Field experiments were conducted at the Experimental Farm of Faculty of Agriculture, Assiut University, Egypt in three consecutive winter seasons of 2004-2005, 2005-2006 and 2006-2007. The aim of the present experiments were to determine the effects of three planting dates, fifteen garlic ecotypes (11 Balady and 4 Chinese ecotypes) and two plant density (30 and 60 cloves in each row sides) on garlic quality under Assiut province conditions. The obtained results indicated that percentage of total soluble solids, percentage of vitamin C and percentage of sulphur were increased by early planting. However late planting increased the percentage of volatile oil.
Ecotypes from Balady surpassed Chinese in content of vitamin C and percentage of sulphur. On the other hand, Chinese ecotypes surpassed Balady ecotypes in percentage of total soluble solids, and percentage of volatile oil.
Plant density did not show
any significant effect in any of the four studied treats.