Factors in Paraquat-Induced Chlorosis with Phaseolus Foliar Tissues1
- Don L. Barnes and
- J. Q. Lynd2
Bioassay procedures with leaf disks from Phaseolus vulgaris L., Indian bean, were used to determine factors influencing ( 1,1′-dimethyl-4,4'bipyridinium) paraquat activity. Relative phytotoxicity was determined by varying herbicide levels from 0 to 1.0 ppm ai with light intensity, temperature and reaction time. Reduction of extractable chlorophyll was closely related to increased paraquat concentrations. Increased time, temperature and light intensity accelerated rate and magnitude of leaf disk chlorosis induced with active paraquat levels.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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