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| Name | Understanding the NPK Ratio of Fertilizers (With Examples) |
| Video Uploader | Video From Study Force |
| Upload Date | This Video Uploaded At 11-03-2023 16:13:28 |
| Video Discription | ✔ https://StudyForce.com ✔ https://Biology-Forums.com ✔ Ask questions here: https://Biology-Forums.com/index.php?board=33.0 Follow us: ▶ Facebook: https://facebook.com/StudyForcePS/ ▶ Instagram: https://instagram.com/biologyforums/ ▶ Twitter: https://twitter.com/studyforceps Note: The NPK ratio is the fertilizer analysis that tells you information about three key nutrients: nitrogen, phosphorus, and potassium. It is usually written in large bold letters on the packaging. Q1. In package whose NPK ratio is 33-10-5, what percentage of the product contains nitrogen, P2O5, and K2O? If the package weighs 40 lbs, how much of each nutrient does it contain by weight. Note: If you're asked for the percentage of elemental P and K, the calculation changes. • Firstly, the molecular weight of P2O5 is 142 grams/mol. The portion of the molecule that is P only is 62 grams/mol. Therefore, P represents 62/142=0.4366 or 0.44 (44%) of the molecule. • Similarly, K2O has a molecular weight of 94 grams/mol. The portion of the molecule that is potassium is 78 grams/mol. Hence, potassium only represents 78/94=0.8298 or 0.83 (83%) of the molecule. Q2. a) For the 50 lb. bag of fertilizer depicted below, state the percent of: N = ___% P2O5 = ___% P = ___% K2O = ___% K = ___% Filler = ___% Total = ___% b) Calculate the weight of each nutrient in pounds (lb.): N = ___ lb. P2O5 = ___ lb. P = ___ lb. K2O = ___ lb. K = ___ lb. Filler = ___ lb. Total = ___ lb. |
| Category | Education |
| Tags | Fertilizer Analysis | Understanding the NPK Ratio of Fertilizers | Nitrogen | P2O5 | Phosphoric Acid | K2O | Potassium Oxide | Molecule weight | Base Percentage Rate Problem | Horticulture | Agriculture | Lawn Care Calculations |
