Impact of potassium nitrate (KNO3) and gibberellic acid (GA3) on germination and growth of aonla (Emblica officinalis L.)

Abstract

The present experiment entitled impact of potassium nitrate (KNO3) and gibberellic acid (GA3) on germination of Aonla (Emblica officinalis L.) was conducted at the Green House, Department of Horticulture, Allahabad Agricultural Institute - Deemed University, Allahabad, in 2007. Seeds were sown in polybags. Polybags were filled in with well-mixed soil, sand and farmyard manure. The experiment was conducted by adopting completely randomized design (CRD) with 13 treatments each replicated three times. Treatment T9 i.e. GA3 400 ppm, recorded the maximum germination percentage followed by T10 i.e. GA3 600 ppm while the minimum was with T0 (control). Tallest seedlings were recorded with treatment T2 i.e. KNO3 1.00% followed by T3 i.e. KNO3 2.00% and the shortest seedlings were recorded with To (control). Maximum number of leaves per seedling was recorded with treatment T9 i.e. GA3 400 ppm closely followed by T8 i.e. GA3 200 ppm, whereas, the minimum was with to (control). Maximum number of leaflets/leaf was recorded with treatment T9 i.e. GA3 400 ppm followed by T8 i.e. GA3 200 ppm, whereas, the minimum remained with To (control).