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The second number ("P value") is the percentage by weight of phosphorus pentoxide P 2 O 5. The third number ("K value") is the equivalent content of potassium oxide K 2 O. [3] For example, a 15-13-20 fertilizer would contain 15% by weight of nitrogen, 13% by weight of P 2 O 5, 20% by weight of K 2 O, and 52% of some inert ingredient.
Some form of nitrogen fertilizer is needed if levels are below this range. On the other hand, if levels are above this range, addition of nitrogen fertilizer will not increase crop yield. In the corn belt, since about 1975, the predominant method of estimating the amount of nitrogen needed for corn has been the "yield-based" method. A farmer ...
Land equivalent ratio. The FAO defines land equivalent ratio (LER) as: [2]. the ratio of the area under sole cropping to the area under intercropping needed to give equal amounts of yield at the same management level.
10-10-10 fertilizer has equal parts nitrogen, phosphorus, and potassium. Learn about liquid and granular 10-10-10 fertilizer and when and how to use them.
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The research done to date uses either [clarification needed] ten and thirty measurements on test and well fertilized crops, to provide average values. Studies have been done for corn and wheat. One paper suggests that when the ratio drops below 95%, it is time to fertigate. The amounts of fertilizer are also recommended. [27] [28]
[citation needed] Inadequate amounts of boron affect many agricultural crops, legume forage crops most strongly. [citation needed] Boron deficiencies can be detected by analysis of plant material to apply a correction before the obvious symptoms appear, after which it is too late to prevent crop loss. Strawberries deficient in boron will ...
The Fertilizer Bin can be placed for free when you log into your farm, and from there, you'll need to collect building materials to finish it off. You'll need 10 Green Paint, 10 Grass Clippings ...
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