Zinc and manganese nutrients influence on yield and some qualitative attributes of Hamedan white garlic

With the increasing of demand for medicinal plants, the world consumption of garlic in many continues is growing. Therefore, the quality can influence the acceptability of the products by consumers. The study was conducted to investigate the effect of Zinc (Zn) and Manganese (Mn) micronutrients on yield and growth parameters of garlic (Allium sativum L.).  The experiment was laid out in Hamedan province during 2010-2012 as factorial experiment based on randomized complete block design with three replications. The experimental was conducted with four levels of Zn (0, 20, 40 and 60 kg ha-1) and three levels of Mn (0, 20 and 40 kg ha-1). As the results, the yield and growth parameters correlated significantly with increasing of zinc concentration. The highest yield (7997 kg ha-1) was obtained by application of 20 kg ha-1 zinc sulfate respective to the control (6099 kg ha-1). Significant correlation was obtained between Mn concentration and plant yield, and soluble solids concentration only. The interaction of Zn and Mn application were significant on number of gloves and brix. In general, to increase the yield and improvement the quality of garlic, application of 20 kg ha-1 zinc sulfate and 40 kg ha-1 manganese sulfate could be recommended for regions and conditions like of current project conditions.