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Pre-bloom plant bug management
Story Date: 7/3/2020
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Source: NCSU COOPERATIVE EXTENSIN, 6/30/20
With cotton moving into squaring it’s a good time to think about a game plan for tarnished plant bugs. In recent years, tarnished plant bug infestations have extended far into the blooming period. Because insecticide resistance is a real issue for this pest, planning a solid insecticide rotation will be important for long-term control in cotton. Before bloom, our goal is to keep 80% of the squares on the plant. If squares are dropping off pre-bloom, it’s a good bet that plant bugs are to blame. However, use a combination of plant bug presence (8 plant bugs in 100 swooshes of the net) plus 80% square retention as a threshold to trigger sprays.
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