Sentences with phrase «nitrogen fertilizers used»

Nitrous oxide, meanwhile, is emitted from nitrogen fertilizers used in agriculture, among other sources.

On the other hand, nitrous oxide comes from nitrogen fertilizers used in agriculture.

Studies show that only about 30 percent of the nitrogen fertilizers used in agriculture are actually taken up by the crops they are intended to feed.

Rice also accounts for approximately 13 % of global nitrogen fertilizer use.

For this reason, it's important to figure out where — and by how much — farmers can afford to cut back on their nitrogen fertilizer use.

On a 40 - acre plot where he grows corn and soybeans in rotation, Ortner has worked with Michigan State University researchers for the past several years to reduce his nitrogen fertilizer use.

With the help of the Delta Institute and the Climate Trust, nonprofits focused on market - driven emissions reduction efforts, offsets are paid out to farmers when they document reductions in their nitrogen fertilizer use.

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.

However, the U.S. Environmental Protection Agency has increasingly recognized nitrogen fertilizer use as a significant source of NOx gases to the atmosphere.

Southern Asia contains some 90 % of the world's rice fields and more than 60 % of the world's nitrogen fertilizer use.

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.

They believed that applications in western Canada were less likely, given the relatively good efficiency of nitrogen fertilizer use in this region (by such techniques as banding).

The Delta Institute was presented with the Innovation award for the registration on ACR of the first U.S. fertilizer management project, a Michigan pilot currently in verification for reducing nitrogen fertilizer use on corn.

95 The case for crop - based biofuels was further undermined when a team led by Paul Crutzen, a Nobel Prize — winning chemist at the Max Planck Institute for Chemistry in Germany, concluded that emissions of nitrous oxide, a potent greenhouse gas, from the synthetic nitrogen fertilizer used to grow crops such as corn and rapeseed for biofuel production can negate any net reductions of CO2 emissions from replacing fossil fuels with biofuels, thus making biofuels a threat to climate stability.

Not exact matches

In 2010, one of its properties, Fern Road Farm, avoided using about 19,600 pounds of synthetic nitrogen fertilizers and 595 pounds of pesticides — while boosting revenue some 40 percent.

Farmers are earning huge profits on their wheat, soybeans, cotton and other crops; strong demand for (and relatively tight supplies of) grain, oilseeds and other key food inputs encouraged them to use large volumes of fertilizer (notably potash, phosphate and nitrogen) to boost their crop yields.

Chickpeas create their own fertilizer by fixing nitrogen from the air â $ «which means significantly lower use of chemical fertilizers and healthier soils.

At one point I heard them discuss how they could make a bomb using garden fertilizer for nitrogen, cellulose and battery acid.

Reduces greenhouse gases, especially nitrous oxide, as no chemical nitrogen fertilizers are used and nutrient losses are minimized

These variables include practices such as row spacing, type of tillage, use and type of cover crop, amount of compost and amount of nitrogen applied as fertilizer.

When serving «nitrate» vegetables, the levels of nitrates in Organics are reduced though not 100 percent eradicated (Nitrates are naturally occurring and farming without using nitrogen fertilizers does not eliminate nitrate concentration).

Emissions of nitrous oxide may be calculated if the nitrogen fertilizer or manure use during farming is known.

When serving «nitrate» vegetables, the levels of nitrates in Organics are significantly reduced though not 100 percent eradicated (Nitrates are naturally occurring and farming without using nitrogen fertilizers does not eliminate nitrate concentration).

Commercial baby food companies may buy veggies that are grown in a part of the country where the nitrate contamination of soil is lower, where the sun shines more or where Farmer's do not use high levels of nitrogen containing fertilizers.

You could argue [on] the climate change [one], but [on nutrient] pollution we have used so much [fertilizer] and so much nitrogen compounds are loose in the environment, it is hard to recognize our coastal oceans anymore; of the species that are gone [and] that kind of thing.

«We also wanted to look at how we could optimize the use of nitrogen, since nitrogen fertilizers can be a solution, but also a problem.»

Using different bacteria but the same overall setup, the researchers later turned nitrogen gas into ammonia for fertilizer, which could offer a more sustainable approach to the energy - guzzling method used for fertilizer production today.

Scientists have recently used the Canadian Light Source (CLS) to evaluate the effects of various sources of supplemental nitrogen fertilizer on the chemical composition of soil organic matter.

Encouraging these bugs to work harder is theoretically possible through the use of fertilizers, such as iron, nitrogen and phosphorus.

In a paper released for discussion in the journal Atmospheric Chemistry and Physics, Crutzen calculated that 3 to 5 percent of the nitrogen in the fertilizers used to raise crops for biofuels could end up in the atmosphere as nitrous oxide, a potent, long - lived greenhouse gas.

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.

And Cornell University researcher David Pimentel found that organic farms use 63 percent of the energy used by same - size conventional farms, which rely on large amounts of nitrogen fertilizer produced synthetically with large amounts of energy.

Normally, Ortner said, farmers use about 200 pounds of nitrogen fertilizer per acre, but now he's down to about 135 pounds per acre on the test plot.

If their efficiency could be transferred to crops, we could grow more food in less time using less water and less nitrogen fertilizer.

There's also interest in using metal catalysts to convert carbon dioxide into fuels, make fertilizers from atmospheric nitrogen and drive reactions in fuel - cell cars.

Biologically available nitrogen for agricultural fertilizer has been made since 1906 using the Haber - Bosch process.

At an agronomic level, the process also contributes leftover nitrogen - and phosphorus - rich digestate material that can be subsequently recovered and used as plant fertilizer.

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.

Small amounts of the silvery grey metal are used to speed up or «catalyze» a number of key industrial processes, including those that make drugs, detergents and nitrogen fertilizer, and they even play a major role breaking down toxic pollutants in the catalytic converters of our cars.

A portion of the carbon dioxide is captured and used to produce urea (CH4N2O), the most widely used nitrogen fertilizer worldwide.

Wang's research group designed a five - metal catalyst based on these high - entropy - alloy nanoparticles and demonstrated superior catalytic performance for selective oxidation of ammonia to nitrogen oxide, a reaction used by the chemical industry to produce nitric acid, an important chemical in the large - scale production of fertilizers and other products.

Tiny materials appear to disrupt the plant's ability to pull nitrogen from the air and use it as fertilizer

The nitrogen fertilizers traditionally used in agriculture have polluting effects both in water and in the atmosphere, this can degrade soils and contribute to global warming.

Water is a major concern, as is the use of nitrogen fertilizers to stimulate growth of cyanobacteria and microalgae — two microorganisms typically lumped together as algae biofuels.

Moreover, if the new rice supplies less carbon and other nutrients to the soil, farmers might eventually want to use more nitrogen - based fertilizers, resulting in the release of nitrous oxide, another strong greenhouse gas.

The bacteria harvest H2 from their PHB store and use their nitrogenase to combine it with nitrogen from the air to make ammonia, the starting material for fertilizer.

It turns out that there's such a double - win in most bathrooms around the world; if we had «NoMix» toilets that separate urine from solid waste, municipal wastewater plants would have a significantly easier task (and produce more methane to generate electricity), and we could much more easily extract precious nutrients like phosphorus and nitrogen for use as fertilizer (instead of using fossil fuels).

«The fertilizer you use in your garden has nitrogen and phosphorus in it,» he said.

The organic food movement eschews the use of artificial fertilizers, yet we can never forget a simple fact; nitrogen fertilizers were made possible by the Haber - Bosch process, a method literally of turning air into bread, which by some estimates kept a fifth of the world's population alive [4].

BRODIE: We typically use chemicals, especially nitrogen in the form of ammonia, as fertilizer.