Rice is the seed of the grass species Oryza sativa or less commonly Oryza glaberrima. The name wild rice is usually used for species of the genera Zizania and Porteresia, both wild and domesticated, although the term may also be used for primitive or uncultivated varieties of Oryza.
The Green Revolution, or the Third Agricultural Revolution, was a period of technology transfer initiatives that saw a dramatic increase in crop yields and agricultural production. These changes in agriculture began in developed nations following WWII and continued globally until the late 1980s. Starting in the late 1960s farmers began adopting new technologies into farming such as, high-yielding varieties (HYVs) of cereals, especially dwarf wheat and rice. Moreover, agriculture began moving towards the widespread usage of chemical fertilizers, pesticides, and a controlled water-supply and newer methods of cultivation, including mechanization. All of these together were seen as a 'package of practices' to supersede 'Traditional' technology and to be adopted as a whole.
The International Rice Research Institute (IRRI) is an international agricultural research and training organization with its headquarters in Los Baños, Laguna, in the Philippines, and offices in seventeen countries. IRRI is known for its work in developing rice varieties that contributed to the Green Revolution in the 1960s which preempted the famine in Asia.
CGIAR is a global partnership that unites international organizations engaged in research about food security. CGIAR research aims to reduce rural poverty, increase food security, improve human health and nutrition, and sustainable management of natural resources. It is carried out at 15 centers that collaborate with partners from national and regional research institutes, civil society organizations, academia, development organizations, and the private sector. These research centers are around the globe, with most in the Global South and Vavilov Centers of agricultural crop genetic diversity.
Theoretical production ecology tries to quantitatively study the growth of crops. The plant is treated as a kind of biological factory, which processes light, carbon dioxide, water, and nutrients into harvestable parts. Main parameters kept into consideration are temperature, sunlight, standing crop biomass, plant production distribution, nutrient and water supply.
The brown planthopper (BPH), Nilaparvata lugens (Stål) is a planthopper species that feeds on rice plants. These insects are among the most important pests of rice, which is the major staple crop for about half the world's population. They damage rice directly through feeding and also by transmitting two viruses, rice ragged stunt virus and rice grassy stunt virus. Up to 60% yield loss is common in susceptible rice cultivars attacked by the insect. The BPH is distributed throughout Australia, Bangladesh, Bhutan, Burma (Myanmar), Cambodia, China, Fiji, India, Indonesia, Japan, North and South Korea, Laos, Malaysia, India, Nepal, Pakistan, Papua New Guinea, Philippines, Sri Lanka, Taiwan, Thailand, and Vietnam. Their alternative host plant other than rice is Leersia hexandra.
Hybrid rice is a type of Asian rice that has been crossbred from two very different parent varieties. As with other types of hybrids, hybrid rice typically displays heterosis or "hybrid vigor", so when grown under the same conditions as comparable purebred rice varieties, it can produce up to 30% more yield. To produce hybrid seeds in large quantity, a purebred sterile rice variety is fertilized with fertile pollen from a different variety. High-yield crops, including hybrid rice, are one of the most important tools for combatting worldwide food crises.
Intensive crop farming is a modern industrialized form of crop farming. Intensive crop farming's methods include innovation in agricultural machinery, farming methods, genetic engineering technology, techniques for achieving economies of scale in production, the creation of new markets for consumption, patent protection of genetic information, and global trade. These methods are widespread in developed nations.
Agriculture is the largest employment sector in Bangladesh, making up 14.2 percent of Bangladesh's GDP in 2017 and employing about 42.7 percent of the workforce. The performance of this sector has an overwhelming impact on major macroeconomic objectives like employment generation, poverty alleviation, human resources development, food security, and other economic and social forces. A plurality of Bangladeshis earn their living from agriculture. Due to a number of factors, Bangladesh's labour-intensive agriculture has achieved steady increases in food grain production despite the often unfavorable weather conditions. These include better flood control and irrigation, a generally more efficient use of fertilisers, as well as the establishment of better distribution and rural credit networks.
Upland rice is a type of rice grown on dry soil rather than flooded rice paddies. It is sometimes also called dry rice.
The International Crop Information System (ICIS) was an open-source database system led by researchers from the International Rice Research Institute (IRRI) that provided integrated management of global information on crop improvement and management both for individual crops and for farming systems.
Perennial rice are varieties of long-lived rice that are capable of regrowing season after season without reseeding; they are being developed by plant geneticists at several institutions. Although these varieties are genetically distinct and will be adapted for different climates and cropping systems, their lifespan is so different from other kinds of rice that they are collectively called perennial rice. Perennial rice—like many other perennial plants—can spread by horizontal stems below or just above the surface of the soil but they also reproduce sexually by producing flowers, pollen and seeds. As with any other grain crop, it is the seeds that are harvested and eaten by humans.
Norman Uphoff is an American social scientist now involved with agroecology serving as a Professor of Government and International Agriculture at Cornell University. He is the acting director of the Cornell Institute for Public Affairs and former director of the Cornell International Institute for Food, Agriculture, and Development (CIIFAD) 1990–2005.
The Irrigated Rice Research Consortium (IRRC) focuses on agricultural research and extension in irrigated rice-based ecosystems. In partnership with national agricultural research and extension systems (NARES) and the private sector, the IRRC provides a platform for the dissemination and adoption of natural resource management (NRM) technologies in Asian countries. The IRRC is currently active in 11 countries: Bangladesh, Cambodia, China, India, Indonesia, Laos, Myanmar, the Philippines, Sri Lanka, Thailand, and Vietnam. It aims to strengthen NARES-driven interdisciplinary research, link research and extension, facilitate rice farmers' uptake of technological innovations, and enable environmentally sound rice production to expand to feed growing populations.
Ebrahimali Abubacker Siddiq is an Indian agricultural scientist, whose research in genetics and plant breeding is reported to have assisted in the development of various high-yielding rice varieties such as dwarf basmati and hybrid rice. The government of India honoured Siddiq in 2011 with the fourth-highest civilian award of Padma Shri.
The effects of climate change on agriculture can result in lower crop yields and nutritional quality due to drought, heat waves and flooding as well as increases in pests and plant diseases. The effects are unevenly distributed across the world and are caused by changes in temperature, precipitation and atmospheric carbon dioxide levels due to global climate change. In 2019, millions were already suffering from food insecurity due to climate change. Further, the predicted decline in global crop production is 2% - 6% with each decade. In 2019 it was predicted that food prices would rise by 80% by 2050. This will likely lead to increased food insecurity, disproportionally affecting poorer communities. A 2021 study estimated that the severity of heatwave and drought impacts on crop production tripled over the last 50 years in Europe – from losses of 2.2% during 1964–1990 to losses of 7.3% in 1991–2015.
Mangina Venkateswara Rao was an Indian agricultural scientist, plant breeder, geneticist and the chairman of the Agri Biotech Foundation. He was a former Vice Chancellor of the Acharya N. G. Ranga Agricultural University and a former Deputy Director of the Indian Council of Agricultural Research (ICAR). Rao, a recipient of the Norman Borlaug Award, was awarded the fourth highest civilian award of the Padma Shri, by the Government of India, in 1999.
Sant Singh Virmani is a US-based Indian plant breeder, rice scientist and a former Principal Scientist at the International Rice Research Institute (IRRI). He served IRRI from 1979 to 2005 and retired from its service as the deputy head of the Plant Breeding, Genetics and Biochemistry Division.
IR8 is a high-yielding semi-dwarf rice variety developed by the International Rice Research Institute (IRRI) in the early 1960s. It was the work by Peter Jennings and Henry Beachell. In November 1966, IR8 was introduced in the Philippines and India. Promoters such as the IRRI and farmer benefactors of IR8 have called it 'miracle rice', and celebrate it for fighting famine. IR8 dramatically increased the yields of Asian rice from 1 or 2 ton per hectare to 4 or 5 tons per hectare. It played a significant part in the Green Revolution.
Agriculture contributes towards climate change through greenhouse gas emissions and by the conversion of non-agricultural land such as forests into agricultural land. In 2019 the IPCC reported that 13%-21% of anthropogenic greenhouse gasses came specifically from the Agriculture, Forestry, and Other Land Uses Sector (AFOLU). Emissions from agriculture of nitrous oxide, methane and carbon dioxide make up to half of the greenhouse-gases produced by the overall food industry, or 80% of agricultural emissions. Animal husbandry is a major source of greenhouse gas emissions.
