Appropriate water level is the primary factor for the optimal yield of crop plants. The required water level varies according to the variety of the crops. In the present study, we investigated the optimum requirement of groundwater level(GWL) to grow sorghum and adzuki bean under paddy field soil. Here, we cultivated sorghum and adzuki bean using lysimeter filled with paddy soil under GWL 0 cm(NT) and GWL(20, 40 cm) where GWL 20 cm is maintained as a waterlogging condition. The plant growth promoting attributes were measured on the first day after treatment(0 DAT), 10 DAT and 20 DAT. The results showed that the growth parameter such as shoot length, leaf length, leaf width, and stem thickness of both sorghum and adzuki bean were constantly increased and were found higher at GWL 40 cm(except stem thickness and leaf width in sorghum at 20 DAT). The physiological parameters such as chlorophyll content and stomatal conductance were also found higher at GWL 40 cm in all DAT. In addition, the elements like P and K contents in adzuki bean, and Ca content in sorghum were constantly increased and was found higher in GWL 40 cm at all DAT. These results suggest that the GWL of 40 cm is appropriate for production of sorghum and adzuki bean especially in case of paddy soil.

ABSTRACT
 Introduction
 Materials and Methods
 Results and Discussion
 References

• Hee-La Ryu(School of Applied Biosciences, Kyungpook National University)
• Arjun Adhikari(School of Applied Biosciences, Kyungpook National University)
• Sang-Mo Kang(School of Applied Biosciences, Kyungpook National University)
• Yoon-Ha Kim(School of Applied Biosciences, Kyungpook National University)
• In-Jung Lee(School of Applied Biosciences, Kyungpook National University) Corresponding author