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| Influence of Droplet Size and Spray Volume on Retention of Chlorpyrifos on Cabbage Leaves |
| Zhu Jinwen; Shi Jiang; Zhu Guonian; et al. |
| Institute of Pesticide and Environmental Toxicology; Zhejiang University; Hangzhou 310029; Hangzhou Institute of Vegetable Science |
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Abstract The retention characteristics of chlorpyrifos droplets on cabbage leaves were detected by using the tracer of ponceau S. The results indicated that the chlorpyrifos droplets were apt to deposit when the droplet size (VMD) was 157. 3 μm. The retention of chlorpyrifos treated with the droplet size of 149.5μm and spray volume 192 L·hm-2 was 1. 36 times more than that treated with droplet size 233.7μm and spray volume 695 L·hm-2. The deposition on cabbage leaves was maximum when the spray volume was 383 L·hm -2...
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Received: 24 June 2003
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