Sentences with phrase «nitrogen fertilizer as»

Farmers may have to apply nitrogen fertilizer as well.

Pea crops require very little nitrogen fertilizer as a result, which reduces energy cost and greenhouse emissions.

Not exact matches

Industry, which includes factories that make nitrogenous fertilizers, take nitrogen from the atmosphere and return it to the environment as nitrates.

Seedlings can be fertilized with fairly high levels of nitrogen to encourage strong vegetative growth, but after the plants have adjusted to the garden, fertilizers should not be applied unless the plants have low nitrogen symptoms, such as leaf yellowing and stunted growth.

In the summer, there is higher humidity beneath the nurse trees, and legumes such as mesquite fix nitrogen in the soil — a perfect fertilizer for the chiltepíns.

Developing and demonstrating practical methods of rebuilding natural soil fertility became J.I. Rodale's primary goal when World War II's sudden shortage of nitrogen fertilizer — as it was diverted to making munitions — exposed the natural nutrient poverty of the nation's soil.

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.

They have a low carbon footprint, as they pull nitrogen from the air to produce their own fertilizers.

I'm wondering what my next step should be... should I opt for something heavy in nitrogen such as fish emulsion, something midrange in nitrogen content, or continue with the existing fertilizer?

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

Synthetic fertilizer is available as a variety of commercial products, with different nitrogen - release times, whereas manure and pulse crops need to be broken down by microbial decomposition before nitrogen becomes available.

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.

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.

The water, which in the case of slaughterhouse waste is laden with nitrogen and amino acids, is stored to be sold as a potent liquid fertilizer (see «Garden Delights,» next page).

A small number of sewage plants are removing phosphorous and nitrogen, which can be sold as fertilizer.

Crops such as corn and soybeans flourish when nitrogen - containing fertilizer is applied to Midwestern fields, but many farmers routinely apply more fertilizer than their crops can take up.

Demand for phosphorus and nitrogen fertilizer is rising steadily as the world grows more crowded.

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

California's vast agricultural lands — particularly soils heavily treated with nitrogen fertilizers — are now responsible for as much as 51 percent of total NOx emissions across the state, researchers report January 31 in Science Advances.

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.

They bring with them precious sources of nutrients like nitrogen, which in turn effectively act as a fertilizer for the thousands of other species that call these reef environments home.

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.

In a recent study, engineering researchers at Waterloo found that small wetlands have a more significant role to play than larger ones in preventing excess nutrients like nitrogen and phosphorus from fertilizer from reaching waterbodies such as the Great Lakes.

As farmers spend billions of dollars spreading nitrogen on their fields this spring, researchers at the University of Missouri are working toward less reliance on the fertilizer.

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

«There's a lot of fertilizer nitrogen that has accumulated in agricultural soils over the last few decades which will continue to leak as nitrate towards groundwater,» Mayer says.

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.

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.

«By incorporating this, we're putting that silica back, which as we show can decrease inorganic arsenic in the grain but it also can provide other nutrients so maybe more phosphorous, more nitrogen as sort of an organic fertilizer without the need for more chemical fertilizer.

But overuse of certain types of nitrogen fertilizer is another cause, and this is what the researchers identify as the culprit in China.

Grizzlies also act as nutrient conveyor belts, dispersing the nitrogen - and phosphorus - rich salmon carcasses across the forest floor like fertilizer.

But yields from a grass that only needs to be planted once would deliver an average of 13.1 megajoules of energy as ethanol for every megajoule of petroleum consumed — in the form of nitrogen fertilizers or diesel for tractors — growing them.

Farmland runoff containing fertilizers and livestock waste is the main source of the nitrogen and phosphorus nutrients that cause the annual Chesapeake Bay hypoxic region, which is also known as a dead zone.

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).

But the need to build massive chemical plants to convert methane and nitrogen into ammonia, as well as the massive infrastructure needed to distribute it, prevents many poor countries from easy access to fertilizer.

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

Resource - conserving cropping practices from WHEAT, such as more targeted use of nitrogen fertilizers or sowing wheat into untilled soils and crop residues, can raise wheat farmers» incomes while curbing greenhouse gas emissions, if widely adopted, he added.

Human - accelerated eutrophication (known as cultural eutrophication) can be triggered by inputs of sewage, sludge, fertilizers, or other wastes containing nutrients such as nitrogen and phosphorus.

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.

Farmers often use urea, a rich source of nitrogen, as fertilizer.

In the chemical toxin category, perchlorate (a naturally occurring chemical, but also a man - made contaminant stemming from production of nitrate fertilizer with certain types of ore serving as the nitrogen source) and tobacco smoke (which contains hydrogen cyanide that can be converted into thiocyanate) are well - researched examples of chemical toxins that are considered goitrogenic because they can interfere with thyroid function.

Our aquaculture system grows fish, provides high - nitrogen fertilizer, grows food year round, acts as a heat sink to balance greenhouse temperatures, and is where most of our rooting propagation occurs.

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.

One should also pay attention to other greenhouse gases, particularly methane (from rice paddies, ruminant animal digestive processes, industrial processes, and distributed natural sources, some of which could be triggered to large releases by warming) and nitrous oxide (from the nitrogen cycle linking the atmosphere, plants, and bacteria, now exacerbated by extremely heavy use of nitrogenous fertilizers in agriculture; note, as does Vaclav Smil from the University of Manitoba, that fertilizer use is required to feed half the world's current population.

As I said, the biomass types of interest are giant, perennial legumes — thus not needing nitrogen together with biologically based fertilizer that is derived from the co-product of MAF.

Since the soybean is a legume, fixing atmospheric nitrogen in the soil, it is not as fertilizer - responsive as, say, corn, which has a ravenous appetite for nitrogen.

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.