Influence of Different Soil Substrates, Planting Time and Stem Cuttings Type on Vegetative Propagation and Growth Characteristics of Vitex Agnus-Castus L. / Vplyv Rôznych Pôdnych Substrátov, Času Výsadby a Typov Stonkových Odrezkov na Vegetatívne Rozmnožovanie a Rastové Vlastnosti Vitex Agnus-Castus L.

Abstract

Abstract The study of vegetative propagation of the Vitex agnus-castus L., was conducted in the Agriculture College - Salahaddin University field under controlled condition (plastic greenhouse) in two periods (summer time: from 26.5.2008 to 2.9.2008 and winter time: from 15.1.2009 to 28.4.2009). The object of the studies were different soil substrates (sand and river (sharp) sand - sand and peat moss - sand and river (sharp) sand and peat moss). We used two types of stem cuttings (semi-hardwood cuttings „m“ - softwood cuttings „a“). The statistical analysis is based on the experimental project Complete Randomized Design (CRD) with three replications. The results were compared with results from Duncan test at 0.05 level. The study showed that planting in the second period (T2) causes increase in number of branches and leaves, whereas planting in the first period (T1) causes increase in number of roots and root length, the increase in the weight of biomass and dry mass has been observed in the second period of planting (T2). Planting in the sand substrate using semi-hardwood cuttings (m) causes increase in number of branches, leaves, fresh weight, number of roots and root length