DougC - Higher CO2 levels can increase yields. The yields for some crops, like wheat and soybeans, could increase by 30% or more under a doubling of CO2 concentrations.Indeed, it stands to reason, since plants "breathe" CO2 the more CO2 the better for plants. Also, global warming is likely to increase precipitation, but not everywhere. Changing weather patterns could increase drought in some regions. Present crops each have their optimal temperature range. For example, development of winter wheat was good for cold climates, but not so good for warm climates. Fortunately we already have a lot of experience with tropical agriculture. Yields are increasing dramatically in tropical countries and American farmers will have no problem obtaining and planting varieties that thrive in climates just a few degrees warmer than present. If Nigeria and India can figure out how to dramatically increase food production in the tropics I am sure American farmers will do just fine. https://en.wikipedia.org/wiki/File:Net_crop_production_tropical_countries_1961-2013.png
You make "changing weather patterns" sound so innocent. Have you thought about how those weather patterns are going to change? I'm thinking perhaps another informational thread may be in order.DougC - Higher CO2 levels can increase yields. The yields for some crops, like wheat and soybeans, could increase by 30% or more under a doubling of CO2 concentrations.Indeed, it stands to reason, since plants "breathe" CO2 the more CO2 the better for plants. Also, global warming is likely to increase precipitation, but not everywhere. Changing weather patterns could increase drought in some regions. Present crops each have their optimal temperature range. For example, development of winter wheat was good for cold climates, but not so good for warm climates. Fortunately we already have a lot of experience with tropical agriculture. Yields are increasing dramatically in tropical countries and American farmers will have no problem obtaining and planting varieties that thrive in climates just a few degrees warmer than present. If Nigeria and India can figure out how to dramatically increase food production in the tropics I am sure American farmers will do just fine. https://en.wikipedia.org/wiki/File:Net_crop_production_tropical_countries_1961-2013.png
CC what you don’t think there’s range, too much heat is every bit as destructive as too much coldNope, ice kills everything it smothers. I am not aware of any food crops that survive freezing temperatures while producing food. Fruit trees can live through the winter but they only produce in summer and an early frost can destroy the crop. There are no varieties of seed crops (wheat, corn, etc) or vegetables that can survive a blanket of snow or freezing cold. Plants, on the other hand, thrive in the jungles of equatorial South America, Africa, and Asia. Hot and steamy, plants love it. Tropical agriculture is up, up, up. https://en.wikipedia.org/wiki/Tropical_agriculture
Stop playing Romper Room! :long:
Are there rules about misquoting other members here, because I've posted consistently how doubling CO2 is going to cause agriculture to crash around the globe. That includes soy and wheat. So this is blatant denier distortion of even what members here are posting.DougC - Higher CO2 levels can increase yields. The yields for some crops, like wheat and soybeans, could increase by 30% or more under a doubling of CO2 concentrations.Indeed, it stands to reason, since plants "breathe" CO2 the more CO2 the better for plants. Also, global warming is likely to increase precipitation, but not everywhere. Changing weather patterns could increase drought in some regions. Present crops each have their optimal temperature range. For example, development of winter wheat was good for cold climates, but not so good for warm climates. Fortunately we already have a lot of experience with tropical agriculture. Yields are increasing dramatically in tropical countries and American farmers will have no problem obtaining and planting varieties that thrive in climates just a few degrees warmer than present. If Nigeria and India can figure out how to dramatically increase food production in the tropics I am sure American farmers will do just fine. https://en.wikipedia.org/wiki/File:Net_crop_production_tropical_countries_1961-2013.png
This is what’s going to happen to agriculture in a rapidly warming Earth.
The productivity of crop and livestock systems is extremely vulnerable to climate change. US crop yields could decrease by 30-46% over the next century under slow global warming scenarios, and by 63-82% under the most rapid global warming scenarios. Crop yields increase gradually between roughly 10-30 °C, but when temperature levels go over 30°C, soybean yields fall steeply. In a warming world, this spells problems for the agricultural industry globally.http://www.nature.com/nclimate/journal/v5/n2/abs/nclimate2470.html
Extrapolating the model ensemble temperature response indicates that warming is already slowing yield gains at a majority of wheat-growing locations. Global wheat production is estimated to fall by 6% for each °C of further temperature increase and become more variable over space and time.http://www.scientificamerican.com/article/climate-change-impacts-staple-crop-yields/
The people of the world get 75 percent of their sustenance—either directly, or indirectly as meat—from four crops: maize (corn), wheat, rice and soybeans. The world's rising population—now predicted by the United Nations to reach 10.1 billion by century's end—has been fed thanks to rising yields of all four of these crops during the past century. Humanity's predilection for burning fossil fuels, however, is now contributing to the slowing of such rising yields, cutting harvests of wheat 5.5 percent and maize 3.8 percent from what they could have been since 1980, according to a new analysis of yields. "On a global scale, we can see pretty clearly significant changes in the weather for most places where we grow crops," explains agricultural scientist David Lobell of Stanford University's Woods Institute for the Environment, who led the analysis published in the May 6 issue of Science. "Those changes are big enough to sum up to pretty big losses for wheat and corn."http://irri.org/news/hot-topics/rice-and-climate-change
The International Food Policy Research Institute (IFPRI) report Climate Change: Impact on Agriculture and Costs of Adaptation forecasts that by 2050 rice prices will increase between 32 and 37% as a result of climate change. They also show that yield losses in rice could be between 10 and 15%.
DougC - I’ve posted consistently how doubling CO2 is going to cause agriculture to crash around the globeYou told me to go here, undoubtedly to see how right you are and because you think these folks have something to teach us https://www3.epa.gov/climatechange/impacts/agriculture.html
Higher CO2 levels can increase yields. The yields for some crops, like wheat and soybeans, could increase by 30% or more under a doubling of CO2 concentrations.If you think their lead bullet point is 180 degrees out why did you send me trundling off to those fools?
http://www.worldbank.org/html/cgiar/press/biopress.html
Changing the nature of plants by adding or removing DNA – could improve food yields by up to 25 percent in the developing world.
Genes can be inserted into the major food crops, including rice, corn, wheat, potatoes, cassava and others to make them resistant to pests and diseases without the need for chemicals, or make them resistant to drought, cold, heat and other hostile conditions.
“It takes 10 kilograms of grain to produce one kilogram of beef, 15 liters of water to get one kilogram of beef, and those cows produce a lot of methane,” another potent greenhouse gas, Venter observed. “Why not get rid of the cows?” The replacement: meat grown in a test tube from microbes thanks to synthetic biology.
You go ahead and cherry pick, it's all climate change denial can do, I've already posted how that is the case when temperatures stay below 30 C which they almost certainly won't as the global average keeps climbing. Beyond that point yields in most major food crops start to drop as have already been observed. In the case of crucial food production areas like the Mekong and Yangtze river deltas, as the oceans continue to rise salt water intrusion of ground water which is already a serious issue will keep growing then at some point those areas will be under the ocean making further growth of rice there impossible. You're also the contrarian who has denied all the information on the collapsing infrastructure in the US despite voluminous evidence and here gone on endlessly that glaciers have no importance on climate and human interests...once again despite voluminous evidence to the contrary. Posting in the manner of a child with your fingers in your ears to deny reality while screaming that everybody must listen to you is infantile. As is an entire movement that is geared to meet the interests of a tiny percent of the population who have never advanced beyond the primitive stage of human development where the self is all. Most of us leave that behind when we stop being toddlers. CC said it well,DougC - I’ve posted consistently how doubling CO2 is going to cause agriculture to crash around the globeYou told me to go here, undoubtedly to see how right you are and because you think these folks have something to teach us https://www3.epa.gov/climatechange/impacts/agriculture.htmlHigher CO2 levels can increase yields. The yields for some crops, like wheat and soybeans, could increase by 30% or more under a doubling of CO2 concentrations.If you think their lead bullet point is 180 degrees out why did you send me trundling off to those fools?
Stop playing Romper Room!, this is a crucial issue, not something to be played with by people on the emotional level of toddlers.
You go ahead and cherry pick, it's all climate change denial can do ... dusty, why don't you ever continue reading?DougC - I’ve posted consistently how doubling CO2 is going to cause agriculture to crash around the globeYou told me to go here, undoubtedly to see how right you are and because you think these folks have something to teach us https://www3.epa.gov/climatechange/impacts/agriculture.htmlHigher CO2 levels can increase yields. The yields for some crops, like wheat and soybeans, could increase by 30% or more under a doubling of CO2 concentrations.If you think their lead bullet point is 180 degrees out why did you send me trundling off to those fools?
https://www3.epa.gov/climatechange/impacts/agriculture.html Higher CO2 levels can increase yields. The yields for some crops, like wheat and soybeans, could increase by 30% or more under a doubling of CO2 concentrations. The yields for other crops, such as corn, exhibit a much smaller response (less than 10% increase).[3] However, some factors may counteract these potential increases in yield. For example, if temperature exceeds a crop's optimal level or if sufficient water and nutrients are not available, yield increases may be reduced or reversed. More extreme temperature and precipitation can prevent crops from growing. Extreme events, especially floods and droughts, can harm crops and reduce yields. For example, in 2008, the Mississippi River flooded just before the harvest period for many crops, causing an estimated loss of $8 billion for farmers. [1] Dealing with drought could become a challenge in areas where summer temperatures are projected to increase and precipitation is projected to decrease. As water supplies are reduced, it may be more difficult to meet water demands. Many weeds, pests and fungi thrive under warmer temperatures, wetter climates, and increased CO2 levels. Currently, farmers spend more than $11 billion per year to fight weeds in the United States. [1] The ranges of weeds and pests are likely to expand northward. This would cause new problems for farmers' crops previously unexposed to these species. Moreover, increased use of pesticides and fungicides may negatively affect
Thanks CC…
You really should stop patting yourselves on the back until you have something of value. All you got is some EPA maybes. Give that same data from the USDA and then you will have something. You should be asking yourselves if the EPA is saying that farming is really going to get that bad. Why would the USDA who deal with the farming and are the experts on farming not be singing the same song? The USDA is who all the banks and governments listen to about farming, not the EPA.
You really should stop patting yourselves on the back until you have something of value. All you got is some EPA maybes. Give that same data from the USDA and then you will have something. You should be asking yourselves if the EPA is saying that farming is really going to get that bad. Why would the USDA who deal with the farming and are the experts on farming not be singing the same song? The USDA is who all the banks and governments listen to about farming, not the EPA.For starters the point is you lied about what the EPA webpage was saying, yes that was the lie of omission by cherry picking. Can you at least admit to that? That is that you were cherry picking to mislead weren't you big guy? Next in typical Whack-A-Mole fashion you run away from that and into the hands of the USDA. It took me all of a couple minutes with google to find out that the USDA is also quite concerned about the impacts of global warming driven climate change on farming. I wonder if you will pay any more attention to what they have to say?
http://www.agri-pulse.com/USDA-report-details-climate-change-threat-to-US-global-agriculture-12022015.asp USDA report details climate change threat to U.S. and global agriculture By Bill Tomson © Copyright Agri-Pulse Communications, Inc. WASHINGTON, Dec. 2, 2015 - The USDA today unveiled a new report warning that global warming will continue to cut agricultural production in the U.S. and around the world and reverse the recent trend of rising food security in some of the poorest countries. Longer droughts, higher temperatures and stronger storms over the coming decades will reduce agricultural production and raise the demand for U.S. food aid, according to the new report released by USDA as Agriculture Secretary Tom Vilsack attends the United Nations climate change talks in Paris. “Climatic stresses impact all of us and have real consequences on food production, dramatically affecting the yields of crops and threatening food security," Vilsack said in a statement. “All nations have a role to play in supporting agricultural growth and driving the innovation necessary to survive." Food insecurity worldwide has dropped by about 20 percent over the past 22 years, but global warming could erase those gains as farmers increasingly struggle with decreasing yields and consumers are faced with rising prices, according to the 146-page report, Climate Change, Global Food Security and the U.S. Food System. The effects of global warming have already reduced yields for world grain farmers by 2.5 percent since 2000, the report concluded, but stressed that the worst impacts are yet to come and will hit tropical countries first. But the United States is not immune. An Economic Research Service report released in November predicts that global warming will hit U.S. farmers hard … (http://www.ers.usda.gov/media/1951520/err201_summary.pdf) By 2020, yields will be falling significantly for corn, soybeans, rice, sorghum, cotton and oats, according to the researchers. Drought and dwindling ground water supplies will reduce corn and soybean production by about 8 percent and cut the sorghum harvest by about 15 percent. “We've seen increasing incursions of invasive pests and diseases and extreme weather, everything from bark beetle to severe droughts, which have cost billions in lost productivity," Vilsack said. “We've faced a series of record wildfire seasons in the western United States - the worst decade in U.S. history for wildfire. The growing El Nino weather pattern in the Pacific has created the perfect storm for disasters to strike the already damaged and weakened western landscape." And as conditions worsen overseas, it will become harder and harder to source …Why not take a look at that report? www.ers.usda. gov/publications/err- economic-research- report/err201 or there's this: http://www.usda.gov/oce/climate_change/effects.htm They seem to see it as a real and present danger, but you don't know that, do you? What do you know? Maybe you need to try a dose of that self-skepticism, but then that would require a degree of internal integrity I doubt your type possesses. Though I would so love to be proven wrong on that. But, you know looking at all the Republican's lining up behind Trump, seems further evidence of the "integrity" bankruptcy on that side of the fence these days. But, now we're getting into politics, so much messier than simply and honestly appraising Earth Sciences.
What you have are climate change scenarios at twenty year increments. But these scenarios are not included in their projection charts to go up to 2024 that the governments and banks use. In other words these are scenarios from computer models and are not give much weight at this time. When Wall Street takes action, then you can put some weight on the data. Follow the money.
How Was the Study Conducted?
This analysis draws on downscaled projections of temperature and precipitation under reference climate conditions as well as nine climate change scenarios for 2020, 2040, 2060, and 2080. Climate data, and the potential regional surface-water shortages associated with each climate projection, were calculated based on scenarios developed for the USDA Forest Service’s Resources Planning Act (RPA) assessment of renewable natural resources. Nine future climate projections were explored, which include three different General Circulation Models (GCMs) applied to each of three of the emissions scenarios in the Intergovernmental Panel on Climate Change Special Report on Emission Scenarios (SRES).
And your last site, USDA Releases Two New Reports on Climate Change
The reports below are a comprehensive syntheses of the scientific literature on climate change effects and adaptation strategies for U.S. agriculture and forests. Scientists from the Federal service, universities, non-governmental organizations, industry, tribal lands and the private sector contributed to the national stakeholder workshops and the peer-reviewed studies. The reports evaluate current conditions and look ahead to the next 25 to 100 years and the potential consequences of climate change.
These reports are nothing more that reports that didn’t even make the news. They were doing these same type of projections a few decades back when we were being told we were heading into another ice age.
syn·the·sis - combination or composition, in particular. The combination of ideas to form a theory or system.
Any department as big as USDA is going to have to produce some junk to be able to work with the other government departments. Don’t get taken in by the junk.
They were doing these same type of projections a few decades back when we were being told we were heading into another ice age.You keep repeating that lie even though we have corrected you several times. BTW, where the citation for the IPCC differentiating between Climate Change and Global warming?
DougC - collapsing infrastructure in the USHa Ha Ha. You give yourself away as a shrieking doomsday alarmist. I live in the USA. Our infrastructure is not even remotely collapsing. You are a credulous person easily manipulated by scare mongers. I pity you.
CC - if temperature exceeds a crop’s optimal level or if sufficient water and nutrients are not available, yield increases may be reduced or reversed.If temperature goes up a couple degrees plant a warmer weather variety. Tropical yields are up, up, up Cold weather plants don't like heat. Hot weather plants don't like cold. Duh. If water is not available plants don't do so well...wow, what an amazing revelation. Fortunately, increasing warmth leads to increasing evaporation which leads to increasing precipitation. But its gonna be all droughts all the time in your little shrieking doomsday 19th nervous breakdown universe.
Extreme events, especially floods and droughts, can harm cropsReally, gosh, what an amazing insight!!! Thank you ever so much for telling me that drowning plants is bad for plants. Never would have guessed...
Many weeds, pests and fungi thrive under warmer temperatures, wetter climatesYep, and guess what, we already knew that. Tropical yields are up anyhow. People figure things out. Try it some time, it might help you sleep better at night instead of wringing your hands and wailing all night like a paranoid little bitch.
They were doing these same type of projections a few decades back when we were being told we were heading into another ice age.You keep repeating that lie even though we have corrected you several times. BTW, where the citation for the IPCC differentiating between Climate Change and Global warming? "We", Ha, you have not corrected shit. All you are doing is trying to play a game by your rules. Guess what! I do not want to play your games. You only see what you want to see and only understand ideas that fit into your world. What ever makes you happy.
Where’s that citation? You were quite adamant about the IPCC differentiating between Climate Change and Global warming, yet you still cannot provide a citation backing up your claim. MY rules, as you call, them are evidence based. Your rules include making up things, ignoring evidence that shows you are wrong, and lying. And you act superior in your lies and ignorance.
Where's that citation? You were quite adamant about the IPCC differentiating between Climate Change and Global warming, yet you still cannot provide a citation backing up your claim. MY rules, as you call, them are evidence based. Your rules include making up things, ignoring evidence that shows you are wrong, and lying. And you act superior in your lies and ignorance.It's all they have to cling onto. Providence help us, when the going gets tough. :down: