Average
rice yield in the Philippines is also higher than of Thailand's, the world's biggest exporter of rice, where yields over the last few years have been around 3 tons per hectare.
From 1990 to 2004,
rice yield in these regions expanded annually at 3.5 %.
A recent report has shown that IRRI's rice breeding work has increased
rice yields in Vietnam and is delivering $ 610 million per year to the country and has increased farmers» returns by US$ 127 a hectare in southern Vietnam.
A recent report has shown that IRRI's rice breeding work has increased
rice yields in the Philippines and is delivering $ 204 million per year to the country and has increased farmers» returns by US$ 52 a hectare.
Water scarcity will affect most of Asia, and higher temperatures will lower
rice yields in some areas by shortening the growing season.
He estimates that increased
rice yields in India — the result of introducing new strains — are worth about $ 75 million a year.
Irrigated
rice yields in Africa are often comparable to yields obtained in Asia, but there is a need for improved, high - yielding varieties, resistant to major environmental stresses, pests and diseases.
«
Rice Yields in Tropical / Subtropical Asia Exhibit Large but Opposing Sensitivities to Minimum and Maximum Temperatures.»
An increase in carbon dioxide and a rise of, for example, one - half degree in the average temperature, will trigger a significant decline in
the rice yields in Southeast Asia and as much as a 25 percent drop in the wheat yields in India.
Rice yields in Japan, among the highest in Asia, are well below those in California.
Not exact matches
A research finding
in January 2017 reveal that Golden
Rice hybrid with Swarna variety resulted to phenotyphic abnormalities, stunted growth and low
yield, virtually adulterating the metabolic and genetic traits of the variety.
Lopez is referring to the study released by Test Biotech which states that the samples of Golden
Rice were found to have lower yields due to the «substantial reduction» of chlorophyll in the rice pla
Rice were found to have lower
yields due to the «substantial reduction» of chlorophyll
in the
rice pla
rice plants.
In 2014, IRRI has announced that it has pushed back the commercialization of Golden
Rice due to its very low
yield performance.
«From Masagana 99 and high -
yielding varieties
in the 1960s, to Masagana 6000 and Golden
Rice today, it seems nothing has changed,» said Antonio Flores, a farmer from Mindanao and secretary general of the Kilusang Magbubukid ng Pilipinas.
After the intense opposition from various farmers and consumers groups, including the uprooting of the clandestine field trial
in Camarines Sur, the International
Rice Research Institute (IRRI) postponed the commercialization, citing the failure of Golden
Rice to produce better
yields.
In recent study, scientists from India showed that the derived lines of Golden
Rice produced phenotypic abnormality and poor
yield performance making it unfit for commercial cultivation.
Moreover, as the Philippines was an early adopter of the first modern
rice varieties developed by IRRI
in the 1960s, it had already enjoyed major increases
in rice yields before 1985.
With the global population rising continuously, urbanization rapidly reducing land for farming, and climate change threatening stable crop production, a significant improvement
in genetic
yield potential is one of the most crucial goals
in rice research.
There had been no significant
yield improvement
in inbred
rice cultivars after the Green Revolution.
«With the successful introgression of a functional epigenetic allele into elite indica
rice genomes, we are redefining best practices
in applying genomics tools to increase the
yield potential of
rice.»
Further, even at the vegetative growth stage, heat stress can cause leaf yellowing and accelerated development, leading to low
yield potential
in sensitive
rice varieties.
We want to be sure that Golden
Rice grows just as well as the original, so farmers won't have to give up
yield, or pest resistance, or other attributes
in order to help those most
in need of a healthy and filling meal.
In 1985, Vietnam achieved self - sufficiency in rice and then went on to continue to increase its production due to supportive government policies, and its adoption of better crop management strategies and new high - yielding rice varietie
In 1985, Vietnam achieved self - sufficiency
in rice and then went on to continue to increase its production due to supportive government policies, and its adoption of better crop management strategies and new high - yielding rice varietie
in rice and then went on to continue to increase its production due to supportive government policies, and its adoption of better crop management strategies and new high -
yielding rice varieties.
Whenever susceptible
rice varieties are grown
in environments that favor bacterial blight, very high
yield losses, as much as over 70 %, may be caused by bacterial blight.
Dr. Kshirod K. Jena, a principal scientist at IRRI whose research has been on breaking the
yield barrier of
rice using genomics strategy, and his team discovered that the gene Gn1a - type 3 allele had not been very effective
in indica cultivars.
Today, hybrid
rice closes
yield gaps evident
in many areas.
However, since the 1970s,
rice yield potential had stagnated, particularly
in tropical indica
rice cultivars.
The astonishing
rice yield increases the country has achieved
in the last two decades are a tribute to a nation committed to undertaking
rice research matched to farmers» and consumers» needs.
We use new approaches for increasing
yield potential, such as marker - assisted breeding to develop the next generation of
rice varieties suited for irrigated environments
in Asia.
Featured were IRRI initiatives with heirloom
rice farmers
in the Cordilleras; conservation of
rice genetic diversity; and the decades - long field experiment which recently
yielded its 150th harvest.
Through IRRI and Vietnam partnerships, Vietnamese farmers are now able to maximize the full potential of the high -
yielding rice varieties being grown
in the Mekong and Red River Deltas.
It should be noted that IRRI's high -
yielding varieties and farming technologies have enabled increases
in production per land area for farmers and made
rice generally more affordable for consumers.
Although high -
yielding varieties are grown
in these areas, continual progress is necessary to incorporate disease and insect resistance and improved grain quality into
rice varieties.
In the region's lowland paddies, hybrid and high -
yielding inbred
rice varieties for the spring season, and inbred short - duration summer paddy varieties have been identified.
IRRI breeders had earlier observed traits related to higher
yield potential — such as large panicles, large leaves, a vigorous root system, and thick stems —
in several Indonesian tropical japonica
rice varieties.
Breeding to enhance
yield potential of
rice at IRRI: the ideotype approach Development and use of hybrid
rice technology to increase
rice productivity
in the tropics
«The use of the
Rice Crop Manager will hopefully bring an increase
in yield or productivity, and also raise the income of farmers by about Php 4,000 per crop per hectare,» said Dr. Manny Regalado, acting deputy director for research at the Department of Agriculture - Philippine
Rice Research Institute (DA - PhilRice).
Dr. Abdullah also noted that a number of Indonesian
rice varieties have been sent to IRRI to breed high -
yielding varieties, for example, one of the parents of «miracle
rice» — also called IR8 and renowned for its superior
yields that helped avert famine
in the 1960s — was an Indonesian
rice variety called Peta.
In this light, IRRI develops elite inbred
rice lines with higher
yield potential, multiple resistance to insects and diseases, and superior grain quality.
A 2011 report from the Australian Centre for International Agricultural Research found that between 1985 and 2009, IRRI varieties and breeding lines contributed, on average, 50 % of the annual
yield increases
in southern Vietnam and the use of new varieties increased Vietnamese
rice farmers» income by US$ 127 per hectare (
in 2009 values) per year during the study period.
IR8 and the subsequent high -
yielding rice varieties not only pulled Asia back from famine, but contributed immensely to the emergence of «tiger» economies among
rice - producing countries
in the region.
In 1960, IRRI was established with one pressing mission: to develop high -
yielding rice varieties.
The objective of this collaboration with ACI is to facilitate higher
rice yields, better quality, climate - change — tolerant varieties, and improved sustainability of
rice production
in Bangladesh.»
Rice yield subsequently rose to 4.3 tons per hectare
in 2012 from 1.7 tons per hectare
in 1970.
Research
in Jakenan, Central Java found three drought - tolerant potential
rice varieties from IRRI with high -
yield potential that are suitable for the second crop — IR68833, IR68836, and S3376e.
The continuous growth
in agriculture and
rice had been mainly possible because of scientific research and innovation, development of new rice varieties (high - yielding, short duration, stress - tolerant rice) and better farm management (with seeds from high - yielding varieties, irrigation, fertilizer, and pest management), which is supported by the country's Ministry of Agriculture, the Bangladesh Agricultural Research Institute, Bangladesh Agricultural Research Council, Bangladesh Rice Research Institute, IRRI - Bangladesh Office, and oth
rice had been mainly possible because of scientific research and innovation, development of new
rice varieties (high - yielding, short duration, stress - tolerant rice) and better farm management (with seeds from high - yielding varieties, irrigation, fertilizer, and pest management), which is supported by the country's Ministry of Agriculture, the Bangladesh Agricultural Research Institute, Bangladesh Agricultural Research Council, Bangladesh Rice Research Institute, IRRI - Bangladesh Office, and oth
rice varieties (high -
yielding, short duration, stress - tolerant
rice) and better farm management (with seeds from high - yielding varieties, irrigation, fertilizer, and pest management), which is supported by the country's Ministry of Agriculture, the Bangladesh Agricultural Research Institute, Bangladesh Agricultural Research Council, Bangladesh Rice Research Institute, IRRI - Bangladesh Office, and oth
rice) and better farm management (with seeds from high -
yielding varieties, irrigation, fertilizer, and pest management), which is supported by the country's Ministry of Agriculture, the Bangladesh Agricultural Research Institute, Bangladesh Agricultural Research Council, Bangladesh
Rice Research Institute, IRRI - Bangladesh Office, and oth
Rice Research Institute, IRRI - Bangladesh Office, and others.
Some example of these varieties are IR42, IR36, and IR8 which dramatically increased
rice's
yield potential, ushering
in an exciting new era
in Asian food security and rural development.
In 1967, the first widely distributed high -
yielding semidwarf
rice variety, IR8, was introduced into the country.
This success is largely a result of genetic improvement
in the form of high -
yielding, climate change - ready, and short - duration
rice varieties.
This agreement opens up more exciting collaborative activities
in developing higher -
yielding and more nutritious
rice varieties that also meet the eating preferences of consumers,» said Dr. Morell.