Abstract
AbstractThe uniformity and efficiency of agricultural chemical spray solutions on plants, such as sucker control chemicals on tobacco (Nicotiana tabacum L.), needs to be determined. This study was conducted to determine if cupric ion could be used as a tracer to measure the spray applicaton efficiency of a tobacco sucker control chemical. Chlorpropham (1‐methylethyl 3‐chlorophenylcarbamate) was amended with 1.92 mmol of cupric sulfate (CuSO4˙5H2O) to determine the relationship between leaf Cu concentration and tobacco sucker control, as measured by per unit reduction of sucker Weights. Leaf Cu was correlated positively with sucker control (r = 0.70) and negatively with sucker weights (r = −0.69). These results indicate that cupric ion can be used as a tracer to measure the spray application efficiency of agricultural chemicals on plants.
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