News tagged with fertilizers
For highly educated women, families are an increasingly popular option
An increasing number of highly educated women are opting for families, according to a national study co-authored by a University at Buffalo economist.
Other Sciences / Social Sciences
May 15, 2012 |
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Legume lessons: Reducing fertilizer use through beneficial microbe reactions
Janine Sherrier, professor in the Department of Plant and Soil Sciences at the University of Delaware, is part of a team that has been awarded $6.8 million from the National Science Foundation (NSF) to study ...
May 10, 2012 |
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Men can rest easy -- sex chromosomes are here to stay
Fears that sex-linked chromosomes, such as the male Y chromosome, are doomed to extinction have been refuted in a new genetic study which examines the sex chromosomes of chickens.
May 08, 2012 |
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Insect glands may illuminate human fertilization process
Insect glands are responsible for producing a host of secretions that allow bees to sting and ants to lay down trails to and from their nests. New research from Carnegie scientists focuses on secretions from glands in the ...
May 03, 2012 |
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Plant diversity is key to maintaining productive vegetation
Vegetation, such as a patch of prairie or a forest stand, is more productive in the long run when more plant species are present, a new University of Minnesota study shows. The unprecedented long-term study of plant biodiversity ...
May 03, 2012 |
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Gene expression reveals how potatoes are cultivated
Organically grown potatoes have a higher gene expression of starch production than conventional ones. This statement is put forward by RIKILT, part of Wageningen UR, researcher Jeroen van Dijk, who can tell organically grown ...
May 03, 2012 |
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Spring nitrogen fertilizing for optimal wheat production
With longer and warmer days, wheat seeding and fertilizing has begun across the state. Using the right fertilizer source, rate, timing and placement is important for optimal production. Montana State University Extension ...
Apr 24, 2012 |
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Research shows that red is not a proxy signal for female genitalia in humans
New research from anthropologists at the University of Kent may have important ramifications for the future study of the role of colour signals in human social and sexual interactions.
Other Sciences / Social Sciences
Apr 19, 2012 |
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Meat eating led to earlier weaning, helped humans spread across globe
When early humans became carnivores, their higher-quality diet allowed mothers to wean babies earlier and have more children, with potentially profound effects on population dynamics and the course of human evolution, according ...
Apr 18, 2012 |
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Analysis raises atmospheric, ecologic and economic doubts about forest bioenergy
A large, global move to produce more energy from forest biomass may be possible and already is beginning in some places, but scientists say in a new analysis that such large-scale bioenergy production from ...
Apr 18, 2012 |
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NASA showcases method to grow algae-based biofuels
NASA recently showcased the latest research and technology development a method to grow algae, clean wastewater, capture carbon dioxide and ultimately produce feedstock for refining biofuels without competing ...
Apr 18, 2012 |
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Cyanobacterium demonstrates promise for biotechnology feedstock production
Harvard Medical School researchers have engineered a photosynthetic cyanobacterium to boost sugar production, as a first step towards potential commercial production of biofuels and other biotechnologically and industrially ...
Apr 17, 2012 |
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Drastic changes needed to curb N2O, most potent greenhouse gas: study
Meat consumption in the developed world needs to be cut by 50 per cent per person by 2050 if we are to meet the most aggressive strategy, set out by the Intergovernmental Panel on Climate Change (IPCC), to reduce one of the ...
Apr 12, 2012 |
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Strip-till improves soybean yield
Crop yield can be improved by ensuring adequate nutrient availability. But how should you place the fertilizer and what cropping system gives the best yields?
Apr 12, 2012 |
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Determining total fertility in strip-tilled fields
Band fertilizer placement may cause non-uniform distribution in the soil. Why does this matter?
Apr 12, 2012 |
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Fertilizer
Fertilizer (or fertiliser) is any organic or inorganic material of natural or synthetic origin (other than liming materials) that is added to a soil to supply one or more plant nutrients essential to the growth of plants. A recent assessment found that about 40 to 60% of crop yields are attributable to commercial fertilizer use.
Mined inorganic fertilizers have been used for many centuries, whereas chemically synthesized inorganic fertilizers were only widely developed during the industrial revolution. Increased understanding and use of fertilizers were important parts of the pre-industrial British Agricultural Revolution and the industrial Green Revolution of the 20th century.
Inorganic fertilizer use has also significantly supported global population growth — it has been estimated that almost half the people on the Earth are currently fed as a result of synthetic nitrogen fertilizer use.
Fertilizers typically provide, in varying proportions:
The macronutrients are consumed in larger quantities and are present in plant tissue in quantities from 0.15% to 6.0% on a dry matter (0% moisture) basis (DM). Micronutrients are consumed in smaller quantities and are present in plant tissue on the order of parts per million (ppm), ranging from 0.15 to 400 ppm DM, or less than 0.04% DM.
Only three other macronutrients are required by all plants: carbon, hydrogen, and oxygen. These nutrients are supplied by water and carbon dioxide.
The nitrogen-rich fertilizer ammonium nitrate is also used as an oxidizing agent in improvised explosive devices, sometimes called fertilizer bombs, leading to sale regulations[citation needed].
For more information about Fertilizer, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
