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fertilizer definitions components classify.pptx
Fertilizers are any materials added to soil to supply plant nutrients. They are classified as straight, complex, or mixed. Straight fertilizers contain one primary nutrient like urea (nitrogen), while complex contain two or three like ammonium phosphate (nitrogen and phosphorus). Mixed fertilizers are physical mixtures of straight fertilizers containing two or three primary nutrients. Fertilizers can also be complete or incomplete depending on whether they contain all three major nutrients: nitrogen, phosphorus, and potassium.
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fertilizer definitions components classify.pptx
- 1. Fertilizer – Definition- Componentsand its classification
- 2. Soil fertility andsoil productivity “Soil fertility is the ability of the soil to supply essential plant nutrients during growth period of the plants, without toxic concentration of any nutrients”. “the capacity of the soil to supply nutrient in available form to crop”.
- 3. Soil fertility andsoil productivity “Soil productivity is the ability of the soil to produce a particular crop or sequence of crops under specified management system” All productive soils are fertile but all fertile soils need not be productive”
- 4. Fertilizer • Fertilizer isany material of natural or synthetic origin added to the soil to supply one or more plant nutrients • Usually fertilizers are inorganic in nature and most of them are products of different industries. (exceptions are urea and CaCN2 – organic fertilizers)
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- 6. Classification of Fertilizers Straight fertilizers •Supply only one primary plant nutrient (N, P & K) • Urea-N • SSP • MOP Complex fertilizers • Contains two or three primary plant nutrients • Diammonium phosphate (N,P) • Mono ammonium phosphate • Ammonium phosphate sulphate Mixed fertilizers • Physical mixtures of straight fertilizers • They contain two or three primary plant nutrients. • 19:19:19 of NPK
- 7. Fertilizer Complete fertilizer • Whichcontains all three major nutrients (N, P & K) Incomplete fertilizer • Which lacks any one of the three major nutrients Acid ,Base and Neutral fertilizers Fertilizer Grade • Refer to minimum guarantee of the available plant nutrients expressed as a percentage by weight in a fertilizer in terms of total N, P2O5 ,K2O (Complex / Mixed) 12:32:16 grade of NPK complex fertilizer
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- 11. Phosphatic fertilizers • Phosphoruspresent in the phosphatic fertilizer is usually expressed as phosphorus pentoxide (P2O5) • Phosphorus moves very slowly from the point of placement Water soluble Mono- calcium phosphate Citric acid soluble Di-calcium phosphate Citric acid (or) water insoluble Tri-calcium phosphate
- 12. Classification of phosphaticfertilizers Water soluble SingleSuper Phosphate-16-18%- Ca(H2PO4)2.H2O Doublesuper phosphate-32% 2Ca(H2PO4)2.H2O T ripleSuper Phosphate-46- 48% 3Ca(H2PO4)2.H2O Citricacid soluble Dicalcium phosphate- 40% CaHPO4 Basicslag- 13-18% (CaO)3P2O5SiO2 Citric acid insoluble Rock phosphate- 20-40% Bonemeal- 20-25% *Rhenania phosphate- 26-28%
- 13. Potassic fertilizers S.No Nameof fertilizers Composition K2O% 1 Fertilizers containing K in the chloride form Eg. Muriate of potash KCl 60 2 Fertilizers containing K in non chloride form Eg. Potassium sulphate/Sulphate of potash K2SO4 48-52 3 Potassium magnesium sulphate K2SO4, 2MgSO4 22 4 Potassium schoenite K2SO4, 2MgSO4.6H2O 22-24