Sentences with phrase «increased nitrogen fertilizer»

Not exact matches

This process increases nitrogen available in the soil without the need for added fertilizer.

When a nitrogen fertilizer is added to the soil, it increases its microbiological activity by activating both processes that at the same time they depend on factors such as such as climatic, edaphic and field management.

Global agricultural emissions of the gas have increased by 20 per cent in the last century as a result of widespread use of nitrogen - based synthetic fertilizers.

The finding that NOx emission rates will increase with warming temperatures also highlights the urgency of taking steps to better manage nitrogen fertilizer use in a warming world, he says.

The China Agricultural University researchers studied the increased nitrogen uptake in plants that received no nitrogen fertilizer to drive home their point that «all these changes can be linked to a common driving factor, strong economic growth.»

The amount of nitrous oxide in the atmosphere has quickly increased as well, with about a third of the total added by human activity — much of that emitted by nitrogen - based fertilizers, and half of that from just three nations: China, the Soviet Union, and the United States.

The increase in dead zones is attributed to excess inputs of nitrogen from fertilizers, sewage, and other human sources.

«The amount and diversity of pesticides, pharmaceuticals and other industrial chemicals that humans are releasing into the environment are increasing at rates that match or exceed recent increases in CO2 emissions, nutrient pollution from nitrogen fertilizers, and other drivers of global change,» Bernhardt said.

Since the 1980s, the use of nitrogen fertilizers and the number of livestock have doubled, whereas coal consumption has increased more than 3-fold and the number of motor vehicles more than 20-fold.

«This suite of tools will vastly improve our understanding of the nitrogen - uptake process and will help to develop increased crop yields and decrease fertilizer - caused pollution.»

This material has been tested as a fertilizer and has proven to stimulate the growth of several plant species, both forestry and herbaceous, increasing up to the 10 % its total content of nitrogen and carbon as well as an increase of its roots.

Hence, increasing nitrogen fixation could improve overall plant productivity for farmers who grow legumes in both industrial and developing countries while diminishing or eliminating the need for nitrogen fertilizers.

Beyond producing hydrogen and carbon - rich fuels in a sustainable way, he has demonstrated that equipping the system with a different metabolically altered bacterium can produce nitrogen - based fertilizer right in the soil, an approach that would increase crops yields in areas where conventional fertilizers are not readily available.

The need to address uncertainties applies to other areas the analysis as well, and we urge you to evaluate the increasing use of nitrogen fertilizers and herbicides associated with greater biofuel production.

By increasing the nitrogen content of the soil, cyanobacteria provide an important source of natural fertilizer.

By producing more food on less land, it may be possible to reduce these emissions, but this so - called intensification often involves increasing fertilizer use, which can lead to large emissions of nitrogen - containing gases that also contribute to global warming.

We are at a remarkable juncture where (i) the price of oil and nitrogen - based fertilizers is expected to increase, (ii) the long term availability of phosphorus for fertilizers is in doubt, (iii) the erosion of soil is reducing yields, and (iv) climate change brings extreme weather that impacts crop survival and productivity.

However, if one considers the enormous increase of reactive nitrogen in our biosphere, due to the use of synthesized fertilizer and the burning of fossil fuels, its impact is not part of the analysis, even tough this increase shows up in the eutrophication (nutrient enrichment) of open waters all over the world, resulting in excess algae, in some areas causing large algae blooms (as where they are going to hold the sailing regattas during the Olympics), red tides and dead zone, as the 8000 square mile dead zone in the Gulf of Mexico.

Perhaps instead of focusing on regulation and instead focusing on incenting positive behavior, we could get more digesters in place which would produce clean energy, reduce the amount of nitrogen and other nutrient pollution and provide farmers with another couple sources of revenue (electricity sales, fiber bedding sales (or savings) and increased fertilizer value of the liquid digestate as compared to raw manure.

In China, where fertilizer manufacturing is government - subsidized, the average grain yield per acre grew 98 percent between 1977 and 2005, while nitrogen fertilizer use increased a dramatic 271 percent, according to government statistics.

The claim that CO2 immediately increases plant growth and acts as a fertilizer is a highly oversimplified argument, since plant carbon uptake is dependent on water, temperature, and nitrogen suppy.

The paper didn't fail to mention what we have reported on before, that corn farming for ethanol using management practices such as commercial fertilizer application, mechanical tillage, and intensive drainage is the most important driver of this increase in nitrogen pollution.

There may also be opportunities for GHG offset projects, particularly in tropical and semi-tropical countries, where there is expected to be a large increase in demand for nitrogen fertilizers in the future.

In some experiments in Japan, polyolefin coated nitrogen fertilizers were found to improve the nitrogen fertilizer efficiency, reduce the total amount of fertilizer required, increase yields and profits, and reduce nitrous oxide emissions.At least one Canadian fertilizer company (Agrium) is experimenting with coated fertilizers.

These changes in land use would be expected to reduce carbon dioxide emissions from soils, and increase carbon sequestering by means of an increase in soil organic matter.However, this reduction in amount of land in summerfallow, and an increase in land in crop, has been accompanied by an increase in use of nitrogen fertilizers.

It has been suggested that the adoption of zero tillage in western Canada, with the potential to store more moisture and use moisture more efficiently, has been a contributing factor in the substantial drop in hectares of summerfallow, increases in land in crop, and increases in nitrogen fertilizer usage in western Canada in the last decade.

The use of nitrogen fertilizers in farming is increasing the rate at which nitrous oxide is being added to the atmosphere.

Furthermore, those yields will increase without the addition of soil N fertilizer, as the results of this study clearly show that it was a CO2 - induced stimulation of nitrogen - fixation by symbiotic bacteria that provided the nitrogen necessary to increase seed yields.»

I can tell you without a doubt, methane and CO2 will continue to increase, as long as the unrestrained global population continues to grow, as well as our demand for food and livestock, which continues to spread nitrogen fertilizers and pesticides into the soil and the water.

Skyrocketing fertilizer costs making up the bulk of recent increases in wheat production costs, and the cost of fertilizers is largely tied to the cost of natural gas (production of nitrogen - based fertilizers consumes a considerable amount of natural gas).

Trends in N2O emissions are region - dependent, with the largest increasing trend in temperate Asia owing to more nitrogen fertilizer usage there.

Soil analysis in 1990 suggested that nitrogen fertilizer application since 1967 had increased the organic carbon content in the surface soil layer by about 3 t / ha in a continuous wheat cropping system.

However, in fallow - wheat cropping systems (where response to nitrogen is much lower), the contribution of fertilizers to organic matter may be minimal, and the use of fertilizers in these unsound practices may result in a net increase in CO2 emissions (Janzen, 1992).

Smith says that the observed increase in nitrogen emissions from fertilizer is nearly double the value used in biofuel life - cycle assessments.

The upshot is that with rapidly increasing demand, plus increased components prices, we have a pricing perfect storm for nitrogen fertilizers.»

The current rate of increase is about 0.2 percent a year, primarily as the result of nitrogen - based fertilizers but also from burning of fossil fuels in cars and power plants.

«This year I am using favas as «green fertilizer» — they increase nitrogen content naturally by letting them grow — doing their brilliant N - fixing job all fall and winter, then I hoe them under before planting my beds in February.»

Adding leaves to compost effectively increases nitrogen content and creates a valuable natural fertilizer that can be used in the spring.

Another reason of the said greening in the Arctic is due to the increase of nitrogen in the atmosphere due to the human use of fertilizers and fossil fuels.