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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 ?
Turner DA, Edis RE, Chen D, Freney JR, Denmead OT (2012) Ammonia volatilisation from nitrogen fertilizers in two cropping areas of southern Australia.
Interaction of nitrogen fertilizer rate and legume residue (Table 2) indicated that, nitrogen application at the rate of 60 kg N/ha on cowpea and soybean residue produced taller plants than the other rates used.
Use of 50% of needed nitrogen fertilizer which is 100kg nitrogen based on the soil test and biological fertilizer [BF.
The new unit will help increase ammonia manufacturing capacities 65%, so that the company will be able to boost nitrogen fertilizer output.
Peas also supply nitrogen to the soil and reduce the need for nitrogen fertilizer.
The trade-offs that nitrogen fertilizer use present to society have been documented in California for more than 50 years (Harding et al.
An agronomist at Oklahoma State University, Regents Professor Emeritus Charles Taliaferro, designed and conducted an experiment to determine biomass yield from alternative levels of nitrogen fertilizer for a single and double harvest per year system for four perennial grass species.
The widespread use of nitrogen fertilizer, less than one-half of which is typically absorbed by crops, is estimated to directly account for approximately one-third of agricultural GHG emissions -- before any consideration of emissions associated with the production and transportation of nitrogen fertilizer, which uses natural gas as a primary input.
The book begins with a review of the movement's origins in the 1920s lectures of a German mystic against synthetic nitrogen fertilizers.
Venterea and his colleagues compared the nitrous oxide emissions from three different tillage systems in combination with anhydrous ammonia, urea nitrogen fertilizer pellets, or liquid urea ammonium nitrate.
5 million tons of ammonia and 2 million tons of UAN each year--well above the 400,000 tons of ammonia and 700,000 tons of UAN that had been produced at Farmland's nitrogen fertilizer plant in Lawrence, vacant since 2001 and now available for sale as development property.
companies that produce nitrogen fertilizer reported adverse financial consequences resulting from much higher production costs.