GAYATHRI SUKUMAR, DIVYALAKSHMI D, MITHULA S, S.RUPACHANDRA, ANINDHITA MEENA M, and P.MUTHULAKSHMI, “Biostimulant activity of plant protein hydrolysate on the growth of Beta Vulgaris Subs. Vulgaris (linn.)”, ijpbs, vol. 8, no. 4, pp. 173–178, Dec. 2017.