News tagged with fertilizer
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Fertilizer
Fertilizers are chemical compounds applied to promote plant and fruit growth. Fertilizers are usually applied either through the soil (for uptake by plant roots) or, by foliar feeding (for uptake through leaves).
Fertilizers can be placed into the categories of organic fertilizers (composed of decayed plant/animal matter), or inorganic fertilizers (composed of simple chemicals and minerals). Organic fertilizers are 'naturally' occurring compounds, such as peat, manufactured through natural processes (such as composting), or naturally occurring mineral deposits; inorganic fertilizers are manufactured through chemical processes (such as the Haber process), also using naturally occurring deposits, while chemically altering them (e.g. concentrated triple superphosphate).
Properly applied, organic fertilizers can improve the health and productivity of soil and plants, as they provide different essential nutrients to encourage plant growth. Organic nutrients increase the abundance of soil organisms by providing organic matter and micronutrients for organisms such as fungal mycorrhiza, which aid plants in absorbing nutrients. Chemical fertilizers may have long-term adverse impact on the organisms living in soil[citation needed] and a detrimental long term effect on soil productivity of the soil[citation needed].
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
UCSB researcher studies hormone levels and sexual motivation among young women
Feeling frisky? If so, chances are greater your estrogen level –– and, perhaps, fertility –– are hitting their monthly peak. If not, you're more likely experiencing a profusion of desire-deadening progesterone, and ...
Medical research
Apr 25, 2013 |
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As people live longer and reproduce less, natural selection keeps up
In many places around the world, people are living longer and are having fewer children. But that's not all. A study of people living in rural Gambia, published in the Cell Press journal Current Biology on Apr ...
Health
Apr 25, 2013 |
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How some cancers 'poison the soil' to block metastasis
Cancer spread or metastasis can strike unprecedented fear in the minds of cancer patients. The "seed and the soil" hypothesis proposed by Stephen Paget in 1889 is now widely accepted to explain how cancer cells (seeds) are ...
Cancer
Apr 30, 2013 |
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