Sentences with phrase «nitrogen fixed on»

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 %.

Not exact matches

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.

A hard look at experimental setups may start to explain dueling predictions on whether ocean acidification will boost, or choke, vital marine nitrogen fixers.

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

If life ever existed on Mars, it could have used the fixed nitrogen for building its own molecules, the researchers say.

«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.

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.

«This tiny fern houses within it secrets on how to sequester carbon, fix nitrogen and ultimately increase food production without sending the Earth to hell in a handbasket,» Pryer said.

Once the cells have changed from a normal cell to a nitrogen - fixing one there is no going back and they become totally dependent on the other cells for energy.

The Animal Core routinely provides liver samples to individual investigators either on ice, fixed in formalin for histology, frozen in optimal cutting temperature (OCT) compound for immunohistochemistry, flash frozen or freeze - clamped in liquid nitrogen for biochemical assays or stored in RNA later.

Exploiting habitats that are often or mostly out of water required new symbiotic relationships to contain and move water, including the fusion of some fungi and algae to create lichen in communities with bacteria that survive extreme desiccation on land while breaking down rock into soil, and the association of mycorrhizae fungi and the root tissue of new vascular plants — culminating in trees that pump water high into the air — to exchange mineral nutrients (e.g., phosphorus) and usable «fixed» nitrogen from the atmosphere for photosynthetic products.

Divers looking to nitrogen load can get their fix on deeper reefs and walls, but the majority of sites — including the wrecks — sit at accommodating middle depths that allow for longer bottom times.

On the surface, soy looks like an ideal candidate since it is a legume and thus should not require chemically fixed nitrogen.

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).