) GLY ، YRRHIZA YLABRAL( بررسي اثر عمق كاشت و اندازه ريزوم بر رشد بالاي زميني گياه شيرين بيان

Evaluation of the effects of planting depth and Rhizome size on above ground growth of Liquorice (Glycyrrhiza glabra L.)

An experiment was carried out to evaluate the effects of planting depth and rhizome sizes on above ground growth of liquorice (Glycyrrhiza glabra L.) at research glasshouse of Mashhad University in 2001. Factorial experiment including planting depth (10, 20 and 40cm) and rhizome sizes (1,2 and 3 buds or 4,7 and 10g) with two replications in randomized complete block design was employed. By increasing the planting depth and rhizome size, leaf area and leaf dry weight were increased. By increasing the planting depth, stem dry weight was reduced but by increasing the rhizome size, stem dry weight was increased. The plants placed in 20 cm depth resulted the highest above ground weight which was a little greater than plants leaving in 40 cm depth.Three-bud rhizomes produced the highest above ground dry weight compared to other rhizome sizes. It is concluded that 3-bud rhizomes placed in 20 cm depth would favor liquorice growth.