Viola odorata (Sweet Violet) Plant's Growth and Chemical Components are affected by Irrigation Intervals and Natural Anti-Transpiration

Abstract

This study was carried out to investigate the effect of irrigation intervals (every 1, 2 and 3 days) and some natural anti-transpiration (humic acid, CaCO3 and MgCO3) as well as their interactions on growth, flowering, concrete yield, total carbohydrates % , total chlorophylls % and chemical constituents of Viola odorata obtained results showed that, the highest values of vegetative growth parameters (herb fresh and dry weight g/plant and flowers fresh and dry weight g/plant) as well total carbohydrates % , total chlorophylls % and chemical composition (nitrogen, phosphorus and potassium percentages/ plant) could be achieved by irrigated every one day combined with spraying plants with humic acid at 2kg/feddan. However, the highest value of leaves and flowers concrete % obtained under irrigated every two days interval applied to plants combined with spraying plants with humic acid at 2kg/feddan. Also the same treatment gave the highest value of main constituents of the volatile oil leaves and flowers which were butyl-2 ethylhexyl phthalate followed by 5,6,7,7a-tetrahydro-4,4,7a-trimethyl-2(4H)-benzofuranone-2-yloxy) butan-2-ol.