Sentences with phrase «where nitrogen fertilizer»

In developing countries, where nitrogen fertilizer is scarce, insufficient plant nitrogen results in low crop yields and limited food supplies.

Not exact matches

He has been a director of CVR Partners LP (NYSE: UAN), a nitrogen fertilizer producer, since May 2014 where he is currently the Chairman of the Environmental, Health and Safety Committee and a member of the Audit Committee.

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.

The invention of synthetic fertilizer, where nitrogen is taken from an inert chemical form in the air and turned into ammonia, has had a profound effect on nitrogen cycling.

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.

Nitrogen is an important nutrient for crops and a key ingredient in fertilizer, but nitrogen often washes away into rivers and other bodies of water where it is detrimental to aquatic ecosystems.

Bowman intentionally made mistakes on one test plot — «areas where we didn't apply enough nitrogen fertilizer, where we simulated mistakes in the applicator, where we shut the boom off for a short period of time or plugged it up and ran for a while,» Bowman said.

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.

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.

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.

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.

And IPCC data suggest that N2O releases are far higher where nitrogen - fertilizer is applied to tropical soil compared to temperate soil — yet I am not aware of any full assessment of all emissions, including from soils, for any of the rapidly expanding tropical biofuel crops.

And excess nitrogen fertilizer applied to the fields of feed corn grown to satisfy the world's livestock runs off into streams and rivers, sometimes flowing to coastal waters where it creates large algal blooms and low - oxygen «dead zones» where fish can not survive.

For example, with nitrogen, where the majority of human emissions come from synthetic fertilizers, the real - world challenge is to apply just the right amount of nitrogen to optimize crop yields while minimizing nitrogen losses that harm aquatic ecosystems.

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.

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).

One possible application could be in zero tillage systems, where coated nitrogen fertilizer might allow considerably higher rates of fertilizer to be applied close to the seed.

Where Yellow Means Go As Townsend explains to his students, «The ability to make nitrogen fertilizer is one of the greatest boons in human history.»

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).

The combination of high prices of natural gas, which is used to make nitrogen fertilizer, and of phosphate, as reserves are depleted, suggests a much greater future emphasis on nutrient recycling — an area where small farmers producing for local markets have a distinct advantage over massive feeding operations.