Sentences with phrase «of nitrogen fixed»

By adding industrial clout to the efforts of the microbes that used to do the job single - handed, humans have increased the annual amount of nitrogen fixed on land by more than 150 %.

These cyanobacteria may account for up to half of the nitrogen fixed in the ocean.

He cites three common ways for producers to introduce nitrogen into soil: synthetic fertilizer; manure or other organic amendments; and through cultivation of nitrogen fixing pulse crops.

Not exact matches

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

In another bold prediction, he envisions the start of GR3.0 sometime around 2030, when farmers start planting far more robust C4 and nitrogen - fixing rice varieties and consumers begin finding nutritious rice in the marketplace.

In order to maintain the nutrition of his soils and continually grow high - quality food, Gerard rotates numerous crops through his fields, including barley, oats, yellow mustard, food peas for splitting, French green lentils, and alfalfa for fixing nitrogen and providing organic matter to the soil.

Since organic farms are mostly mixed farms, integrating animal husbandry with crop production, using vast and diverse rotations, intercrops and green cover crops, and maintaining soil fertility by cultivating nitrogen fixing legumes, they display a higher diversity of domesticated species than conventional farms.

And they have a low water footprint, are nitrogen - fixing, and give all sorts of good stuff back to the soil in which they're grown, meaning they're good for the environment (pulses are basically the future of sustainable agriculture).

Pulse crops are in the legume family, Fabaceae, and consist of plants that fix (absorb) atmospheric nitrogen through roots in the soil, are high in protein, and bear seeds in pods.

Long before the rise of modern agriculture, humans relied on three things to bring nitrogen to barren soils: lightning strikes, nitrogen - fixing bacteria, and natural fertilizers.

As I began designing experiments to investigate the symbiotic relationship between legumes and nitrogen - fixing bacteria, my committee members applauded my ambition to pioneer a project far beyond the scope of my lab, which focuses on plant - pollinator interactions.

«This will eventually lead to a greater prevalence of blue - green algae called cyanobacteria which fix atmospheric nitrogen,» he added.

According to Gillespie, 40 per cent of people alive today derive their nitrogen nutrition from synthetically - fixed fertilizer.

MARS FERTILIZER The rover Curiosity has discovered «fixed» nitrogen, a biochemically important form of the element also found in fertilizer on Earth.

In samples of fine - grained deposits and drilled mudstone, the Mars rover Curiosity discovered «fixed» nitrogen — a chemical form in which the ultrastrong bond in nitrogen gas, or N2, has broken.

«It has been established that the nitrates, which is a form of nitrogen, comes from fixation of atmospheric diatomic nitrogen in the atmosphere during meteorite impacts, which is consistent with the data that we obtained through the SAM analyses, so this may be the main source of fixed nitrogen on Mars,» says Javier Martín - Torres.

Javier Martín - Torres, Professor of Atmospheric Science at Luleå University of Technology, is one of several researchers who has found fixed forms of nitrogen in Mars.

Three options are on the table: tweak cereals so that they form symbiotic partnerships with rhizobia as legumes do; colonise cereal roots with other types of nitrogen - fixing bacteria; or transfer the bacterial genes that make fertiliser directly into the crop plants.

And work on nitrogen could reveal which of two pathways is most important in removing biologically fixed nitrogen from oceans.

Nitrospinae bacteria, which use the nitrogen compound nitrite to «fix» inorganic carbon dioxide into sugars and other compounds for food and reproduction, are responsible for 15 to 45 percent of such carbon fixation in the western North Atlantic Ocean, researchers report in the...

Over time, the bacteria lost the ability to live independently of the fern, but their photosynthetic machinery increased its nitrogen - fixing capability by a factor of between 12 and 20.

A handful of biologists is working to endow major crops with the ability to «fix» nitrogen from the air into a biochemically usable form, a talent that is currently limited to certain microbes — and is essential to life.

Fixed nitrogen is a key ingredient in important biomolecules, including amino acids, the building blocks of proteins.

If you want, they will also sell you soil, biodiversity, nitrogen - fixing bacteria and all kinds of other things.

«One of the visions [of biotechnology] was making corn fix nitrogen,» Ursin says.

Most of these bacteria are symbiotic, drawing from and providing for the plant in ways such as nitrogen - fixing and leaf - protection.

«If we just control nitrogen, we'll merely shift the balance in favor of the species that can fix nitrogen, giving the same algal biomass.»

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

Desert soil has a living crust that is essential for fixing nitrogen, a critical plant nutrient, and for avoiding erosion that produces a swirl of itinerant dust.

However, salmon have a relatively high ratio of N - 15 to N - 14 compared with nitrogen - fixing sources such as alder trees.

Only a few bacteria and simple algae have the cellular equipment needed to «fix» the nitrogen of the atmosphere into ammonia.

The paper «Seasonal ITCZ migration dynamically controls the location of the (sub) tropical Atlantic biogeochemical divide» highlights how dust blowing off Africa's deserts amplify surface levels of iron in the Atlantic that in turn control the spatial activity of nitrogen gas fixing phytoplankton and phosphate content in the Tropical Atlantic.

«Ruthenium is often a highly active catalyst when fixed between arrays of four nitrogen atoms, yet it is one - tenth the cost of traditional platinum,» Tour said.

Indeed, marine surveys show that some unknown sea creatures fix large quantities of nitrogen.

Now, researchers of the Institute of Biochemical Plant Pathology (BIOP), in collaboration with staff of the former Institute of Soil Ecology (IBÖ), the Research Unit Experimental Environmental Simulation (EUS) and the Research Unit Analytical BioGeoChemistry (BGC) at Helmholtz Zentrum München have discovered the underlying mechanism that Arabidopsis thaliana plants use to draw NO directly from the air, which they subsequently fix into their nitrogen metabolism.

As a farmer I welcome the prospect of new varieties of wheat that can fix their own nitrogen from the...

Put all that together, and we fix around 121 million tonnes of nitrogen a year, far more than nature does — and nature can not cope.

Even though nitrogen gas makes up approximately 80 percent of Earth's atmosphere, the plant can only access it in a bound — or «fixed» — form.

They screened more than 30 genotypes of Setaria viridis grass, looking for a strong nitrogen fixing response when colonized with three different bacteria strains.

Subsequent literature searches led to the discovery that sugar cane, an agriculturally important crop, is a nitrogen fixer that contains bacterial endophytes, and Rout became curious if the microbes she and her colleague Tom Chrzanowski (The University of Texas Arlington) discovered in invasive Sorghum might be providing similar benefits to this invasive plant.

In fact, had scientists not created synthetic, mostly natural - gas - based fertilizer decades ago to improve nature's method of «fixing» nitrogen — a process of breaking nitrogen molecules apart to make them available to plants — neither you nor I, nor most of the 7 billion people crowding the planet, would be here today.

When nitrogen is low, about 1 in 10 of these bacteria, which grow in long filaments of cells, specialise in fixing nitrogen.

By isolating five bacterial strains of endophytes found inside S. halepense rhizomes (subterranean stems used for storage and vegetative reproduction) and growing them in the lab in different mixtures of substrates, the authors determined that these microbes were able to fix and mobilize nitrogen, phosphorus, and iron.

And the cycle of wet and dry phases fosters the growth of nitrogen - fixing cyanobacteria in the terraces, providing the plants with a naturally occurring source of usable nitrogen.

Even more intriguing is the discovery of a German research team from the 1980s, which discovered that some populations from southern Asia harbor a nitrogen - fixing bacterial species, which when described was new to science.

SEA CHANGE A rethink of earlier studies suggests trouble ahead for a major player in ocean nutrient cycles, the nitrogen - fixing Trichodesmium microbes, which can grow in abundance as seen is this image (pale streaks).

Genetic analysis of nitrogen - fixing enzymes have placed their origin at between 1.5 and 2.2 billion years ago.

«Fifty - four percent of that is fertilizer — the Haber - Bosch process; 11 percent is atmospheric deposition — the plus side of pollution; 18 percent is in situ fixation,» or nitrogen - fixing cover crops, like legumes, Sanchez said.

«Increasing nitrogen - fixing capacity of soybeans.»

Some bacteria do this within certain plant roots, but we'd like to look at nitrogen - fixing bacterial that live in other parts of many plants.