This research aimed to assess the performance of a technology package in relation to rice yield in a B-type tidal rice field in Central Kalimantan province (Indonesia). We selected four areas with different hydrological conditions, soil characteristics, and farmer management systems in Pulangpisau and Kapuas Regency. The introduced technology package covered water management, soil tillage, amelioration and fertilization, adaptive high-yielding varieties, and crop protection. The results showed that, on average, the rice yield of Terusan Karya was 5.52 t ha⁻¹, followed by Belanti B (3.75 t ha⁻¹), Belanti A (3.61 t ha⁻¹), and Talio Hulu (3.27 t ha⁻¹). Rice varieties that yielded more than 5 t ha⁻¹ were Inpara 8 (6.28 t ha⁻¹), Suppadi 89 (5.54 t ha⁻¹), Inpara 3 (5.46 t ha⁻¹), and Inpara 2 (5.36 t ha⁻¹). The implementation of a site-specific technology package combined with intensive guidance for the farmer on its implementation is the key factor in increasing rice productivity in tidal rice farming.

Low productivity is one of the main problems to increase shallot productivity in tidal swamp lands. Biofertilizer is an alternative to increase soil fertility, plant productivity, inorganic fertilizer efficiency, and decrease environmental pollution. The aim of this research was to test the biofertilizer formula containing decomposer (Trichoderma sp), P-solubilizer (Bacillus sp), and N-fixer (Azospirillium sp and Azotobacter sp) to increase soil chemical properties and shallot productivity in tidal swamp lands. This research was conducted from July – September 2018 in Wanaraya District, Barito Kuala Regency, South Kalimantan. The treatments involved (A) No fertilizer, (B) NPK (recommendation dose), (C) Biofertilizer, (D) Biofertilizer + NPK (50% of recommended dose), (E) Biofertilizer + NPK (75% of recommended dose). The treatment was arranged by randomized completely block design with four replications. Recommended dose of NPK fertilizer was NPK compound 500 kg ha⁻¹, SP-36 150 kg ha⁻¹, dan KCl 200 kg ha⁻¹. Research results showed that biofertilizer formula combined by inorganic NPK fertilizer as much as 50 to 75 % of recommended dose could increase soil chemical properties and yielded as much as 2.39 to 6.19% compared to NPK fertilizer with recommended dose. For further development, this biofertilizer need to be tested at several locations with broader plot size.

Organic matter as a source of organic fertilizer is very useful to increase agricultural production, decrease environmental pollutants, and increase land quality. This research aims to understand the roles of microbes on organic degradation and the effects on paddy plant in peat land. The research was conducted in the peat land of Liang Anggang village, Landasan Ulin subdistrict, Banjarbaru District, South Kalimantan province in the dry season 2010. There were two steps of experiment, i.e: (1) degradation of organic matter (composting) by using biodecomposer Mdec (consortia of decomposer microbes) and Trichoderma; (2) effects of biocompost on paddy plant. Treatments were biocompost (Mdec), biocompost (Trichoderma), and without compost (farmer’s method) and arranged by using a randomized completely block design with five replications. Research results showed that biocompost quality made by using Mdec was better than that of Trichoderma degraded one. Composting process using Mdec decreased C/N ratio from 43.32 to 17.30 within two weeks. At the same time, C/N ratio of biocompost made by using Trichoderma was still high (35.00). Biocompost (Mdec) gave the highest paddy yield (3.50 t/ha), while biocompost (Trichoderma) and no compost treatments gave paddy yield as much as 3.32 t/ha and 2.96 t/ha respectively.

The Indonesian government is continuously developing swampy land through Ministry of Agriculture to support the rice production increase program. Known as a low-cost and environmentally friendly, biofertilizer can be applied to increase the nutrient availability, reduce inorganic fertilizer use, improve the soil health and increase the rice production in a sustainable ways. The experimental aim is to test the dose of liquid biofertilizer, P-solubilizer, and N-fixer to increase rice productivity in tidal swamp lands. The experiment was conducted on November 2020 – Maret 2021 in Karang Buah, Belawang District, Barito Kuala Regency, South Kalimantan. The experiment design was RCBD with four replicates. The treatments were A. 300 kg/ha NPK + 150 kg/ha Urea (recommended dose); B. 75 % of the recommended dose + Biofertilizer 2L/ha; C. 75 % of the recommended dose + Biofertilizer 4L/ha; D. 75 % of the recommended dose + Biofertilizer 6L/ha; and E. 75 % of the recommended dose + Biofertilizer 8L/ha. The research results showed that the use of liquid biofertilizer of up to 6L/ha in combination with 225 kg/ha NPK+ 112.5 kg/ha. Urea gave the highest grain yield (6.88 t/ha for tiles or 5.77 t/ha for plots) brought a yield increase of 0.57 t/ha (9.03%) for tiles or 0.45 t/ha (8.46%) for plots compared to the recommended dose treatment (300 kg/ha NPK + 150 kg/ha Urea). Liquid biofertilizer application 6L/ha could reduce the application of inorganic fertilizer by up to 25% of the recommended dose and can be used to eco-friendly yield boost up with low input costs reducing the continuous use of inorganic chemical fertilizer.