Your search found 13 records
1 Noble, A. D.; Moody, P.; Guodao, L.; Ruaysoongnern, S.; Zhiping, Q.; Berthelsen, S. 2003. Quantification and remediation of soil chemical degradation in Tropical Australia, China and Thailand. Pedosphere, 13(1):31-39.
(Location: IWMI-HQ Call no: P 6300 Record No: H031672)
2 Noble, A. D.; Ruaysoongnern, S.; Sukchan, S.; Berthelsen, S.; Webb, M. 2003. Quantifying soil chemical degradation associated with changed land use and the development of an acidity risk map for Northeast Thailand. In IWMI South East Asia, KU – IWMI Seminar on Scientific Cooperation, Kamphol Adulavidhaya Conference Room, Kasetsart University, Bangkok, Thailand, 26 March 2003. pp.86-102.
(Location: IWMI-HQ Call no: IWMI 631.7 G750 IWM Record No: H034255)
(0.23 MB)
3 Senanarong, N.; Cheuwchoom, P.; Lusanandana, C.; Tangpoonpol, S.; Atichart, S.; Pongkanjana, A.; Srihaban, P.; Singhapong, T.; Patanothai, A.; Toomsan, B.; Ruaysoongnern, S.; Rego, T. J. 2003. Improving management of natural resources for sustainable rainfed agriculture in northeastern Thailand. In Wani, S. P.; Maglinao, A. R.; Ramakrishna, A.; Rego, T. J. (Eds.), Integrated watershed management for land and water conservation and sustainable agricultural production in Asia: Proceedings of the ADB-ICRISAT-IWMI Project Review and Planning Meeting, 10-14 December 2001, Hanoi, Vietnam. Andhra Pradesh, India; Colombo, Sri Lanka; Manila, Philippines: ICRISAT; IWMI; ADB. pp.123-133.
Rain-fed farming ; Natural resources ; Watersheds ; Erosion ; Soil degradation ; Constraints ; Cropping systems ; Participatory rural appraisal ; Farmer participation ; Field crops ; Fertilizers / Thailand
(Location: IWMI-HQ Call no: IWMI 333.91 G570 WAN Record No: H034986)
(10.29 MB)
4 Noble, Andrew D.; Ruaysoongnern, S.; Penning de Vries, Frits W. T.; Hartmann, C.; Webb, M. J. 2004. Enhancing the agronomic productivity of degraded soils in Northeast Thailand through clay-based interventions. In Seng, V.; Craswell, E.; Fukai, S.; Fischer, K. (Eds.), Water in agriculture: Proceedings of a CARDI International Conference “Research on Water in Agricultural Production in Asia for the 21st Century” Phnom Penh, Cambodia, 25-28 November 2003. Canberra, Australia: ACIAR. pp.147-160.
(Location: IWMI-HQ Call no: 631.7.2 G000 SEN, IWMI 631.4 G750 NOB Record No: H032797)
5 Ruaysoongnern, S.; Noble, A. D. 2001. Accumulative nutrient balance on a toposequence of sloping land used for upland crop production in northeast Thailand. In Simmons, Robert W.; Noble, Andrew D.; Lefroy, R. D. B. (Eds.). International Workshop on Nutrient Balances for Sustainable Agricultural Production and Natural Resource Management in Southeast Asia, Bangkok, Thailand, 20-22 February 2001: Selected papers and presentations. Bangkok, Thailand: IWMI; CIAT. 8p.
(Location: IWMI-HQ Call no: CD Col Record No: H036282)
6 Noble, Andrew; Ruaysoongnern, S.; Sukchan, S.; Berthelsen, S. 2004. Role of soil resource data in assessing soil acidification risk: An example from Northeast Thailand. In Eswaran, H.; Vijarnsorn, P.; Vearasilp, T.; Padmanabhan, E. (Eds.). Innovative techniques in soil survey: Developing the foundation for a new generation of soil resource inventories and their utilization. Bangkok, Thailand: Land Development Department. pp.333-340.
(Location: IWMI-HQ Call no: 631.4 G000 ESW Record No: H037569)
7 Penning de Vries, Frits; Boelee, Eline; Butterworth, J.; Cousins, T.; Duran, A.; Hagmann, J.; Mintesinot, B.; Morardet, Sylvie; Moriarty, P. B.; Restrepo, I.; Ruaysoongnern, S.; Scott, Christopher; Suryarwanshi, S.; Smits, S.; van Koppen, Barbara; Yoder, B. 2005. Learning alliances for the broad implementation of an integrated approach to multiple sources, multiple uses and multiple users of water. Manuscript for presentation at the International Conference on 'Integrated Assessment of Water Resources and Global Change: A North-South Analysis', February 2005, Bonn, Germany (http://www.zef.de/watershed2005). Submitted 25/2/2005 revised 31/8/2005. 17p.
(Location: IWMI-HQ Call no: IWMI 333.91 G000 PEN Record No: H038734)
8 Suzuki, Shinji; Noble, Andrew; Ruaysoongnern, S.; Chinabut, N. 2007. Improvement in water-holding capacity and structural stability of a sandy soil in northeast Thailand. Arid Land Research and Management, 21(1):37-49.
(Location: IWMI-HQ Call no: IWMI 631.4 G750 SUZ Record No: H039894)
Light textured sandy soils in northeast Thailand are often highly weathered and degraded resulting in low nutrient and water holding capacities. The latter is further complicated by the structural instability of these soils. Field based soil amelioration studies were undertaken in order to evaluate local traditional practices currently adopted by farmers and innovative approaches to improve the productivity of these soils. The treatments included: composted leaf litter, termite mound material, and bentonite. In the present study, physical properties associated with water holding capacity and soil structural stability of an upland soil of the Satuk series in Northeast Thailand were investigated two years after the application of these amendments. Although changes in silt and clay fraction were small, the application of these amendments enhanced porosity and altered the pore size distribution resulting in an increase in the available water content for crop growth. In particular, increases in the available water content were remarkably higher under termite mound material (0.21 m3 m-3) and bentonite (0.19 m3 m- 3) treatments when compared to the control (0.14 m3 m-3). However, soil structural stability remained poor for the compost and termite mound material treatments, while the structural stability was enhanced for the bentonite treatment. Enhanced soil structural stability observed in the bentonite treatment accounted for the persistence in increased water holding capacity, and this will have positive benefits to the rainfed cropping systems that are susceptible to periodic drought stress, thereby reducing risk of crop failure associated with low water holding capacity.
9 Noble, Andrew; Suzuki, S.; Soda, Wannipa; Ruaysoongnern, S.; Berthelsen, S. 2008. Soil acidification and carbon storage in fertilized pastures of Northeast Thailand. Geoderma, 144: 248–255.
Soil texture ; Soil properties ; Sandy soils ; Acidification ; Nitrogen fertilizers ; Carbon ; Pastures ; Feeds ; Andropogon gayanus ; Stylosanthes guianensis / Thailand
(Location: IWMI HQ Call no: 631.4 G750 NOB Record No: H040921)
10 Saleth, Rathinasamy Maria; Inocencio, Arlene; Noble, Andrew D.; Ruaysoongnern, S.. 2009. Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand. Colombo, Sri Lanka: International Water Management Institute (IWMI). 30p. (IWMI Research Report 130) [doi: https://doi.org/10.3910/2009.130]
Soil improvement ; Impact assessment ; Research projects ; Soil fertility ; Sandy soils ; Water holding capacity ; Clay soils ; Soil water relations ; Soil management ; Farming systems ; Crop yield ; Vegetable crops ; Rice ; Sorghum ; Models ; Statistical methods ; Cost benefit analysis ; Economic analysis ; Economic aspects / Thailand
(Location: IWMI HQ Call no: IWMI 631.422 G750 SAL Record No: H042267)
(427 KB)
Declining productivity of agricultural soils in Northeast Thailand is a challenge facing land managers and farmers. A program was initiated in 2002 to investigate the potential role of incorporating clay-based materials into degraded soils as a means of enhancing productivity. This research report attempts to provide an ex-post assessment of the field level impact and economic viability of this approach, using the empirically derived estimates of the average income impacts that the application of bentonite or clay technology has generated among farm communities in Northeast Thailand. From an exclusive IWMI perspective, the impact evaluation suggests that the program has a net present value (NPV) of US$0.41 million with a benefit-cost ratio (BCR) of 2.44 for the sample, and a NPV of US$21 million with a BCR of 75 for the region.
11 Saleth, Rathinasamy Maria; Inocencio, A.; Noble, Andrew D.; Ruaysoongnern, S.. 2009. Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand. Journal of Development Effectiveness, 1(3):336-352. [doi: https://doi.org/10.1080/19439340903105022]
Bentonite ; Clay soils ; Farming systems ; Impact assessment ; Water holding capacity ; Soil water relations ; Soil management ; Crop yield ; Vegetable crops ; Rice ; Sorghum ; Models ; Statistical methods ; Cost benefit analysis ; Economic analysis / Thailand
(Location: IWMI HQ Call no: e-copy only Record No: H034809)
(0.42 MB)
Using survey data collected from 250 farmers, this paper evaluates the impact of the Soil Remediation Research Project (SRRP) undertaken by International Water Management Institute (IWMI) in Northeast Thailand during 2002–2005. SRRP has demonstrated and promoted the application of clay as a quick and low-cost means for improving the fertility and water holding capacity of sandy soils. The impact evaluation suggests that the SRRP has a net present value (NPV) of US$0.7 million with a benefit–cost ratio (BCR) of 3.1 for the sample context and an NPVof US$99.5 million with a BCR of 317.7 for the larger context of the region.
12 Penning de Vries, F.; Ruaysoongnern, S.. 2010. Multiple sources of water for multiple purposes in northeast Thailand. Colombo, Sri Lanka: International Water Management Institute (IWMI). 29p. (IWMI Working Paper 137) [doi: https://doi.org/10.5337/2010.208]
Water use ; Multiple use ; Water supply ; Farm ponds ; Farmers attitudes ; Households ; Farm size ; Rural development ; Surveys ; Simulation models ; Decision making ; Supplemental irrigation / Thailand
(Location: IWMI HQ Call no: IWMI 631.7 G750 PEN Record No: H043565)
(1 MB)
Many farms in tropical countries suffer from droughts in the dry season and sometimes even in the rainy season. In order to significantly increase the capacity to store water, the grassroots Farmer Wisdom movement in Northeast Thailand innovated pond construction on homesteads. This Working Paper first documents how pond water is mainly used to irrigate crops and fruit trees, and is also used for livestock or fish, and for domestic uses, even if ample piped water is available. Households were also found to harvest rainwater from roofs; take water from canals and streams; lift water manually from shallow wells and with electric pumps from deep wells; channel run-off from roads to paddy fields; use precipitation as green water on fields; and buy bottled water. Most households combine at least six of these nine water sources. The second part describes scenarios and some outcomes of a new simulation model, BoNam. This model provides guidelines for the optimal size and site of such ponds according to biophysical factors (weather, soil and crops), socioeconomic factors (prices, availability of labor and off-farm income) and household aspirations.
13 Armour, J. D.; Berthelsen, S.; Ruaysoongnern, S.; Moody, P. W.; Noble, Andrew D. 2005. Remediation of soil acidification by form of nitrogen fertilizer on grass swards of Australia and Thailand. In International Union of Soil Sciences (IUSS); Institut de Recherche pour le Developpement (IRD); Thailand. Land Development Department (LDD); International Water Management Institute (IWMI); FAO. Regional Office for Asia and the Pacific (FAO RAP); Khon Kaen University. Faculty of Agriculture. Management of tropical sandy soils for sustainable agriculture: a holistic approach for sustainable development of problem soils in the tropics. Proceedings of the First Symposium on Management of Tropical Sandy Soils for Sustainable Ariculture, Khon Kaen, Thailand, 27 November – 2 December 2005. Bangkok, Thailand: FAO Regional Office for Asia and the Pacific (FAO RAP). pp.135-139.
Soil profiles ; Acidification ; Grasses ; Pastures ; Species ; Cropping systems ; Nitrogen fertilizers ; Soil pH ; Alkalinity ; Acrisols / Australia / Thailand / Mareeba / Tully / Chiang Yuen
(Location: IWMI HQ Call no: 630 G000 INT Record No: H047325)
(0.36 MB) (16.9 MB)
Acidification of soil profiles from legume and N fertilized crops is a serious sustainability threat. Under tropical conditions of Northeast Thailand and Northern Australia, acidification to >90 cm has been recorded in Stylosanthes and Leucaena based pasture systems. Acidification has also been measured in other Australian cropping systems fertilized with urea or ammonium forms of N. The major processes contributing to what could be termed anthropogenic acidification are removal of base cations in the harvested product and leaching below the root zone of nitrate from ammonium and urea N fertiliser or legumes resulting in an accumulation of protons in surfaces horizons. If prophylactic applications of lime are not undertaken, acid generation in surface horizons will progressively move down the profile inducing subsoil acidification. Subsoil acidity is often difficult to correct using conventional applications of liming products. Field experiments with pastures on Acrisols in Northeast Australia (two sites) and Northeast Thailand (one site) compared the rates of alkalisation or acidification from N applied as nitrate or as urea (Australia) or ammonium sulphate (Thailand). Soil pH increased where N was applied as nitrate and decreased where N was applied as urea or ammonium sulphate. At one of the sites in Australia, regular applications of N as nitrate at 350 kg N ha-1 year-1 were made to irrigated Digitaria melanjiana cv Jarra. This significantly increased soil pH (1:5 0.01 M CaCl2) by up to 0.5 units to a depth of 0.90 m over a period of 4 years when compared to bare soil. The alkalisation of the profile was equivalent to 2.7 t/ha of calcium carbonate distributed evenly down the profile. Urea at the same rate of N decreased soil pH at 20-50 cm by 0.2 units. Similar but smaller changes were measured at the other Australian site (Brachiaria decumbens) and the site in Thailand (Andropogon gayanus cv Carimagua (Gamba grass). Treatment effects at these sites were restricted by time (1 year) or seasonal conditions that limited the number of N applications that could be applied (290 kg N/ha over 3 years) at the Thai site. The research has clearly demonstrated that nitrate N fertilizer can rapidly correct soil acidity down the soil profile to 0.9 m and this is attributed to the release of alkali from roots as nitrate is taken up. Such a strategy may be an effective approach to addressing subsoil acidification where surface applications of lime are ineffective and profile modification is cost prohibitive.
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