The over use or improper use of irrigation without drainage encouraged waterlogging, resulting in salinity build-up and other mineral toxicities. A methodology for cropping systems research was proposed in This also raises a serious socio-political issue. Or do they become, as they have in the US, a permanent, and expensive, program? This requires substantial improvement to the system of collection and dissemination of information on rice, its production factors, and its technologies as well as the modification of the extension systems in many countries. Systems thinking and practices in the education of agriculturalists.
Photographer Scott Gable documents the struggle of Asian farm workers
Asian Rice Farmer
Even an ambitious programme cannot stop the use of self-grown seeds now that CGIAR system and most countries have rejected Terminator Technology by the farmers, thus knowledge can play its part. The scope of area expansion in some countries is offset by the reduction in rice lands in major rice producing countries. The success story of Bangladesh in becoming a self-sufficient country with stable yield by using Boro rice instead of deepwater rice is a case in point. In addition, growth rate in fertilizer usage has leveled off in general and use of modern varieties is also plateauing with major producers. Role of Credit, Technology and Public Policy. Politically, sound lower rice prices are welcome but who is losing? Zandsta outlined the initial phases of development and research of a rice system since the s.
An emerging model of a systems agriculturalist. Rice production is also vulnerable to climatic fluctuations, since half of Asia's rice crop is rainfed and depends on seasonal monsoons. The engineering of new agricultural systems is far less commonly practised, probably due to the difficulty in defining all of the variables involved in purposeful activities. Recommended articles Citing articles 0. But Talhelm had a very different experience once he moved north to Beijing, including being praised for his skill at speaking Mandarin Chinese by a museum curator at the direct expense of his roommate who was also attempting to communicate. There has been a rapid increase in the availability of improved and short duration varieties, early crop establishment techniques, pest management alternatives, farm machinery and supplemental irrigation.