fertilizer types
DESCRIPTION
This document describes about types of fertilizersTRANSCRIPT
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Manures and Fertilizers
By- Vigyan ashram, Pabal.
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Types of FertilizersStraight. Mix.CompleteIncompleteOrganicInorganicSolubleInsoluble
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Straight Vs. Mix- Straight fertilizers contains single nutrient in
it as that of Urea contains only Nitrogen (N) @ 46 % OR Single Super Phosphate (SSP) contains only Phosphorus (P) @ 16 %.
Mix fertilizers contains 2 or more nutrients as that of Di-amonium Phosphate (DAP) contains 18 % Nitrogen (N) and 46 % Phosphorus (P).
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Complete vs. IncompleteComplete has all three primary nutrients-
nitrogen phosphorous & potassiumExamples: 10-10-10, 15-30-15, 20-5-20
Incomplete DOES NOT have all three primary nutrientsExamples: 20-0-0, 0-20-0, 12-0-44
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Organic FertilizersComes from plant or animal matter and
contains carbon compoundsExamples: urea, sludge and animal tankage
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Advantages of OrganicSlow release of nutrientsNot easily leached from the soilAdd organic components to growing media
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Disadvantages of OrganicHard to getNot sterileLow nutrient contentExpensive
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Inorganic FertilizersComes from sources other than animals or
plantsChemical products
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Advantages of InorganicCan make the desired ratio of nutrientseasy to getlower cost
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Disadvantages of InorganicNo organic material possible chemical building up in growing
media
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Soluble FertilizerDissolve in water and are applied as a liquid
solutionFertigation
fertilizing through irrigation waterbig advantage
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Insoluble FertilizerIncludes granular and slow release applied to
the growing media
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Granular vs. Slow ReleaseGranular
relatively inexpensiveeasy to find
Slow Releasemore expensive because it is coatedmore uniform release of nutrients over time
period
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Fertilizer AnalysisFertilizer analysis expresses weight as a
percent of nitrogen, phosphorus and potassium
20-10-20
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Fertilizer AnalysisFor Example
A 100 kg bag of fertilizer has an analysis of 15-5-15. How many pounds of nitrogen, phosphorus and potassium are in the bag? Nitrogen: 100 X 15%=15 Kg Phosphorus: 100 X 5%=15 Kg Potassium: 100 X 15%=15 Kg
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Fertilizer RatiosA fertilizer with a 10-10-10 analysis would
have a 1:1:1 ratioA fertilizer with a 24-8-16 analysis would
have a 3:1:2 ratioWhat would be the ratio for a fertilizer with
an analysis of 36-18-27?
4:2:3
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Thank you !