Organic Manure $P_2O_5$ Content Comparison
This solution identifies the concentrated organic manure with the highest percentage of phosphorus pentoxide ($P_2O_5$) from the options provided.
Manure $P_2O_5$ Content Table
| Organic Manure | Approximate % $P_2O_5$ |
| Neem cake | 1-2% |
| Raw bone-meal | 10-15% |
| Poultry manure | 1.5-3% |
| Fish manure | 3-5% |
Analysis of $P_2O_5$ Levels
Comparing the typical phosphorus pentoxide ($P_2O_5$) content in each manure:
- Raw bone-meal stands out with the highest $P_2O_5$ content, typically between 10% and 15%.
- Fish manure offers a moderate amount of $P_2O_5$, usually 3-5%.
- Poultry manure contains approximately 1.5-3% $P_2O_5$.
- Neem cake generally has the lowest $P_2O_5$ percentage, around 1-2%.
Conclusion
Based on the nutrient analysis, Raw bone-meal provides the highest percentage of $P_2O_5$ among the listed concentrated organic manures.
Important Questions from Manures and Fertilizers
Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide ?
With reference to polythylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements:
- Its fibres can be blended with wool and cotton fibres to reinforce their
- Containers made of it can be used to store any alcoholic
- Bottle made of it can be recycled into other
- Articles made of it can be easily disposed of by incineration without causing greenhouse gas
Which of the statements given above are correct?
Which of the following are nitrogen-fixing plants?
- Alfalfa
- Amarnath
- Chickpea
- Clover
- Purslane (Kulfa)
- Spinach
Select the correct answer using the code given below:
Consider the following:
1. Carbon monoxide
2. Nitrogen oxide
3. Ozone
4. Sulphur dioxide
Excess of which of the above in the environment is/are cause(s) of acid rain?
Urea is a________.
