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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 repor...


Saleth, Rathinasamy MariaInocencio, ArleneNoble, A.D.Ruaysoongnern, Sawaeng[Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand]Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand
Noble, A.D.Ruaysoongnern, SawaengSukchan, S.Berthelsen, S.Webb, M.[Quantifying soil chemical degradation associated with changed land use and the development of an acidity risk map for Northeast Thailand]Quantifying soil chemical degradation associated with changed land use and the development of an acidity risk map for Northeast Thailand

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...


Penning de Vries, Frits W.T.Ruaysoongnern, Sawaeng[Multiple sources of water for multiple purposes in northeast Thailand]Multiple sources of water for multiple purposes in northeast Thailand

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...


Saleth, Rathinasamy MariaInocencio, A.Noble, A.D.Ruaysoongnern, Sawaeng[Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand]Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand
Noble, A.D.Ruaysoongnern, SawaengSukchan, S.Berthelsen, S.[Role of soil resource data in assessing soil acidification risk: An example from Northeast Thailand]Role of soil resource data in assessing soil acidification risk: An example from Northeast Thailand
Noble, A.D.Ruaysoongnern, SawaengPenning de Vries, Frits W.T.Hartmann, C.Webb, M. J.[Enhancing the agronomic productivity of degraded soils in Northeast Thailand through clay-based interventions]Enhancing the agronomic productivity of degraded soils in Northeast Thailand through clay-based interventions

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 m...


Armour, J. D.Berthelsen, S.Ruaysoongnern, Sawaeng[Remediation of soil acidification by form of nitrogen fertilizer on grass swards of Australia and Thailand]Remediation of soil acidification by form of nitrogen fertilizer on grass swards of Australia and Thailand

Productivity decline occurs in many agronomic systems due to loss of soil organic matter and a consequent decline in soil fertility. This is pronounced in light textured soils, which even in their pristine state can have low levels of fertility. High temperatures and leaching conditions in tropic...


Berthelsen, S.Noble, A.D.Ruaysoongnern, SawaengWebb, M.Hengfu, H.Jiexiang, Y.[Addition of clay based soil ameliorants to light textured soils to reduce nutrient loss and increase crop productivity]Addition of clay based soil ameliorants to light textured soils to reduce nutrient loss and increase crop productivity
Noble, A.D.Suzuki, S.Soda, WannipaRuaysoongnern, SawaengBerthelsen, S.[Soil acidification and carbon storage in fertilized pastures of Northeast Thailand]Soil acidification and carbon storage in fertilized pastures of Northeast Thailand

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 evalua...


Suzuki, ShinjiNoble, A.D.Ruaysoongnern, SawaengChinabut, N.[Improvement in water-holding capacity and structural stability of a sandy soil in northeast Thailand]Improvement in water-holding capacity and structural stability of a sandy soil in northeast Thailand

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