Sentences with phrase «nitrogen fertilizer such»

Not exact matches

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.

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.

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.

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.

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.

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.

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).

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 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.

Other studies have shown that coating nitrogen fertilizers with various materials, such as polyolefins, can slow the release of nitrogen nutrients so that they are more synchronous with the requirements of the growing crop.

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).

An agronomist with the company reported to us that their main interest in such fertilizers was for applications in developing and / or tropical countries, where present use of nitrogen fertilizers is, in many cases, relatively inefficient (e.g., rice production).

Other new techniques of applying nitrogen fertilizers, such as nesting the nitrogen fertilizer, may in future also become common, and their nitrous oxide emissions will need to be measured.

The opportunities for improvement are even greater in rapidly developing economies such as China, which now uses much more nitrogen and phosphorus fertilizer much less efficiently than either the United States or Europe, and at a much higher cost in pollution and human health.

Some regions may even shift from being a carbon sink to being an atmospheric carbon dioxide source, 50,51,52 though large uncertainties exist, such as whether projected disturbances to forests will be chronic or episodic.31 Midwest forests are more resilient to forest carbon losses than most western forests because of relatively high moisture availability, greater nitrogen deposition (which tends to act as a fertilizer), and lower wildfire risk.50, 51,53

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.

Such «green manures,» the authors found, provide the nitrogen needed for the next crop without having to use synthetic fertilizers.