Influences of different weed control practices on hot-season vegetable-field weed communities in South China HERBICIDE-INDUCED OXIDATIVE STRESS IN SEEDLINGS OF TWO RICE CULTIVARS WITH DIFFERENT CHILLING TOLERANCE Responses of Rice Seedlings in Different Drought Tolerant Cultivars to Oxidative Stress Carbon Monoxide: A Novel Antioxidant Against Oxidative Stress in Wheat Seedling Leaves Effects of paraquat on soil microorganism The Effects of Manipulated Activated Oxygen Metabolism on Photoinhibition in Leaves of Poplars Suffering Root Osmotic Stress