Valensi Kautsar

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Books

Kautsar, V., Cheng, W., Tawaraya, K., Susumu, Y., Toriyama K. & Kobayashi, K. (2021). Long-term of organic rice cultivation with internal nutrient cycling in Japanese Andosols. In FAO and ITPS (Eds.) Recarbonizing global soils: A technical manual of recommended management practices, Volume 6. Forestry, Wetlands, Urban Soil - Case-studies. Food and Agriculture Organization of the United Nations, Rome, Italy. 157–166. ISBN: 978-92-5-134899-4. http://www.fao.org/3/cb6605en/cb6605en.pdf.

Kautsar, V. & Faizah K. (2021.) Agrostatistika: Pengolahan Data dengan SPSS (Agriculture Statistics: Data Management using SPSS). INSTIPER Press. Yogyakarta. ISBN: 978-623-5979-01-4. (in Bahasa Indonesia)

Journal Publications

Kautsar V., Tang S, Kimani SM, Tawaraya K, Wue J, Toriyama K, Kobayashi K, & Cheng W. (2022) Carbon decomposition and nitrogen mineralization of foxtail and milk vetch incorporated into paddy soils for different durations of organic farming. Submitted to: Soil Science and Plant Nutrition. 68(1): 158-166. https://doi.org/10.1080/00380768.2021.2024424. (Q1 JOURNAL)

Kautsar, V., Cheng, W., Tawaraya, K., Hattori, S., Yamada, S., Kobayashi, K., & Toriyama, K. (2020). Air-drying and drying-rewetting effects in Japanese Andosols subjected to long-term organic rice farming. Soil Science and Plant Nutrition, 66(5), 714-723. https://doi.org/10.1080/00380768.2020.1816123. (Q1 JOURNAL)

Kautsar, V., Cheng, W., Tawaraya, K., Yamada, S., Toriyama, K., & Kobayashi, K. (2020). Carbon and nitrogen stocks and their mineralization potentials are higher under organic than conventional farming practices in Japanese Andosols. Soil Science and Plant Nutrition, 66(1), 144-151. https://doi.org/10.1080/00380768.2019.1705739. (Q1 JOURNAL)

Maimunah, M.A., Kautsar, V., Bimantara, P.O., Kimani, S.M., Torita, R., Tawaraya, K., Murayama, H., Utami, S.N.H., Purwanto, B.H., Cheng, W. (2021). Weeding Frequencies Decreased Rice–Weed Competition and Increased Rice N Uptake in Organic Paddy Field. Agronomy, 11, 1904. https://doi.org/10.3390/agronomy11101904. (Q1 JOURNAL)

Bimantara, P.O., Kimani, S.M., Kautsar, V., Egashira, H., Kikuchi, S., Tawaraya, K., & Cheng, W. (2022). Seasonal changes in soil properties caused by slash and burn agriculture practice in a humid temperate region of northeast Japan. Soil Science and Plant Nutrition. 68(1): 81-87. https://doi.org/10.1080/00380768.2021.2015237 (Q1 JOURNAL)

Kusumawardhani, P., Bimantara, P.O., Guigue, J., Haga, C., Sasaki, Y., Kautsar, V., Kimani, S.M., Nguyen-Sy, T., Tang, S., Utami, S.N.H., Tawaraya, K., Sugawara, K., & Cheng, W. (2022). Carbon and Nitrogen Dynamics as Affected by Land-Use and Management Change from Original Rice Paddies to Orchard, Wetland, Parking Area and Uplands in a mountain village located in Shonai region, Northeast Japan. Soil Science and Plant Nutrition. 68 (1): 114-123. https://doi.org/10.1080/00380768.2021.2017235. (Q1 JOURNAL)

Utami, A. I., Bimantara, P. O., Umemoto, R., Sabri, R. K., Kautsar, V., Tawaraya, K., ... & Cheng, W. (2020). Incorporation of winter grasses suppresses summer weed germination and affects inorganic nitrogen in flooded paddy soil. Soil Science and Plant Nutrition, 66(2), 389-397. https://doi.org/10.1080/00380768.2020.1725914. (Q1 JOURNAL)

Safitri, L., Hermantoro, H., Purboseno, S., Kautsar, V., Saptomo, S. K., & Kurniawan, A. (2019). Water footprint and crop water usage of oil palm (Eleasis guineensis) in Central Kalimantan: Environmental sustainability indicators for different crop age and soil conditions. Water, 11(1), 35. https://doi.org/10.3390/w11010035. (Q1 JOURNAL)

Maimunah, M.A., Kautsar, V., Bimantara, P.O., Kimani, S.M., Utami, A.I., Sabri, R.K., Tawaraya, K., Utami, S.N.H., Purwanto, B.H., Cheng, W. 2022. Weeding Frequencies Improve Soil Available Nitrogen in Organic Paddy Field. Planta Tropika, 10(1): 45-54. https://doi.org/10.18196/pt.v10i1.12707.

Kimani, S.M., Bimantara, P.O., Kautsar, V., Tawaraya, K., Cheng, W. (2021) Poultry litter biochar application in combination with chemical fertilizer and Azolla green manure improves rice grain yield and nitrogen use efficiency in paddy soil. Biochar, 3(4): 591–602. https://doi.org/10.1007/s42773-021-00116-z.

Safitri, L., Kautsar, V., Purboseno, S., Wulandari, R. K., & Ardiyanto, A. (2018). Water Footprint Analysis of Oil Palm:(Case Study of the Pundu Region, Central Borneo). International Journal of Oil Palm, 1(3), 95-102.

Safitri, L., Purboseno, S., Kautsar, V., Saptomo, S. K., & Ardiyanto, A. (2019, May). Oil Palm Water Balance; a tools for Analysing Oil Palm Water Footprint and Root Water Uptake Distribution in Root Zone. In IOP Conference Series: Earth and Environmental Science (Vol. 260, No. 1, p. 012040). IOP Publishing.

Safitri, L., Suryanti, S., Kautsar, V., Kurniawan, A., & Santiabudi, F. (2018, Mar). Study of oil palm root architecture with variation of crop stage and soil type vulnerable to drought. In IOP Conference Series: Earth and Environmental Science (Vol. 141, No. 1, p. 012031). IOP Publishing.

Safitri, L., Purboseno, S., Kautsar, V., Wijayanti, Y., & Ardiyanto, A. (2018). Development of oil palm water balance tool for predicting water content distribution in root zone. International Journal of Engineering Technology and Sciences, 5(2), 38-49.