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ผลงานตีพิมพ์ในวารสารวิชาการSite-specific Nutrient Management of Irrigated Rice in the Central Plain of Thailandผู้แต่ง: Dr.Tasnee Attanandana, Professor ,  Kongton, S, Boonsompopphan, B, Polwatana, A, Verapatananirund, P, Yost, R, วารสาร:  
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ผลงานตีพิมพ์ในวารสารวิชาการPhosphorus-Sorption Characteristics and Phosphorus Buffer Coefficients of Some Important Soils in Lao PDRผู้แต่ง:Souliyavongsa, Xaysathid, Yampracha, Sukunya, Dr.Tasnee Attanandana, Professor, Yost, Russell, Kanghae, Piboon, วารสาร: |
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ผลงานตีพิมพ์ในวารสารวิชาการImproving multi-soil-layer (MSL) system remediation of dairy effluentผู้แต่ง:Pattnaik, R, Yost, RS, Porter, G, Masunaga, T, Dr.Tasnee Attanandana, Professor, วารสาร:  |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Nitrogen Fertilizer Response of Maize on Some Important Soils from DSSAT Software Prediction) ผู้เขียน:Nivong SIPASEUTH, ดร.ทัศนีย์ อัตตะนันทน์, ศาสตราจารย์, Russell Yost สื่อสิ่งพิมพ์:pdf AbstractTo lessen the environmental impact and cost of maize production, the efficient use of nitrogen fertilization is very important. Currently, the DSSAT software has been used to predict N fertilizer requirement of maize. However, the requirement of maize be to N fertilizer in some soils have been found to be lower than the amounts predicted by DSSAT. To use the predicted N fertilizer in some important maize soils of Thailand and Laos efficiently, field experiments were conducted on 4 representative sites. Two sites were on Lop Buri (Lb) and Pak Chong (Pc) soil series in Thailand, and the other two were on Saythong (St) and Bachieng (Bc) soil series in the Lao PDR. The results indicated that grain yields of maize grown on St and Bc soil series were increased with higher rates of N fertilizer while there was no response to nitrogen applications to maize grown on Lb and Pc series soils. These effects were attributed to N mineralization or nitrate release of the soils. From this study, the nitrate (NO3 - -N) release of Pc and Lb soil series were higher than those of St and Bc soil series, especially at the first period of incubation study in the laboratory. In the case of St and Bc soil series, the nitrate release of Bc soil was higher than that released from St soil, thus, resulting in the response of maize at the lower rate of N fertilization on Bc soil series. |
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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Lime Application to Two Acidic Upland Soils for Soybean Production in Champasak Province, Lao PDR) ผู้เขียน:วงวิลัย เพงสุวรรณา, ดร.ทัศนีย์ อัตตะนันทน์, ศาสตราจารย์, Russell S. Yost สื่อสิ่งพิมพ์:pdf AbstractLow yield of soybean in the Lao People’s Democratic Republic (Lao) have been reported, where soil acidity could be one of the limiting factors affecting crop growth. In Champasak province, Lao, the effect of lime application on soybean production was studied on two acid upland soils, which varied in their chemical and physical properties. The NuMaSS software predicted that lime was needed and that the soil at the Bachieng site needed more lime than the Hoythakoune site. The results illustrated that liming had beneficial effects on soybean. The highest grain yields of soybean at the Bachieng and Hoythakoune site were 2,206 and 2,102 kg ha-1 compared with the control treatment, which yielded 1,462 and 962 kg ha-1, respectively. The results of the study indicated that lime had a strong effect on increasing soil pH, from 4.4 to 5.3 and from 4.7 to 6.0 for the Bachieng and Hoythakoune sites, respectively). The appropriate liming rates for soybean production at the Bachieng and Hoythakoune sites were about 1,710 and 550 kg CaCO3 ha-1, respectively. An economic dominance analysis indicated that the net return from liming was very high for both the Bachieng ($ 402 ha-1) and Hoythakoune ($ 503 ha-1) sites. |