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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 ?
They are already cultivating a range of vegetables without using pesticide and chemical fertilizers on the vegetable fields.
TEHRAN (FNA)- A senior official with Iran's National Petrochemical Company (NPC) said the country is expected to produce record-breaking amounts of chemical fertilizers by March 2016.
Data regarding the biomass and paddy yield revealed that site specific integrated use of chemical fertilizer with MSWC in 80:20 ratio (T5) produced significantly higher biomass and paddy yield followed by integrated use of chemical fertilizers with MSWC in 80:20 ratio (T4).
Some farmers do not use chemical fertilizers due to high cost, the others - because of negative impact on quality of products.
The acidic and alkaline elements of the remaining chemical fertilizers react with soil and forms thick layers of rocks in the soil and leaves.
The Group has substantially devoted to chemical fertilizer trading business since the third quarter of 2014 and achieved substantial progress.
The vermicompost fertilizer made with 100 percent earthworms is unlike traditional chemical fertilizers that have been known to kill microorganisms contained in soil and release nitrogen particles causing groundwater contamination.
GPIC's delegation viewed QAFCO'S expansion projects: Qafco5 and Qafco6 implemented by the Qatari Chemical Fertilizers Company.
The chemical fertilizer industry (along with that of pesticides, which are based on poison gases developed for the war) is the product of the government's effort to convert its war machine to peacetime purposes.
The highest and lowest stem diameter was observed in treatments 4 (base chemical fertilizer + nitroxin foliar application at tillering stage) and 3 (base chemical fertilizer), respectively (Table 2).
Taliban militants are using chemical fertilizer besides other explosives in preparation of anti-tank mines.

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