Table 5. List of commonly used fertilizers for culture of
catla and their N:P ratio, calcium and NPK content |
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Type of fertilizers |
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Chemical formula |
N:P ratio and Ca and NPK content (%) |
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N:P ratio |
Calcium |
Nitrogen |
Phosphorus |
Potassium |
Organic manures |
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Faeces/dung |
Cattle |
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3.75 |
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0.6 |
0.16 |
0.45 |
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Sheep |
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2.71 |
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0.95 |
0.35 |
1 |
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Pig |
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1.33 |
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0.6 |
0.45 |
0.5 |
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Poultry manure |
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1.5 |
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3 |
2 |
2 |
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Duck manure |
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0.71 |
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1 |
1.4 |
0.62 |
Meals |
Bone meal* |
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0.17 |
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3.5 |
21 |
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Deoiled cakes |
Mustard* |
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2.82 |
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4.65 |
1.65 |
1.56 |
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Groundnut*� |
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4.76 |
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7.29 |
1.53 |
1.33 |
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Mahua |
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3.14 |
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2.51 |
0.8 |
1.85 |
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Neem |
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4.83 |
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5.22 |
1.08 |
1.48 |
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Coconut* |
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1.59 |
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3.02 |
1.9 |
1.77 |
Aquatic plants and algae |
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Water hyacinth |
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5.51 |
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2.04 |
0.37 |
3.40 |
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Azolla sp. |
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18.4 |
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3.68 |
0.2 |
0.15 |
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Lemna sp. |
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16.55 |
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3.31 |
0.2 |
0.69 |
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Ceratophylum sp. |
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7.02 |
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3.3 |
0.47 |
5.90 |
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Hydrilla sp. |
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9.64 |
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2.7 |
0.28 |
2.90 |
Others |
Compost |
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1.33 |
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0.4 - 0.8 |
0.3 - 0.6 |
0.7 - 1.0 |
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Green manure |
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3.5 - 5.0 |
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0.5 - 0.7� |
0.1 - 0.2 |
0.4 - 0.8 |
Inorganic fertilizers |
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Calcareous |
Limestone |
CaCO3 |
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40 |
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Quicklime |
CaO |
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71.5 |
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Nitrogenous |
Ammonium sulphate |
(NH4)2SO4 |
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21.2 |
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Ammonium nitrate |
NH4NO3 |
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35 |
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Urea |
CO(NH2)2 |
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46.7 |
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Potassium |
Potassium chloride |
KCl |
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52.4 |
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Potassium sulphate |
K2SO4 |
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44.9 |
Phosphate |
Single super phosphate |
Ca(H2PO4)2+CaSO4 |
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7�8.7 |
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Triple super phosphate |
Ca(H2PO4)2 |
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19.2�23.6 |
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*Often used as
feed ingredients |
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Data source:
Jhingran (1991); CIFRI (1985b); www.fao.org/docrep/003/T0555E/T0555E |
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