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a fertilizing agent added to agricultural soils, in the form of an added chemical, or manure.


material added to soil to improve its fertility by adding to its chemical composition. Usually infers a chemical agent such as superphosphate but blood and bone and kelp humus are included also. Some of them, e.g. calcium cyanamide, ammonium sulfate, urea, can cause poisoning.

Patient discussion about fertilizer

Q. i just have my period last november 25 and ended on 28.when is my possible fertile and ovulation period please help me identify my fertile and ovulation period

A. If someone knew it, it'd solve the human race many problems with fertility. The problem is that ovulation (and thus, the period of possible fertility) happens 14 days BEFORE the onset of menses, so you know about it only retrospectively.

However there ways such as serial body temperature measuring, along with kits that measures the level of hormones in the urine in order to estimate the time of the coming ovulation, and help in timing intercourse.

You may read more about it here (www.mayoclinic.com/health/ovulation-signs/AN01521 ) but anyway, consulting a doctor (e.g. gynecologist) may be wise.

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References in periodicals archive ?
Artificial fertilizer usage seems to run into the American phenomena of "if a little of something is good, a whole lot has to be better.
Organic farmers and processors also have had an effect on conventional agriculture, showing ways to reduce reliance on costly pesticides and artificial fertilizers.
In 1999 the company decided to stop using chemicals and artificial fertilizers and focus exclusively on organic methods such as the use of pest insect repellants and animal manure.
Chemical reactions on catalytic surfaces play a vital role in many industrial operations such as the production of artificial fertilizers.
For crops, it means they were grown without the use of conventional pesticides, artificial fertilizers or sewage sludge, and that they were processed without ionizing radiation or food additives.
Written by lifelong gardeners Jeff Lowenfels and Wayne Lewis, Teaming With Microbes: A Gardener's guide to the Soil Food Web is a guide to using natural means to enrich the nutrients in soil and therefore the plants that grow in it, such as compost, mulches, and compost teas, rather than harshly toxic artificial fertilizers that destroy the very microbes that sustain healthy plants, therefore making plants increasingly dependent artificial nourishment.
have turned to soil bacteria and fungi rather than artificial fertilizers to boost harvests.
Biodynamic farming and gardening originated in 1924 when Rudolf Steiner presented a series of lectures to European farmers who asked him for advice and help after seeing the degradation of plants, seeds, and land caused by artificial fertilizers.
In Meng, a resident of Prey Veng province outside of Phnom Penh, stopped using pesticides and artificial fertilizers four years ago and says her family generated about US$147 the first year selling organic produce at the local market.
Now, with transport costs in many countries being held artificially low by government intervention, food sources can be much more dispersed and, by using artificial fertilizers, they can be on land which was previously unproductive (while of course increasing pollution).
He discovered that, because of the prohibitive cost of pesticides and artificial fertilizers overseas, a few growers had developed natural alternatives and were still producing perfect flowers.
Over use of garden chemicals and artificial fertilizers can discourage and destroy them so take care when considering the use of chemicals in your garden.