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Effect of split and foliar application of nitrogen on leaf nitrogen concentration, SPAD index and photosynthesis in Bt. Cotton (Gossypium hirsutum L.). SAARC J. Agri. [Internet]. 2017 Jan. 23 [cited 2026 Jul. 9];14(2):1-11. Available from: https://banglajol.info/index.php/SJA/article/view/31239