Abstract
Economic decision criteria for adopting a particular input strategy are income above variable cost (IAVC) and net return to management (NRM). Field experimental data on the effectiveness and yield potential of different herbicides in peanut (Arachis hypogaea L.) production over a 3 yr period were used to analyze the consistency of these two decision criteria. Seven early postemergence herbicide (EPOST) treatments were applied 3 to 7 d after peanut emergence and three other postemergence herbicide (POST) treatments are applied 14 to 24 d after peanut emergence. The resulting 21 herbicide combinations were compared for the two economic criteria to find whether treatments were ranked differently. Almost identical herbicide combination rankings were found for the two criteria, and the treatment using EPOST paraquat followed by paraquat + 2,4-DB + bentazone was found to be tbe best treatment by both criteria. NRM also provides an indication of desirability for producing peanuts over time using a specific herbicide strategy.
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