showed easy separation from water medium after the adsorption process. The optimum conditions for adsorption were achieved at the contact time of 60 minutes, and the initial concentration of methylene blue was 30 ppm with an adsorbent mass of 25 mg. Adsorption kinetics followed pseudo-second-order reaction kinetics, and adsorption isotherm followed Langmuir isotherm with an adsorption capacity of 32.258 mg/g.

Abstrak : Pelaksanaan Pengabdian kepada masyarakat dilakukan untuk menjawab masalah petani dalam teknik budidaya padi lokal “Banga Laka” yang terindikasi menggunakan pestisida sintetik berlebih, selain itu petani tidak mengenal jenis hama yang menyerang tanaman padi sehingga cenderung penggunaan pestisida tidak tepat sasaran. Solusi yang ditawarkan oleh tim PKM yaitu menerapkan teknologi light trap yang terbukti efektif mengendalikan hama pada tanaman padi. Metode yang digunakan pada kegiatan ini adalah 1) penyuluhan berkenaan dengan pengenalan dan perawatan alat light trap dan 2) pengamatan langsung dilapangan untuk melihat jenis-jenis hama yang terperangkap pada light trap. Evaluasi efektivitas light trap dilakukan dengan metode partisipatif dimana masyarakat ikut melakukan pemantauan hama yang terperangkap pada setiap jenis perangkap dan melakukan perhitungan penghematan biaya produksi. Pemasangan light trap selama satu bulan dapat menekan penggunaan jenis pestisida sebesar 83,86% dengan penghematan biaya pengendalian hama sebesar Rp. 1.325.000/musim tanam, berdasarkan pengamatan diketahui bahwa light trap berhasil menangkap 7 jenis hama (881 ekor) dengan proporsi tertinggi pada jenis cahaya ungu (49%).Abstract: The implementation of community service is carried out to answer farmers' problems in the local rice cultivation technique "Banga Laka" which is indicated to use excess synthetic pesticides, besides that farmers do not know the types of pests that attack rice plants so that they tend to use pesticides not on target. The solution offered by the PKM team is to apply light trap technology which is proven to be effective in controlling pests on rice plants. The methods used in this activity are 1) counseling regarding the introduction and maintenance of light traps and 2) direct observation in the field to see the types of pests trapped in light traps. Evaluation of the effectiveness of light traps is carried out using a participatory method where the community participates in monitoring pests trapped in each type of trap and calculating production cost savings. Installing a light trap for one month can reduce the use of pesticides by 83.86% with a pest control cost savings of Rp. 1.325.000/planting season, based on observations it was known that the light trap managed to catch 7 types of pests (881 individuals) with the highest proportion in the type of purple light (49%).

Arbuscular mycorrhiza fungi (FMA) can be found in almost all types of soil. FMA symbiosis can increase plant growth, water absorption, and nutrients such as nitrogen, phosphorus, and other micronutrients. It also can increase resistance to water stress, reduce the level of pathogenic attacks and increase growth booster hormones. The purpose of this study was to identify the type of FMA in several areas of plantation and horticultural crops in Pemo Village. The results showed that a total of 1004 spores were found consisting of two types of FMA, namely the genus of glomus as many as 788 spores, and 216 spores from the genus acaulospora. The planting area that has the highest number of spores is horticultural planting, which is 336 spores. Characteristics of dominant dominant spores of oval and brown.

ABSTRAKPendampingan melalui kegiatan KKN - Mandiri bertujuan untuk : (1) memberikan transfer ilmu  pengolahan tanah dan manfaat mulsa pada lahan pekarangan, (2) memberikan pelatihan pembuatan pupuk bokasi dan pemanfaatan  limbah ternak.Kegiatan dilakukan di Desa Tonggo Papa Kabupaten Ende. Metode yang digunakan adalah Partisipasi Rural Appraisal (PRA) yaitu keterlibatan secara aktif semua pihak yang melibatkan aparat desa, ibu PKK dan perwakilan masyarakat secara langsung dengan total peserta 20 orang. Hasil yang di capai dari kegiatan ini peserta  paham tentang vertikultur 90%, manfaat dari mulsa 100%, tujuan jarak tanam 95%, manfaat pupuk organik 95 %, bahan untuk pupuk 100%. Kata kunci: KKN mandiri; pengolahan tanah; mulsa, tanaman hortikultura;vertikultur; pupuk bokasi ABSTRACTAssistance through KKN - Mandiri activities aims to: (1) provide knowledge transfer on soil management and the benefits of mulching on yards, (2) provide training on making bokasi fertilizer and utilizing livestock waste. The activity was carried out in Tonggo Papa Village, Ende Regency. The method used is Participatory Rural Appraisal (PRA), which is the active involvement of all parties involving village officials, PKK women and community representatives directly with a total of 20 participants. The results achieved from this activity were participants understood about 90% verticulture, 100% benefits of mulch, 95% spacing goals, 95% benefits of organic fertilizers, 100% fertilizer ingredients. Keywords: independent community service program; soil tillage; mulch; horticultural crops; verticulture; bokasi fertilizer

<p><em><strong>Counseling of Soil Fertility, Organic Fertilizers, Pests and Plant Diseases for Baranuri Farmers Group</strong>. </em>The Baranuri Farmers Group (KT. Baranuri) is one of the providers of vegetables for the people of Ende City. The results of interviews with farmers obtained several problems, namely, there is no data on soil fertility and lack of understanding of soil fertility, organic fertilizers, pests and plant diseases. The solution given is to analyze soil pH and organic-C to be used as a reference for soil fertility conditions as well as counseling about soil fertility, organic fertilizers, pests and plant diseases. This service activity aims to provide information on soil fertility, increase farmers' knowledge regarding soil fertility, organic fertilizers and plant pests and diseases. The counseling method used is a group approach. Purposive soil sampling, samples were taken diagonally. The organic-C content was analyzed in the laboratory by Walkley and Black method, while soil pH was measured directly on the field using 4 in 1 Soil Survey Instrument and then matching with the criteria of assessment of soil analysis results by the Indonesian Soil Research Institute. The results obtained were the soil pH was 4-5 (very acidic-acidic) and soil organic C was 2.03-2.37% (moderate). The extension activities were succeeded in increasing public knowledge from 46.7% to 86.7% (an increase of 85.7%). The recommendation from this activity is to create a demonstration field to apply an organic fertilizer that can be observed directly by farmer groups.</p>