For example, Western Europe's three leading wheat producers — France, Germany, and the United Kingdom — have not
increased wheat yields for over a decade.
«Enzymes with potential to
increase wheat yields.»
MEXICO CITY, Mexico (February 2, 2017)-- Reductions of spike - ethylene, a plant - aging hormone, could
increase wheat yields by 10 to 15 percent in warm locations, according to a recent study published in New Phytologist journal.
Europe: Warmer temperatures will
increase wheat yields by up to 25 per cent in the north but water availability will drop in the south by up to a quarter.
Not exact matches
Then there was exciting news from India's poorest state, Bihar (pop 100 million, and 50 % of families in poverty), where the application of what's called the System of Rice / Root Intensification (SRI) has «dramatically
increased yields with
wheat, potatoes, sugar cane, yams, tomatoes, garlic, aubergine and many other crops», according to the Guardian newspaper.
For example, mixtures of «heritage»
wheat varieties grown together can lead to
increased yields, better resilience and enhanced soils.
Rising temperatures will slash
yields for rice,
wheat and corn throughout the developing world, exacerbating food price volatility and
increasing the number of undernourished people, the report warns.
Yields of this staple grain have
increased exponentially since the 1950s because better farming practices and new
wheat breeds have more than made up for those hot Julys.
The researchers predict that crop
yields for
wheat, soybean, and sorghum should
increase even more if mitigation measures are put in place.
In fact, genes first identified in Arabidopsis have already offered lessons on how to ripen tomatoes, protect
wheat from disease and
increase rape seed oil (canola)
yields, among other things.
Wheat yields could be significantly
increased thanks to varieties with a superior form of a common enzyme, according to new research.
Over the period under review, the
yield of the breeds of winter
wheat and spring barley appearing in the market for the first time
increased by around one per cent per year.
With the world population estimated to grow to 9 billion by 2050 and Earth's resources under severe strain predicted
wheat yields are not expected to meet the
increased demand for food.
Instead, it shows the predicted change in Kansas
wheat yields if we were to experience a 1 degree (C)
increase (1.8 degrees F) in temperature.
So far, genetic improvement has allowed
wheat yields to
increase significantly over time, but there are challenges ahead to keep up with potential
increases in temperature.»
Their results showed that from 1985 through 2011,
wheat breeding programs boosted average
wheat yields by 13 bushels per acre, or 0.51 bushel each year, for a total
increase of 26 percent.
Based on these test results, scientists subsequently applied the multi-model ensemble to estimate
wheat yields under
increasing temperature in the main cultivation areas of the world.
«Although
wheat yields in the UK and World
increased dramatically in the latter half of the twentieth century,
increases this century have proved elusive.
This is a serious problem as the predicted
increase in frequency of extreme climate episodes will lead to multiple drought conditions during crop growth which in turn will reduce the
yield of
wheat, one of the world's most important foods.
In addition,
wheat yield declines due to climate change are likely to be larger than previously thought and should be expected earlier, starting even with small
increases in temperature,» points out Prof. Dr. Reimund Rötter from Natural Resources Institute Finland.
Pearce strongly criticises the «green revolution», which has dramatically
increased yields in some parts of the world through planting of high - input, dwarf varieties of
wheat and rice.
The research opens up a whole new area of exploration for scientists as they try to
increase the
yields of
wheat and decrease losses due to excessively humid conditions.
Funded by the Bill & Melinda Gates Foundation and the UK's Department for International Development (DFID) under UK aid, the DGGW project aims to strengthen the delivery pipeline for new, disease resistant, climate - resilient
wheat varieties and to
increase the
yields of smallholder
wheat farmers.
Over 90,000 farming households in China achieved a substantial
increase in
yield of
wheat and maize over a five - year period (2009 - 2014) in which scientists lived and worked in their villages, engaging them and sharing knowledge.
Researchers have also found evidence supporting the claim that spelt may be easier for humans to digest than
wheat.4 Modern
wheat has been altered over the years through breeding to simplify its growth and harvesting,
increase its
yield and raise its gluten content for the production of commercial baked goods — all of which has rendered modern
wheat more difficult to digest.
That said, there are some interesting issues with
wheat such as the industries use of spraying pesticides days before harvest to
increase yield and of course processed
wheat is very calorie dense.
Genetic modification and selective breeding to
increase crop
yields over the years has dramatically changed the genetics and chemical composition of
wheat.
Such calculations
yielded the following
increases in fecal weight: 5.4 g of stool / g of
wheat - bran fiber, 4.9 g / g of fruits and vegetables, 3 g / g of isolated cellulose, and 1.3 g / g of isolated pectin (Cummings, 1993).
Without adaptation, local temperature
increases of 1 °C or more above pre-industrial levels are projected to negatively impact
yields for the major crops (
wheat, rice, and maize) in tropical and temperate regions, although individual locations may benefit (medium confidence).
Check out the CO2 fertilisation effect, which is already far greater than any climate change effect on agriculture: 15 - 40 %
increases in
wheat yields are likely from CO2 doubling.
, lightning related insurance claims, Lyme disease, Malaria, malnutrition, Maple syrup shortage, marine diseases, marine food chain decimated, Meaching (end of the world), megacryometeors, Melanoma, methane burps, melting permafrost, migration, microbes to decompose soil carbon more rapidly, more bad air days, more research needed, mountains break up, mudslides, next ice age, Nile delta damaged, no effect in India, nuclear plants bloom, ocean acidification, outdoor hockey threatened, oyster diseases, ozone loss, ozone repair slowed, ozone rise, pests
increase, plankton blooms, plankton loss, plant viruses, polar tours scrapped, psychosocial disturbances, railroad tracks deformed, rainfall
increase, rainfall reduction, refugees, release of ancient frozen viruses, resorts disappear, rift on Capitol Hill, rivers raised, rivers dry up, rockfalls, rocky peaks crack apart, Ross river disease, salinity reduction, Salmonella, sea level rise, sex change, ski resorts threatened, smog, snowfall
increase, snowfall reduction, societal collapse, songbirds change eating habits, sour grapes, spiders invade Scotland, squid population explosion, spectacular orchids, tectonic plate movement, ticks move northward (Sweden), tides rise, tree beetle attacks, tree foliage
increase (UK), tree growth slowed, trees less colourful, trees more colourful, tropics expansion, tsunamis, Venice flooded, volcanic eruptions, walrus pups orphaned, wars over water, water bills double, water supply unreliability, water scarcity (20 % of
increase), weeds, West Nile fever, whales move north,
wheat yields crushed in Australia, white Christmas dream ends, wildfires, wine — harm to Australian industry, wine industry damage (California), wine industry disaster (US), wine — more English, wine — no more French, wind shift, winters in Britain colder, wolves eat more moose, wolves eat less, workers laid off, World bankruptcy, World in crisis, Yellow fever.
A study in Nature Climate Change concluded that a 1 degree C temperature
increase will cause
wheat yields to decrease by about five percent, and a French study found higher temperatures negatively affected corn crops.
Observational data, evidence from field experiments, and quantitative modeling are the evidence base of the negative effects of extreme weather events on crop
yield: early spring heat waves followed by normal frost events have been shown to decimate Midwest fruit crops; heat waves during flowering, pollination, and grain filling have been shown to significantly reduce corn and
wheat yields; more variable and intense spring rainfall has delayed spring planting in some years and can be expected to
increase erosion and runoff; and floods have led to crop losses.4, 5,6,7
The impacts of
increased heat stress events on
wheat yield under climate change in China.
Relative rainfall reductions were amplified 1.5 — 1.7 times in dryland
wheat yields, but the impact was offset by steady
increases in cropping area and crop water use efficiency (perhaps partly due to CO2 fertilization).
Dr Dash told the Climate News Network: «Ten years ago, India's
yield of
wheat was
increasing.
The researchers, Dr John Duncan, Dr Jadu Dash and Professor Pete Atkinson, all geographers at the University of Southampton, say an intensification is predicted for the recent
increases in warmth in India's main
wheat belt that are damaging crop
yields.
Yields of some crops will
increase in some areas (e.g. cereal production in north and east Kazakhstan) and decrease in others (e.g.
wheat in the Indo - Gangetic Plain of South Asia).
Combined
yield increases of
wheat by 2050 could range from 37 % under the B2 scenario to 101 % under the A1 scenario (Ewert et al., 2005).
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.
It predicts
increases of 30 to 60 percent in the
yields of soybeans, cotton,
wheat and other crops — enough to provide food and clothing for earth's expanding human population.
Wheat, rice, and maize production in tropical and temperate regions are anticipated to vary widely in
yields, with severe
yield impacts significantly
increasing after 2050, depending on global temperatures.
The authors find that, without adaptation, projected corn, rice and
wheat production is reduced when areas experience 2.0 °C or more of local warming and that crop - level adaptations are projected to be able to
increase yields when compared to similar scenarios that do not utilize adaptation.
Projections indicate that adaptation may be more successful for
wheat and rice than for corn and that
yield variability is likely to
increase.
Whilst
wheat and maize show bigger «missed
yield increases» from rising temperatures, soya beans and rice show no effect yet on their
yields.
It predicts
increases of 30 to 60 percent in the
yields of soybeans, cotton,
wheat and other crops — ignoring projections to the contrary from plant and agricultural scientists
say it has been predicted that «the average temperature in the semiarid northwest portion of China in 2050 will be 2.2 °C higher than it was in 2002,» and they report that based on the observed results of their study, this
increase in temperature «will lead to a significant change in the growth stages and water use of winter
wheat,» such that «crop
yields at both high and low altitudes will likely
increase,» by 2.6 % at low altitudes and 6.0 % at high altitudes... Even without the benefits of the aerial fertilization effect and the anti-transpiration effect of the ongoing rise in the air's CO2 content, the
increase in temperature that is predicted by climate models for the year 2050, if it ever comes to pass, will likely lead to
increases in winter
wheat production in the northwestern part of China, not the decreases that climate alarmists routinely predict.»
-- > «The three Iranian researchers report that when the effects of elevated atmospheric CO2 were considered, all regions experienced an
increase in
wheat yield, which «ranged from 5 % to 38 % across all times, scenarios and regions.»
The government quickly adopted several key production - boosting measures, including a 40 percent rise in the grain support price paid to farmers, an
increase in agricultural credit, and heavy investment in developing higher -
yielding strains of
wheat, rice, and corn, their leading crops.
I am uncertain how to interpret the research about the effect of
increased nighttime temperature on
wheat yield.