Comparative effectiveness of different levels of NPK and potassium humate on leaf mineral content of potato (Solanum tuberosum L.)

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Research Paper 01/12/2019
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Comparative effectiveness of different levels of NPK and potassium humate on leaf mineral content of potato (Solanum tuberosum L.)

Muhammad Idrees, Ashfaq Ahmad Rahi, Khurrum Shehzad Baig, Muhammad Akram
Int. J. Biosci.15( 6), 354-362, December 2019.
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Poor soil organic content is one of the major causes of low uptake of mineral nutrients in the plants. Besides optimum use of inorganic fertilizers, it is a need of time to introduce organic fertilizers in combination with mineral fertilizers. Humate substances are one of such beneficial substances that can improve the uptake of mineral nutrients in the plants. Therefore, a current field study was conducted to assess the improvement of mineral uptake in the potato leaves via application of different levels of NPK fertilizers i.e. 0, 50, 75 and 100% recommended dose and potassium humate (K-humate) i.e. 0, 8, 12 and 16 kg ha-1. It was observed that leaf mineral contents including N, P, K, Mg and Ca were positively affected by 100% recommended dose of NPK. In addition to above, application of 16 kg ha-1 K-humate also enhanced the uptake of N, P, K, Ca and Mg during the vegetative growth and their maximum concentrations were found at 85 days after planting. On the basis of results, it is concluded that K humate application is the necessity of time along with 100% recommended dose of NPK fertilizer for optimum uptake of nutrients in plants.


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