Effect of Sulfur Dioxide and Hydrogen Fluoride on Yield of Rice Plant in Industrial Area
1994 Volume 29 Issue 3 Pages 105-112
Details
1994 Volume 29 Issue 3 Pages 105-112
We studied multiple effects of sulfur dioxide and hydrogen fluoride on leaf damage, weight of grain, panicles per hill, spikelets per panicle and percentage of ripened grains of rice plant.
The correlation coefficient between ambient concentrations of sulfur dioxide measured as sulfur oxides (SOx) and sulfur contents in leaves ranges from 0.713 to 0.910. That between the percent leaf damage and the sulfur and fluorine contents in leaves ranges from 0.807 to 0.978.
The panicles per hill is significantly affected by hydrogenfluoride than sulfur oxides. The spikelets per panicle have been affected slightly while the 1000-grain-weight has not been affected. It is suggested that the reduction of rice yield under polluted field conditions may have been caused by the diminution of panicles per hill and the percent fertility rather than by that of spikelets per panicle and the grain weight.
