Sentences with phrase «nitrogen fixation»

For years, scientists have tried to increase the rate of nitrogen fixation in legumes by altering rhizobia bacterioid function or interactions that take place between the bacterioid and the root nodule cells.

There have been many claims of nitrogen fixation in plants outside nodules where it was known to occur for more than a century.

Also, the impact of biological nitrogen fixation on N2O emissions is important in assessing the impact of cropping system changes.

For more than a decade, a lone researcher has been building a case for nitrogen fixation by bacteria living in poplar leaves.

Assisted a Ph.D. of Agricultural Microbiology with collecting data on nitrogen fixation in corn and soybean plots.

They contain chemical evidence for nitrogen fixation by microbes.

They fed the new model almost 4 decades of data from 20 state agriculture departments and other sources on fertilizer use, animal waste, natural nitrogen fixation by crops, crops harvested, and atmospheric fallout from fossil - fuel combustion.

Some, however, plow through the night, converting nitrogen from the air into usable nutrients — a process known as nitrogen fixation.

The process is called nitrogen fixation, and it occurs in microorganisms on the roots of plants.

But he points out the vast majority of ocean nitrogen fixation is still unaccounted for — a problem «that needs to be fixed.»

Also enhanced nitrogen fixation stimulates plant growth.

«Direct nitrogen fixation for low cost energy conversion.»

Professor Jonathan Jones did his PhD at the Plant Breeding Institute in Cambridge, and then worked on symbiotic nitrogen fixation at Harvard.

The cyanobacteria tested in the laboratory tank are believed to be responsible for about half of all marine nitrogen fixation.

Along the way, the research team discovered a novel nitrogen fixation process.

The study was part of the Hawaii Ocean Time - series Program More about nitrogen fixation from the National Research Council

The biggest customer by a large margin, the colonial bacteria Trichodesmium, accounts for only one - tenth of known nitrogen fixation.

Pulse crops such as lentils are also environmentally sustainable in that they participate in nitrogen fixation through a symbiotic relationship with Rhizobium soil bacteria, which improves nutritional quality and yield of subsequent crops when used as a rotation crop (Migliozzi et al., 2015).

For example, by measuring nitrogen fixation by plants, scientists hope to help farmers optimise their crop rotations and manage the soil effectively.

«If you grow corn, you rotate the field with soybeans so you get nitrogen fixation,» Clarens said.

The most common method of industrial nitrogen fixation is the Harber - Bosch process, which requires extremely harsh conditions, 200 atm of pressure and 400 °C of temperature.

The researchers found that the organisms turned on three genes for an enzyme called nitrogenase, which aids nitrogen fixation.

Orly Levitan, an author of what may have been the first study of acidification boosting nitrogen fixation, says she would consider changing her seawater recipe based on the new paper if she were to revisit this work.

Ocean acidification slows nitrogen fixation and growth in the dominant diazotroph Trichodesmium under low - iron conditions.

The feat of introducing nitrogen fixation into corn and sorghum — or other genes that allow a crop to require less nitrogen — alone would cut costs and pollution markedly as well as drive higher yields.

Marilyn Roossinck of Pennsylvania State University, University Park, spoke with Sarah Crespi about the diversity of roles that viruses take on in ecological systems, from protecting plants from drought to moderating nitrogen fixation.

Heard started her plant science career by studying symbiotic nitrogen fixation during her Ph.D. work at Boston College.

The former President and CEO of the Boyce Thompson Institute and pioneer of nitrogen fixation research passed away August 2 at the age of 82.

Nanoscience has a role in understanding how those microbes talk to plants, how they share metabolites, and what regulates nitrogen fixation.

Iron and phosphorus co-limit nitrogen fixation in the eastern tropical North Atlantic.

Many gardeners, however, find it well worth the trouble to grow: just like all other legumes, astragalus has the ability to promote nitrogen fixation in the soil, thus enhancing its natural fertility.

Grain legumes provide an unparalleled solution to this problem because of their inherent capacity for symbiotic atmos - pheric nitrogen fixation, which provides economically sustainable advantages for farming.

It needs to be replaced with natural leguminous nitrogen fixation or the expanded population will find itself trying to live on one third of present agricultural productivity as oil production passes its peak.

Although nitrogen fixation is not just a gift of life — it has been estimated that 100m people were killed by explosives made with industrially fixed nitrogen in the 20th century's wars — its net effect has been to allow a huge growth in population.

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This process — called biological nitrogen fixation, or BNF — was found to substantially promote growth in certain grass crops, offering new strategies for eco-friendly farming.

Others may induce ecosystem functions such as nitrogen fixation.

The overall process is called nitrogen fixation.

Elevated CO2 enhances nitrogen fixation and growth in the marine cyanobacterium Trichodesmium.

They focus on modifications with nitrogen, developing a technique with direct nitrogen fixation, carbon - nitrogen bond formation, at the broken edges of graphite frameworks using ball - milling graphite in the presence of nitrogen gas.

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.

Recent projects have focused on understanding the controlling mechanisms for coccolithophore ecology, marine nitrogen fixation and the spread of anoxic conditions during Oceanic Anoxic Events of the Mesozoic.

Their analysis, which could discern human - derived nitrogen from natural nitrogen fixation, revealed that the oceanic nitrate concentration increased significantly over the last 30 years in surface waters of the North Pacific due largely to the enhanced deposition of nitrogen from the atmosphere.

This anthropogenic addition of nitrogen has reached a magnitude comparable to about half of global ocean nitrogen fixation (the natural process by which atmospheric nitrogen gas becomes a useful nutrient for organisms).

In my master's degree project, I investigated the effects of temperature on nitrogen fixation in soybean plants, and because Queen's offered a «mini-M.

The researchers think volcanic lightning or the heat of ancient impacts on Mars» surface were responsible for nitrogen fixation on the Red Planet.