Response of Garlic Plants (Allium sativum L.) to Foliar Application of Some Bio-Stimulants

Document Type : Original Article


 THIS STUDY was carried out in a clay loamy soil, at the Experimental Farm, Fac. of Agric., Tanta Univ., Egypt, during 2011/2012 and 2012/2013 seasons. The aim of this study was to evaluate the effect of some bio-stimulants, dry yeast (at three concentrations 2, 3 and 4 g.L-1) and chitosan (at three concentrations 2, 4, 6 ml.L-1) on growth, yield, quality and storability of “clone sids-40” garlic plants. Bio-stimulants were applied at 30, 45, 60 and 75 days from planting date. The experiment was designed in a completely randomized blocks (CRB) with three replicates. Foliar application of dry yeast (3 and 4 g.L-1) and chitosan (4 and 6 ml.L-1) effectively increased plant height, leaf number, leaves fresh weight, yield and its components in both seasons. Same treatments were positively affected N, P and K contents of leaves and bulbs, total carbohydrate and volatile oil of the bulbs in both seasons. Weight loss of the bulbs was the least with the application of chitosan (6 and 4 ml.L-1) in both seasons. In general, foliar application of dry yeast (3 and 4 g.L-1) and chitosan (4 and 6 ml.L-1) can be recommended to improve productivity, quality and storability of garlic plants grown in clay loamy soil.