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  2. Labeling of fertilizer - Wikipedia

    en.wikipedia.org/wiki/Labeling_of_fertilizer

    Its K value is therefore 52/0.83 = 63; that is, a fertilizer that gets all its potassium from K 2 O and has the same potassium contents as pure KCl would have to be 63% K 2 O. Pure KCl fertilizer would thus be labeled 0-0-63. Since sylvite contains other compounds that contribute no N, P, or K, it is usually labeled 0-0-60.

  3. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    A 50-pound (23 kg) bag of fertilizer labeled 16-4-8 contains 8 lb (3.6 kg) of nitrogen (16% of the 50 pounds), an amount of phosphorus equivalent to that in 2 pounds of P 2 O 5 (4% of 50 pounds), and 4 pounds of K 2 O (8% of 50 pounds).

  4. Soil test - Wikipedia

    en.wikipedia.org/wiki/Soil_test

    Similarly, in 2004, laboratories began providing fertilizer recommendations along with the soil composition report. Lab tests are more accurate and often utilize very precise flow injection technology (or Near InfraRed (NIR) scanning [6] [7]). In addition, lab tests frequently include professional interpretation of results and recommendations.

  5. Indian Institute of Soil Science - Wikipedia

    en.wikipedia.org/wiki/Indian_Institute_of_Soil...

    Soil Test Based Fertilizer Recommendations for Targeted Yields of Crops. Indian Institute of Soil Science. C. L. Acharya, P. K. Ghosh, Indian Institute of Soil Science, A. Subba Rao (2001). Indigenous Nutrient Management Practices - Wisdom Alive in India. Indian Institute of Soil Science. {}: CS1 maint: multiple names: authors list

  6. Potassium cycle - Wikipedia

    en.wikipedia.org/wiki/Potassium_cycle

    The most abundant ion in plant cells is the potassium ion. [2] Plants take up potassium for plant growth and function. A portion of potassium uptake in plants can be attributed to weathering of primary minerals, but plants can also ‘pump’ potassium from deeper soil layers to increase levels of surface K. [2] Potassium stored in plant matter can be returned to the soil during decomposition ...

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