| Title |
Correlations of Irrigation Water Quality to Yield and Quality of Rice Grain |
| Authors |
최선화 ( Sun Hwa Choi ) ; 최호진 ( Ho Jin Choi ) ; 장정렬 ( Jeon Ryeol Jang ) ; 이승헌 ( Seung Heon Lee ) ; 오종민 ( Jong Min Oh ) |
| Keywords |
Irrigation water; Water quality; BOD; T-N; T-P; pH; ECw; Rice yield; Grain appearance quality; Rice quality |
| Abstract |
This study was carried out to investigate the effects of irrigation water pollution on the yield and grain quality of rice. It acquires fundamental data to set up water quality standards for irrigation and produce agricultural safety products. The correlations of BOD, T-N, T-P, pH, ECw of the irrigation water with yield, grain appearance quality, and the protein content were evaluated. The field and pot experiments were conducted by using Japonica of Oryza sativa L. during 2 years. BOD concentration in irrigation water effects strongly on grain appearance quality and yield of rice. T-N in irrigation water has strong effect on the yield, appearance, and quality of rice. T-P concentration in irrigation water have not any correlation with yield and quality of rice. pH showed strongly negative correlation with maturity ratio(MTR), 1000 grain weight(TGW), and yield of rice(YLD) as r=-0.803~-0.828(p＜0.001) and have no effect on the appearance quality of rice. EC_w indicating salt content showed strongly negative correlation with MTR, TGW, number of grains per panicles(NGP), and number of panicles per unit area(NPM) as r=-0.759~0.798, and with YLD as -0.753. |