Effects of submergence depth on the growth and tuberization of Eleocharis ochrostachys Steud.

Abstract

Eleocharis ochrostachys is considered to be a native plant in Tram Chim National Park. This study determined the effects of soil moisture and submergence conditions on the growth and tuberization of the plant. The results showed that the development of the plant was the most suitable at soil moisture of 80 -100% and submergence of 15 cm, while it poorly grew and did not produce any tuber at soil moisture of 45 - 50%. Eleocharis ochrostachys still produced tubers at continuously submergence depth of 5 cm, 10 cm and 15 cm, but its tubers were waterlogged. These results show that a suitable water level should be controlled so that the plant can grow well and produce vital tubers.