100 likes | 209 Views
Rice research for upland crops. Taking place in IRRI, the International Rice Research Institute outside of Manila, Philippines Research has been ongoing for many years. Started with research on dwarf varieties that led to the green revolution in rice technology
E N D
Rice research for upland crops • Taking place in IRRI, the International Rice Research Institute outside of Manila, Philippines • Research has been ongoing for many years. • Started with research on dwarf varieties that led to the green revolution in rice technology • Recent research has focused on rice in rainfed regions where there is little or no scope for irrigation. • Land can be very dry or flooded at times, depending on location. • Research has focused on several aspects of the rice plant.
Rice research for upland crops • Focus is on developing plants that are resistant to drought and flooding. • Also focus is on developing plants that contain needed vitamins that are missing the diets of poor people, particularly vitamin A. • A lack of vitamin A can result in impaired vision and in extreme cases in blindness. • It is estimated that each year that rice without this added vitamin content will result in around 300,000 more cases of blindness in Asia.
Rice research for upland crops • This strain for vitamin A deficiency is independent of the development of high yielding varieties for rainfed areas. • So why aren’t all of these new varieties on the market right now? • Research by profit making firms is limited because they don’t profit from these new varieties that help the poor. • So most research is by IRRI and other nonprofits. • Some say that this is not the most cost effective way to deal with vitamin A deficiency. • Government approvals are needed to get the new rice distributed in individual countries. • Opponents say transgenic varieties are a health hazard
Rice research for upland crops • Already there are 3 million children with xerophatalmia, the main cause of child blindness and 11 million of clinical vitamin A deficiency and 250 million have a milder form which can increase susceptibility to measles. • Rice with vitamin A added can work with existing dwarf varieties that are already being used on farms throughout Asia. • There are questions of farmer acceptance. • How much will it cost and who will pay. • It is self-pollinating so no need to sell year after year.
Rice research for upland crops • Resistance is strongest in European countries that are influencing governments in the main rice growing areas of Asia. • India, China, Indonesia, Vietnam, Bangladesh and the Philippines would benefit the most since they grow a lot of rice and they have a lot of poor people. • Estimates are that it will take years before this new variety with vitamin called Golden Rice will be adopted by large numbers of farmers. • Why? • The rich countries are not engaged – Europeans don’t like genetically modified crops and there is resistance in Japan.
Rice research for upland crops • There is bureaucratic red tape and fear that it could cause some kind of damage to peoples health and to the environment. • For development of other rice strains that will resist drought and flood there have also been breakthroughs. • Also promising developments for varieties that will not need pesticide or herbicides.
Developments in cotton • New cotton varieties, called bt cotton, have been developed which are pest resistant • These varieties also are potentially higher yielding. • They have been adopted in several countries with goods results. • In some other countries results have not been so good. • Through genetic engineering, the bt gene can be "inserted" into cotton • The plant produces its own bt toxin. • Bt cotton provide control of tobacco budworm, pink bollworm, and cotton bollworm. • In 1998, bt cotton accounted for over a quarter of U.S. harvested cotton acreage.
Developments in cotton • In 1998, bt cotton accounted for over a quarter of U.S. harvested cotton acreage. • China has begun to adopt Bt cotton in the past decade. • Yields are about 5 percent higher than traditional varieties. • No need for pesticides. • In recent years some evidence that pests have adapted and are beginning to come back.
Developments in cotton • In India cotton is grown on just 5% of agricultural land. • However, more than 55% of all pesticides used in India are used in cotton production. • Pest infestation has dramatically increased in recent years, owing to the intensified use of chemicals. • Bt cotton seems to provide a solution. • Time will tell whether resistance will build up in the various pests that attack cotton. • Some Asian countries are planting illegally.
Developments in cotton • Monsanto is the main producer of Bt seeds. • Also being adopted in India and Indonesia. • Soil scientists argue that proper controls and monitoring have not been put in place by local authorities in developing countries. • Monsanto is not helping in the effort to monitor and control use of Bt cotton. • There are many web sites that give different opinions and analysis of Bt cotton.