Abstract
Abstract The plant growth regulator tetcyclasis applied as a seed treatment [75% wettable powder (WP)] had growth-retarding effects on sweet corn (Zea mays L. ‘Silver Queen’), and modified water use. Tetcyclasis at rates of 0.05, 0.1, and 0.2 g a.i./kg of seed significantly retarded top growth, while having no effect on root length for 28 days after planting. Water use on a per gram of plant tissue basis tended to be lower under cool-season conditions and equal under warm-season conditions among tetcyclasis seed treatments as compared to nontreated controls. Chemical names used: 5- (4-chlorophenyl)-3,4,5,9,10-pentaaza-tetracyclo(5,4,l,02,6,08,11) dodeca-3,9-diene (tetcyclasis).
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