Sentences with phrase «results on crop yields»

He makes the case that poor or even negative results on crop yields are often the result of over-application and / or the use of raw, rather than matured, biochar.

Not exact matches

«Higher temperatures and changes in precipitation result in pressure on yields from important crops in much of the world,» says IFPRI agricultural economist Gerald Nelson, an author of the report, «Climate Change, Agriculture, and Food Security: Impacts and Costs of Adaptation to 2050».

«Biological impacts on crop yields work through the economic system resulting in reduced production, higher crop and meat prices, and a reduction in cereal consumption.

DeLaune said previous field studies from the Rolling Plains and adjacent High Plains demonstrated mixed results, with some showing a reduction in soil moisture and cash crop yield due to cover crops and others indicating no significant impact of cover crops on subsequent fiber yield.

«The results clearly showed that modest amounts of climate change can have a big impact on yields of several crops in Europe,» said Stanford doctoral student Frances Moore, who conducted the research with David Lobell, an associate professor of environmental Earth system science.

These tools provide the means to sharpen assessment and management capacities required to: compare the result of several water allocations plans; improve soil - moisture control - practices under rainfed conditions; optimize irrigation scheduling; sustainably intensify crop production; close the yield and water - productivity gaps; quantify the impact of climate variability and change on cropping systems; enhance strategies for increased water productivity and water savings; minimize the negative impact on the environment caused by agriculture.

Output, generated on the monthly time scale, is disaggregated to daily values with a weather generator and used to drive soybean yields in the crop model DSSAT - CSM, for which preliminary results are discussed.

Based on measurements of ecosystem CO2 flux, radiation absorption by plants, crop yields and a model simulating the terrestrial biosphere, a multinational team of researchers has found that during July and August 2003, 500 million tonnes of carbon escaped from the forests and fields across Europe as a result of extreme heat and drought.

As far as crops go, the problem is this: Changes to the hydrological cycle as a result of global warming may be neutral on a 100 - year timescale, as far as crop yields are concerned.

Among the economic costs climate change is expected to enact on the United States over the next 25 years are: $ 35 million in annual property losses from hurricanes and other coastal storms, $ 12 billion a year as a result of heat wave - driven demand for electricity, and tens of billions of dollars from the corn and wheat industry due to a 14 percent drop in crop yields.

You are unable to demonstrate based on empirical data that these temperatures will be harmful — and there are some indications that a slightly warmer temperature (especially in the higher latitudes, where GH warming is supposed to oiccur) will increase arable land surface across N. America, and Eurasia, lengthen growing seasons and result in higher overall crop yields.

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 researchers, from the Tyndall Centre for Climate Change Research (University of East Anglia, Norwich), Grantham Research Institute on Climate Change and the Environment (London School of Economics and Political Science, London), and Global Environmental and Climate Change Centre (McGill University, Montreal), arrived at their results using the global crop model PEGASUS to simulate crop yield responses to 72 climate change scenarios spanning the 21st century.

KEY ACHIEVEMENTS • Formulated an organic pesticide, the use of which resulted in high organic content and crop yield • Saved 23 farm animals from an impending disease (discovered on the adjacent farmland) by quickly isolating and vaccinating them • Devised a novel irrigation system to provide water to all crop lines, without the use of sophisticated and expensive machinery • Suggested using the age old method of hand seeding, resulting in increased crop growth