TREHAN, S.P. and SHARMA, R.C. (2013) “Phosphorus and zinc uptake efficiency of potato (Solanum tuberosum) in comparison to wheat (Triticum aestivum), maize (Zea mays) and sunflower (Helianthus annuus)”, The Indian Journal of Agricultural Sciences, 70(12). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/28754 (Accessed: 27 October 2025).