Fertilizers are chemical substances that are used to enrich soils with specific nutrient to help plants arise . The elements allow for by fertilizers are typically nitrogen , atomic number 15 and potassium , although other elements such as calcium and sulfur are also useable within sure commercial fertilizers . When applied to the soil , fertilizers crack down into these constituent components and are then absorbed through the root systems of plants as a sort of nourishment .

Urea

Urea is the most wide used satisfying nitrogen fertilizer and is normally go for as granule , although it is sometimes miscellaneous withammonium nitrateand dissolved in water to form urea ammonium ion nitrate solvent . When applied to land , urea reacts with urine to imprint ammonia , which nominate the nitrogen within the fertilizer available to plant . Urea fertilizers deliver one of the highest amounts of nitrogen at 46 percent , with no daystar or atomic number 19 .

Ammonium Nitrate

A solid fertilizer typically applied in coarse-grained manikin , ammonium nitrate provides solid amounts of atomic number 7 to the territory . The Fertilizer Institute indicates that ammonium ion nitrate is particularly effectual at fertilizing specialty crop such as citrus fruit and pasture acres . Ammonium nitrate typically provide 33 percent nitrogen .

Ammonium Sulfate

A by - merchandise derived from the wastefulness father by coke ovens , ammonium sulfate forms when sulfuric acid is used to remove ammonium hydroxide from the ember used to make coke . ammonium ion sulfate is a solid material that contains 21 pct nitrogen .

Calcium Nitrate

This fertilizer contains 16 percent N in a nitrate form . Less effective than other atomic number 7 fertiliser due to leaching when applied to soil , calcium nitrate is often used in fruit and vegetable craw to allow a readily usable source of nitrogen and also provides soluble calcium for soils that are Ca substandard .

Diammonium Phosphate

Where soils do not have enough P , diammonium phosphate can provide important amount of money of this chemical substance , at around 46 percent . The ammonia constituent of diammonium phosphate also delivers around 18 per centum nitrogen . Highly water soluble , diammonium orthophosphate is often applied in smooth form .

Monoammonium phosphate

Another Lucifer fertiliser , monoammonium phosphate delivers even more Lucifer than diammonium orthophosphate , at 48 percent . The amount of atomic number 7 in fertilizer provides is passably less at 11 percent . The lower stratum of the ammonia constituent of this chemical lessens the danger of damage when apply to new seedling growth .

Triple Super Phosphate

Available in granular form , triple super phosphate is utilize directly to the soil . While largely replace by diammonium phosphate and monoammonium phosphate due to good storage and the availableness of nitrogen within the chemicals , triple super phosphate is still in role both commercially and in domicile applications . Triple super orthophosphate is often combined with nitrogen - based plant food to provide a better , broad - spectrum program .

Potassium Nitrate

Potassium nitrate , also prognosticate nitrate of potash , is ofttimes used on vegetable crop include celery , potato , leafy dark-green vegetables , tomatoes and several yield harvest , concord to the Michigan State University Extension . The nitrate constituent of this chemical fertiliser works well with these crop . Potassium nitrate provide 44 per centum potassium .

Potassium Chloride

Sometimes predict muriate of potassium hydroxide , potassium chloride is a significant source of the component atomic number 19 as a fertiliser . Directly put on to soils or combined into multiple close of mixed fertiliser , atomic number 19 chloride is also highly soluble and can be apply in liquid fertilizers . The chemical typically provides 60 to 62 percent potassium .

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