Sentences with phrase «nitrogen fixed by»

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.

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.

Mosses in subarctic tundra are colonized by bacteria that fix atmospheric nitrogen (N2), and together, they can contribute 50 % to total ecosystem N input.

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.

And, for now, farmers have to laboriously supply it by applying fertilizer or planting legumes, which host nitrogen - fixing bacteria in their roots.

We further fix nitrogen by cultivating legumes and burning fossil fuels, timber and crops.

Black locust and autumn olive trees would fix nitrogen, allowing more goldenrods, sunflowers, and white snakeroot to move in along with apple trees, their seeds expelled by proliferating birds.

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.

Sanchez later led a project in Peru that dramatically increased rice yields and headed a center in Kenya that upgrades soil, and thus expands food production, by planting nitrogen - fixing trees in crop fields.

Grasses stood out as a strong group, unaffected by flooding whether grown alone or in mixtures, while legumes (important nitrogen - fixing plants) were severely affected.

Using this knowledge, Subramanian hopes to develop soybeans that are more efficient in making nodules and fixing nitrogen by manipulating the molecular mechanisms that regulate these functions.

Microbes can also generate nitrogen by taking carbon and using it fix atmospheric nitrogen into ammonia.

Nitrogen - fixing bacteria are the chief means by which nitrogen gas in the air is changed into a form that plants and animals can use.

Cultivars are differentiated by their ability to climb and their number of nods, which are capable to fix nitrogen, a peculiarity of all beans that is highly beneficial for the soil.

Lichens start breaking down the rock to form the first soil followed by plants like fireweed which fix nitrogen into the soil.

It can also affect the ratio of different species of trees by removing the competitive advantage of species that were better at fixing nitrogen.

In fact, a great deal of research over the last few years suggests the opposite, that usable precipitation and fixed nitrogen will actually become rarer, counteracting most if not all of the improvements in crop yields and overall carbon sequestration by plants worldwide.

About 91 % of farmers are practicing the technology at different levels depending on the component adopted out of the six, namely minimum land tillage; laying out fixed planting basins; no burning of crop residues; planting and input application in basins; and rotation with nitrogen - fixing crops for soil fertility restitution, outlined by the Conservation Farming Unit (CFU).

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 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 by more than 150 %.

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.

Chinese and US researchers report in Science journal that, according to their experiments, it became more difficult for a type of cyanobacteria called Trichodesmium to «fix» nitrogen in seawater that had been made more acid by carbon dioxide.

Modest increases in the export of organic matter, or decreases in ventilation by the circulation, could decrease oxygen below the critical threshold for fixed nitrogen loss.

Designed by Jerome Osentowski over 20 years ago, the garden at Central Rocky Mountain Permaculture Institute is a well - established 1 - acre polyculture garden that features an over-story of fruit trees, which shelter a mix of perennial and annual vegetables — many of which seed themselves, while others are planted traditional — as well as nitrogen fixing shrubs to maintain fertility.

«This year I am using favas as «green fertilizer» — they increase nitrogen content naturally by letting them grow — doing their brilliant N - fixing job all fall and winter, then I hoe them under before planting my beds in February.»