Search Results - "Kelowna"

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    Review on the innovations and challenges in developing rapid colorimetry and turbidity NPK soil test kits for commercial soil nutrient analysis

    Review on the innovations and challenges in developing rapid colorimetry and turbidity NPK soil test kits for commercial soil nutrient analysis by Teh, Christopher Boon Sung, Tan, Ngai Paing, Lok, Melissa Mei Teng, Tee, Yei Kheng

    Published 2024
    “…Examples include H3A-4 and Kelowna extractants using the zinc–Griess reagent, salicylic method, molybdenum yellow method, and sodium tetraphenyl boron method for nitrate, ammonium, phosphorus, and potassium, respectively. …”
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