I am researcher in National Research and Innovation Agency since 1989. My research experience are farming system research, recommendation of an organic and organic fertilizer, soil conditioner, biochar, GHG, biopesticide and industry disposes
EDUCATION
Ph.D. from IPB University
RESEARCH, TEACHING, or OTHER INTERESTS
Soil Science, Environmental Science, Agronomy and Crop Science, Agricultural and Biological Sciences
Agroforestry as an approach to rehabilitating degraded tropical peatland in Indonesia Adi Jaya, Salampak Dohong, Susan E. Page, Mofit Saptono, Lilies Supriati, et al. Journal of Degraded and Mining Lands Management, 2024 Peatland is a unique ecosystem with water saturation; peatland regulates hydrological processes, climate, environmental conditions, and biodiversity. Poor management practises regarding peatlands can lead to land degradation, and peatland degradation typically has negative effects. Recent tropical peatland research in Indonesia has predominantly revolved around the examination of the ecological consequences resulting from various management approaches. There is little study on farmers' agroforestry efforts to preserve and restore degraded peatlands. A comprehensive examination was undertaken to assess a range of facts, information, and scholarly articles pertaining to the practise of agroforestry on peatlands in Indonesia. The primary incentive for farmers to adopt agroforestry systems originates from their recognition of the impending scarcity of trees. By integrating intercrops with cultivated trees, farmers anticipate generating adequate money to fulfil their family's economic requirements. Farmers who choose intensive intercropping practises are motivated by market demand, whereas farmers who do not adopt this approach tend to favour crops that necessitate less rigorous management. The provision of governmental assistance holds significant importance, and there is a pressing need for additional guidance and support. The potential for rehabilitating degraded peatlands by the implementation of agroforestry practises of native tree species is considerable. Their growth patterns contribute to enhanced vegetative coverage, resulting in heightened moisture levels, reduced temperatures, diminished fire hazards, and improved peat soil quality. The relationship between the physiography of the land and the depth of the peat is directly associated with the patterns and components of agroforestry in peatland environments.
The dynamics of the nutrients in degraded Vertic Endoaquepts of rainfed rice fields with soil ameliorant and soil tillage management Nourma Al Viandari, Anicetus Wihardjaka, Heru Bagus Pulunggono, Suwardi Suwardi, Mas Teddy Sutriadi Journal of Degraded and Mining Lands Management, 2023 Intensive land use in the long term can cause land degradation, affecting soil fertility, especially on Vertic Endoaquepts in Pati that have been managed as rainfed rice fields. The characteristics of rainfed rice fields are low nutrient availability and rice yields. This study aimed to determine the effect of tillage depth management and soil ameliorants on nutrient availability, plant uptake, and rice yield in rainfed rice fields. The field experiment that was conducted at farmer’s field used a split-plot design. The main plot was the treatment of tillage depth treatments (OT), with depths of 10 cm (T1) and 20 cm (T2). The subplots were ameliorant treatments (A), consisting of A1 = sugarcane leaf compost, A2 = rice straw compost, A3 = chicken manure, and A4 = cow manure, with each dose of 5 t ha<sup>-1</sup>. The Inpari 32 rice variety was grown for 95 days. Available N, P and K of the soil were measured at 0, 62, and 94 days after transplanting (DAT). Plant N, P, and K contents, plant height, number of tillers, and rice yield were measured at 62 DAT. The results showed that the interaction of soil depth and ameliorant significantly affected soil available P and K but had no significant effect on soil available N. Ameliorant treatment of cow manure significantly increased rice yield.
Improving Upland Acid Soil Properties and Increasing Maize Yield by Phosphate Rock Application with Organic Acids Mas Teddy Sutriadi, Syaiful Anwar, Budi Mulyanto, Darmawan, Husnain, et al. International Journal of Agronomy, 2022 Problems encountered in the management of upland acid soils, besides soil pH, are also low in phosphorus (P) content and less available to plants. The addition of organic acids (OAs) to the direct application of phosphate rock (PR) has not been widely studied yet and is expected to improve upland acid soil properties. The research aims to determine the effect of adding OAs on the direct application of PR to improve upland acid soil and increase maize yield. It was a greenhouse experiment using a randomized complete design in a factorial arrangement with three replications. The treatments consisted of four types of OA (citric, humic, succinic, and oxalic acid) and five OA concentration levels (0, 25, 50, 100, and 200 ppm). The hybrid maize (Zea mays L) was used as the test crop. The parameters observed were soil properties (pH, exchangeable H (H+), exchangeable Al (Al3+), exchangeable Ca (Ca2+), cation exchange capacity (CEC), available P (as P-Bray1)) and maize growth (plant heights and yield). The results show that the types of OA treatments had no significant effect on soil properties and maize yield; in contrast, the concentrations of OA levels were able to improve soil properties as indicated by a significant effect on pH, H+, Al3+, Ca2+, CEC, available P, and increased maize yield. An increase in soil pH due to the addition of OAs to the direct application of PR could increase Ca2+ and CEC and decrease Al3+ and H+, while increasing available P for plants. Although not significantly different, oxalic acid was able to improve the observed soil properties and maize yield, followed by citric, humic, and succinic acids. The maximum OA concentration was 126.9 ppm. We can say that the main finding of this research is that oxalic, citric, humic, and succinic acids at a concentration of 126 ppm can be applied to phosphate rock. In Indonesia, humic acid has been widely applied by farmers because it is easy to obtain. Therefore, it can be applied to phosphate rock.
1. Effect of peat water levels on greenhouse gas production in different cropping land use. DOI: 10.4067/S0718-58392024000300414 (2024)
2. Nitrogen Losses (N2O and NO3) from Mustard (Brassica juncea L.) Cropping Applied Urea Coated Bio-Charcoal. .
3. Agroforestry as an approach to rehabilitating degraded tropical peatland in Indonesia. doi:10.15243/ (2024)
4. Higher rice yield and lower greenhouse gas emissions with cattle manure amendment is achieved by alternate wetting and drying. . (2024).
5. The dynamics of the nutrients in degraded Vertic Endoaquepts of rainfed rice fields with soil ameliorant and soil tillage management. doi:10.15243/ (2023)
6. Improving Upland Acid Soil Properties And Increasing Maize Yield By Phosphate Rock Application With Organic Acids. (2024)
RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)
1. Perangkat Uji Residu Pestisida (Pesticide Residue Test Kit)
2. AgrEPIS Versi 0.1 (Agriculture Environment Pollution Information System)
Industry, Institute, or Organisation Collaboration
1. Tri Putera Jaya Sentosa.
2. Gorontalo Listrik Persada
3. PT. Sinar Mas Grup
4. APAARI
5. NARO
