ASCOT Library Zabali Campus

Physical aspects of soil management for rice-based cropping system - D. J. Greenland –
Interpreting physical aspects of wetland soil management from soil taxonomy - H. Eswaran –
Evaluation of the physical environment for rice cultivation - C. Sys –
Soils on which rice-based cropping systems are practices - P. M. Driessen and F. R. Moorman –
Physical properties of mineral soils affecting rice-based cropping systems - S. S. Prihar, B. P. Ghildyal, D. K. Painuli, and H. S. Sur –
Physical properties of peat soils affecting rice-based cropping systems - S. A. M. Bouman and P. M. Driessen –
Geostatistical techniques and spatial variability of soil physical properties - A. K. Bregt –
Physical measurements in lowland soils: techniques and standardizations - N. C. Keersebilck and S. Soeprapto –
Hydrology of ricelands - Y. Kaida –
Soil-water reltions in rice-based cropping systems - F. R. Bolton, R. A. Morris, and P. Vivekanandan –
Underdrainage of lowland rice fields - T. Tabuchi –
Mineralogy and surface properties of the clay fraction affecting soil behavior and management - R. Brinkman –
Influence of salinity and alkalinity on properties and management of ricelands - I. P. Abrol, D. R. Bhumbla, and O. P. Meelu –
Morphology of lowland soils and flow of water and gases - J. Bouma –
Effects of puddling on soil physical properties and processes - P. K. Sharma and S. K. De Datta –
Aggregate classification and soil physical properties for rice-based cropping systems - W. W. Emerson and R. C. Foster –
Structure, structural stability, and natural restructuring of lowland rice soils - M. Saito –
Soil mechanics on relation to tillage, implements, and root penetration in lowland soils - A. R. Dexter and T. Woodhead –
Tillage in lowland rice-based cropping systems - R. Lal –
Implement design for lowland rice-based cropping systems - G. Spoor, B. J. Cochran, and C. Chahakphak –
Simulation models for tillage and soil physical variables - T. A. McMahon, M. A. Porter, A. K. Turner –
Soil-water management in rainfed rice-based cropping systems - S. S. Hundal and V. S. Tomar –
Subsurface drainage of lowland rice fields in China - Si-Tu Soong and Zhang Wei –
Physical aspects of the root and seed environment in lowland soils - N. T. Singh, G. C. Aggarwal, and T. Woodhead –
Root behavior: field and laboratory studies for rice and nonrice crops - S. Hasegawa, M. Thangaraj, and J. C. O'Toole –
Water use and water use efficiency under different management systems for upland crops - G. Maesschalck, H. Verplancke, and M. De Boodt.

"Asian lowlands have for many centuries produced enough rice for very large populations. Recently, food production has increased slightly more rapidly than population growth. Increases were through combinations of expanded irrigation, high yielding varieties, chemical fertilizers, and cropping intensification. However, they will However, they will not necessarily continue. The recent increases were primarily from lands with fertile soil and favorable climate. There are few opportunities for developing new land. Rice and other crops must now be grown where water is not well controlled, soils are less fertile, or there are physical constraints such as compacted soil layers. To increase production in these areas will be difficult.
In Africa and parts of South America, population growth exceeds increases in food production. Governments in those continents are looking increasingly to rice and rice-based cropping systems for the extra food that they need now and shall need more pressingly in the future. As in Asia, there are soil physical constraints to rapid, large-scale expansion of production from rice-based systems.
Thus, with a world demand for rice that is expected to grow by an annual 3% for the next 15 yr, it is essential that improved soil and water management methods be developed and adopted for ricelands, both to increase food production and to avoid soil erosion and degradation.
These issues and problems were addressed in the Workshop on Physical Aspects of Soil Management in Rice-based Cropping Systems at IRRI 10-14 Dec 1984. It was attended by 55 participants from 21 countries and by several IRRI staff members.
IRRI wishes to thank for their support the Agency for Cooperation in Development of the Belgian Government, which provided a large part of the needed funds, the United Nations Development Programme, the United Nations Environment Programme, the International Board for Soil Research and Management, and the national governments that sponsored individual participants.
T. Woodhead was workshop convenor and scientific editor. He was assisted by a committee comprising S.I. Bhuiyan, C.W. Bockhop, G. Boje-Klein, S.K. De Datta, D.P. Garrity, D.J. Greenland, R.A. Morris, H. Murray-Rust, H.U. Neue, L.R. Oldeman, J.C. O'Toole, F.N. Ponnamperuma, V.M. Segovia, and E.A. Tout. The proceedings were edited by E.A. Tout assisted by G.S. Argosino. The proceedings include 26 papers, 19 poster abstracts, and recommendations for future research, training, and coordination of programs.
Participants concluded that there is significant potential to develop practical technologies that will increase food production from lowland rice-based cropping systems. Essential to these increases will be applied research on those physical aspects of soil management that now limit food production."
- M.S. Swaminathan Director General