Now rice can be planted in the yard, using polybags and SRI Method (one seed per pot). Liquid organic fertilizer based on local microorganism (LOM) which is obtained by fermentation livestock urine and extract of golden snail. This extract is used as biodecomposer to ferment livestock waste into solid and liquid fertilizer. The fertilizer is used for black rice plant in polybag. This technology was applied in Sri Agung village from Sido Rukun and Sido Mukti area, specially for womens from several RT and for agriculture womens association that are active in the utilization of yard. The target is to increase the yield of the yard, previously no rice crops, now exist, at least each pot produced 500 g of dry black rice, 100 liters of liquid organic fertilizer per month and 50 kg of solid fertilizer per two months. The result showed, the level of PKK participation when mentoring is high because from 50 people, 40 people are present in every activity. Evaluation showed there are high farmer participation in land preparation and demonstration of RINMAS technology and low level farmers participation in implementation SRI method. It is recommended to planting rice on the yard.

Decanter cake (DC) is one of the oil palm mill solid wastes that contains macro and micronutrient elements especially high Nitrogen levels. Using it as organic fertilizer could substitute half of the chemical fertilizer dose. The alternative decrease in chemical fertilizers requires nutrients from organic materials which quickly absorbed, mainly fermented cows liquid fertilizer (FLF). This research was design with Randomized Complete Block Design to evaluate the combination of DC and FLF on edamame growth and yield. The observed variables of the growth parameter are the number of branches, leaves, pods, filled pods per plant, fresh pod weight, and yield per unit area. Data were processed using analysis of variance and DMRT. The result showed, for growth parameter, the highest number of branches and leaves per plant was achieved at DC dose 20 tons ha-1 without FLF and significant difference with DC 5 ton ha-1 with or without FLF of cow urine. Yield component, number of pods, and filled pods were achieved at DC 10 ton ha-1 with FLF 60% of cow urine concentration.

Fluktuasi produksi dan produktivitas kopi Liberika di Provinsi Jambi disebabkan oleh beberapa hal salah satunya adalah umur tanaman kopi Liberika yang sudah tua mencapai kurang lebih 40 - 50 tahun sedangkan umur ekonomis tanaman kopi Liberika hanya berkisar 30 tahun. Oleh karena itu perlu upaya peremajaan tanaman kopi menggunakan bibit unggul. Untuk menyediakan bibit yang unggul diperlukan masukan yang dapat mempengaruhi pertumbuhan bibit dan satu diantara masukan tersebut adalah pemberikan pupuk organik. Penelitian ini bertujuan untuk mengetahui pengaruh dosis pupuk kandang sapi terhadap pertumbuhan bibit kopi Liberika di polybag dan memperoleh dosis pupuk kandang sapi yang memberikan pertumbuhan terbaik pada bibit kopi Liberika di polybag. Penelitian dilaksanakan di Teaching and Research Farm Fakultas Pertanian Universitas Jambi, Kampus Unja Mendalo. Waktu pelaksanakan selama kurang lebih tiga bulan, yaitu pada bulan Februari sampai bulan Mei 2020. Rancangan yang digunakan adalah Rancangan Acak Kelompok (RAK), dengan 1 faktor yaitu pupuk kandang sapi (p) yang terdiri dari 5 perlakuan yaitu 0 g/tanaman, 160 g/tanaman, 190 g/tanaman, 220 g/tanaman dan 250 g/tanaman. Hasil penelitian menunjukkan bahwa pemberian pupuk kandang sapi dosis 0 g/tanaman sampai 250 g/tanaman pada bibit kopi Liberika umur 5 – 8 bulan belum mampu meningkatkan pertambahan tinggi tanaman, pertambahan diameter batang, pertambahan jumlah daun, umur muncul tunas, bobot kering tajuk, bobot kering akar sampai rasio tajuk akar. Tidak terdapat dosis pupuk kandang sapi yang mampu meningkatkan pertumbuhan bibit kopi Liberika di polybag.

Pengembangan elektroda flat base dengan menggunakan gel konduktif telah dilakukan dalam pengukuran data geolistrik di lapangan. Pengembangan elektroda flat base bertujuan untuk mengganti penggunaan elektroda konvensional berupa elektroda tancap (spike electrode) yang memiliki keterbatasan pada area yang berbeton atau tidak memiliki ruang tancap ke tanah. Ukuran flat base 7 x 7 cm dengan gel konduktif, gel A (campuran tepung gula, garam, dan air), gel B (campuran MgSO4, tepung gula, air), dan gel C (campuran CuSO4, tepung gula, air), telah dibuat. Perbandingan hasil pengukuran dilakukan terhadap hasil pengukuran menggunakan ketiga jenis gel untuk menentukan gel konduktif yang terbaik yang dapat menggantikan penggunaan elektroda tancap. Dari hasil pengukuran diperoleh, arus listrik yang mengalir pada elektroda flat base dengan ukuran 7 x 7 cm dan gel A lebih baik dibandingkan penggunaan gel yang lain. Selain itu dari hasil inversi data pengukuran, hasil pengolahan data yang menggunakan elektroda dan gel tersebut cukup merepresentasikan kondisi bawah permukaan daerah pengukuran.   The development of flat base electrodes using conductive gel has been done in measuring geoelectric data in the field. The development of flat base electrode aims to replace the use of conventional electrodes in the form of spike electrode which has limitedness in the area which is concrete or does not have a tap space to the ground. The size of a 7 x 7 cm flat base with a conductive gel, gel A (a mixture of sugar, salt, and water flour), gel B (mixture MgSO4, sugar powder, water), and gel C (CuSO4 mixture, created. A comparison of the measurement results has made to the measurements using the three types of gels to determine the best conductive gel that can replace the use of the stepped electrode. From the measurement results obtained, the electric current flowing on the flat base electrode with a size of 7 x 7 cm and gel A is better than the use of another gel. In addition from the inversion of measurement data, the results of data processing using electrodes and the gel is quite representative of the subsurface condition of the measurement area.

Decanter cake is a solid waste from a palm oil mill with quite a lot of availability and has not been utilized optimally. This research aimed to utilize decanter cake (DC) palm oil mill solid waste as solid Fertilizer and liquid Fertilizer to increase the growth and yield of Edamame. The research design used was a Randomized Block Design (RBD) with a treatment of solid DC with liquid DC, namely solid DC 0 tons ha-1, 10 tons ha-1, and 15 tons ha-1, with liquid DC concentrations of 0 % and 100 %. The variables observed were the number of leaves, number of pods, weight of pods, and yield of Edamame per hectare. The results showed that the highest number of leaves was achieved at 15 tons ha-1 solid DC dose with 100 percent liquid DC concentration. Likewise, the highest number of pods and weight of pods was at a quantity of 15 tons ha-1 and had the same effect as a dose of 20 tons ha-1 with a 100 percent liquid DC concentration. The best edamame yields per hectare were achieved in 15-ton ha-1 solid DC and 100 percent liquid DC concentrations.