I would like to ask the experts about the conversion of P2O5 in compound fertilizers
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Question 1: The nitrogen and phosphorus contents in fertilizers are expressed in terms of N:P2O5. So how is the phosphorus content in fertilizers converted into P2O5? Question 2: Is the total nutrient content in fertilizers calculated as N% + P2O5%? Question 3: Regarding the production of nitro compound fertilizers by freezing method, the issue of calcium removal rate comes into play. How does the level of calcium removal affect the nitrogen-phosphorus ratio of the product? First and foremost, I would like to express my gratitude in advance, earnestly asking the experts and masters to kindly share their insights. Thank you very much...
1. If 100g of fertilizer contains 31g of phosphorus, then P% = 31%. Given that the atomic weight of phosphorus is 31 and that of P2O5 is 142, and using the relationship P = 1/2 P2O5, the P2O5 content is 71%. 2. The nitrogen content in fertilizers can be determined using a Kjeldahl analyzer, while the P2O5 content is determined by the gravimetric method using molybdenum blue. The sum of these percentages gives the total nutrient content. 3. I haven’t worked with nitro compound fertilizers, so I’m not entirely sure. I’m not sure if my answer meets your requirements