Groundwater Table Effects on Yield, Growth and Water Use of Canola (Brassica napus L.) Plant

Abstract

Lysimeter experimental studies were conducted in a greenhouse to investigate canola (Brassica Napus) plant water use, growth and yield parameters under three different water table depths of 30, 60, and 90 cm. Additionally, control experiments were conducted and only irrigation was applied to these lysimeters without water table limitation. Canola plant’s tolerance level to shallow groundwater was determined. Results showed that groundwater contributions to canola plant were 97, 71, and 68%, while the average grain yields of canola were 4.5, 5.3, and 6.3 gr for the treatments of 30, 60, and 90 cm water table depths, respectively. These results demonstrated that 90 cm water table depth is the optimum depth for canola plant to produce high yield with the least amount of water utilization.