We appreciate your visit to Which of the following choices shows a fertilizer mass a fertilizer grade and an area that when uniformly applied delivers approximately 1 0 lbs K. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
Final answer:
Based on the grade of the fertilizer and the area covered, option e, which implies applying 200 lbs of a 0-0-22 grade fertilizer over an acre, delivers approximately 1.0 lb K2O per 1000 ft2, matching the desired rate. Option (e) will be the correct one.
Explanation:
To determine the correct choice for delivering approximately 1.0 lbs K2O per 1000 ft2, we need to consider the mass of the fertilizer, its grade, and the area it covers. A fertilizer's grade is represented as a series of three numbers, which indicates the percentage of nitrogen (N), phosphate (P2O5), and potash (K2O) contained in the fertilizer.
Among the given options, the choice that would deliver approximately 1.0 lb K2O per 1000 ft2 should have enough of the product applied to the field so that when the percentage of K2O is taken into account, the total area covered receives the desired rate.
Let's analyze each option:
- Choice b: 167 lbs of 0-0-60 fertilizer contains 60% of K2O. One acre is 43,560 ft2. So, if we apply 167 lbs of this fertilizer over one acre, we get:
(167 lbs imes 60%) / 43.56 = 2.3 lbs K2O per 1000 ft2, which is more than the required 1.0 lb K2O per 1000 ft2. - Choice c: 200 lbs of 0-0-60 over one acre yields: (200 lbs imes 60%) / 43.56 = 2.75 lbs K2O per 1000 ft2, which also exceeds the desired rate.
- Choice d: 200 lbs of 0-0-50 over one acre yields: (200 lbs imes 50%) / 43.56 = 2.29 lbs K2O per 1000 ft2, again more than necessary.
- Choice e: 200 lbs of 0-0-22 over one acre yields: (200 lbs imes 22%) / 43.56 = 1.01 lbs K2O per 1000 ft2, which is the closest to the desired rate.
Therefore, based on the calculations, option e delivers approximately 1.0 lb K2O per 1000 ft2 when uniformly applied over an acre.
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