VERMA, CHANCHAL, et al. “EFFECT OF NITROGEN, BIO-FERTILIZER AND F TILIZER AND FARM YARD MANURE ON YIELD AND NUTRIENT UPTAKE IN OAT (AVENA SATIVA L.)”. The Bioscan, vol. 11, no. Supplement 2, Jan. 2016, pp. 499-02, https://thebioscan.com/index.php/pub/article/view/1224.