No abstract

Food security and sovereignty are strategic policy agenda of national security. Accelerating the growth of sustainable food production and improving the welfare of farmers through optimization of land resources are the priority. One way to increase food production and enhance soil quality is through the utilization of organic fertilizers such as livestock waste. In addition, it is expected to reduce CO2 emissions rather than leaving manure untreated. The purpose of this study was to determine the effect of solid manure and biourine application on increasing maize production and mitigate CO2 emission. This study was conducted in Inceptisols Rasau Jaya II, West Kalimantan. A randomized complete block design trial was established from plots fertilized with solid organic fertilizer (PO), biourine (BIO), solid organic fertilizer+biourine (PO+BIO), and control, with five replications. Parameters observed in this study were CO2 flux and agronomic performance of maize. CO2 emission was measured using the static chamber method, placing chambers on the surface of the soil and taking measurements using an infrared gas analyzer for 125 days. CO2 fluxes ranged from 59.93 to 106.07 Mg ha-1 yr-1 and there was no significant difference among the organic fertilizer treatments; nevertheless, the lowest CO2 flux was illustrated in PO+BIO. Maize productivity was influenced by the organic fertilizer and PO+BIO had the greatest maize yield.

Demonstrasi Farming merupakan salah satu metode penyampaian hasil-hasil penelitian dan pengguna kepada petani dan pengguna lainnya melalui peragaan teknologi untuk mempercepat adopsi teknologi. Tujuan kegiatan mendiseminasikan inovasi teknologi varietas unggul baru padi melalui Demonstrasi Farming dalam rangka mempercepat adopsi teknologi. Kegiatan dilaksanakan di Kelompok Tani Nek Sama, Desa Aur Sampuk, Kecamatan Sengah Temila, Kabupaten Landak dengan waktu pelaksanaan dimulai bulan Juni sampai dengan Oktober 2021.  Paket teknologi budidaya padi dilakukan dengan pendekatan Pengelolaan Tanaman Terpadu (PTT). Variabel yang diamati meliputi : 1). Implementasi Inovasi Teknologi Demfarm Padi, 2). Produktivitas Padi dan 3). Penyebaran dan peluang Adopsi Teknologi. Hasil kegiatan Demfarm menunjukkan introduksi Varietas Unggul Baru (VUB) yang  dikombinasikan dengan pendekatan PTT mampu meningkatkan produktivitas padi untuk Varietas Inpari 32 sebesar 39,00 % dan Varietas Inpari 37 sebesar 33,33 % dibandingkan produktivitas teknologi eksisting petani.  Inovasi teknologi Demfarm Padi yang berpeluang untuk diadopsi meliputi; penggunaan varietas unggul (91,67 %), penggunaan benih bermutu/bersertifikat dan perlakuan benih (88,33 %), pengendalian hama terpadu sesuai OPT sasaran dengan pendekatan PHT (91,67 %), sistem olah tanah sempurna (81,67 %) dan sistem tanam bibit 2 – 3 batang per rumpun (76,67 %). Diseminasi teknologi melalui Demfarm Padi dan Temu Lapang memberikan respon yang baik kepada petani kooperator maupun petani lainnya baik di wilayah lokasi pelaksanaan maupun di luar wilayah pelaksanaan melalui keunggulan teknologi yang didemonstrasikan sehingga dapat dijadikan contoh dan media bagi pengguna teknololgi

The demand for horticultural products that are cultivated organically has increased. However, the susceptibility of plants to pests and diseases becomes an obstacle in organic crop cultivation. The use of biopesticides can be a solution to overcome these problems with the added benefit due to its environmental friendly and sustainable aspect. The purpose of this study was to determine the effect of biopesticides and combined fertilization in promoting plant health and enhancing tomato growth on the peat soil. This study used a randomized complete block design with two factors and three replications. The first factors were four combined fertilizations (K), namely: K1: 100% organic fertilizer+local microorganisms; K2: 75% inorganic fertilizer+Petrobio, K3: 75% inorganic fertilizer+M-Dec, and K4: 100% inorganic fertilizer. The second factors were three types of pesticides (S), namely: S1: homemade biopesticides, S2: industrial biopesticides containing active ingredient Eugenol 188,4 g L-1, and S3: chemical pesticides containing active ingredient fipronil 50 g L-1. The observed data were analyzed statistically using Analysis of Variance (ANOVA) and further tests were carried out using Duncan’s Multiple Range Test (DMRT) at the 5% level. The results showed that the tuba roots and betel leaves used in biopesticides had different effects on controlling fruit flies and leafminer caterpillars, as well as anthracnose disease. The application of chemical pesticides influenced the lowest infestation of fruit flies and leafminer caterpillars, while homemade and industrial biopesticides, as well as chemical pesticides had the same effect in reducing the intensity of anthracnose. In conclusion, a combination of 100% inorganic fertilizer+industrial biopesticides and 75% inorganic fertilizer+Petrobio gave greater tomato yields. Biopesticides could sustain organic crop cultivation in peatlands considering the ingredients availability, affordable, and easy application.

Abstract:Composted dairy manure (CDM) is among the management practices used in transitioning from a conventional to an organic agricultural system. The objectives of this study are to evaluate the impact of several organic nitrogen (N) sources on: (i) soil organic C (SOC) and soil total N (STN) content; (ii) soil C and N distribution among soil fractions; and The C and N parameters studied and their distributions among various fractions (mineralizable, slow, and resistant) were influenced by the C and N contents of the added CDM. The low C and N contents of the CDM added in the second year of the study did not contribute to soil C and N build-up. The results generated from this study supported our hypothesis because the quality of CDM addition highly influenced C and N distribution among different fractions. Overall, for a transitioning system, CDM should to be added based on the manure-N content to ensure an adequate amount of N addition. To fully evaluate treatment benefits, a longer study period would be required to allow for system adjustment.