False chinch bugs occasionally become abundant when conditions favor survival on various weed hosts, particularly wild mustards. They have a wide host range and as many as four generations per year. Fields planted no-till into wheat stubble where weed control was delayed until just before planting, and fields bordering weedy areas are most at risk. False chinch bugs appear to spend little time on sorghum plants, but abundant populations can reduce stands. False chinch bug adults also can swarm into sorghum fields later in the season
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Infestations averaging 140 bugs per panicle during milk stage are considered damaging. But swarms of adults usually are spotty. Unless several spots are present, it is usually hard to justify field-wide treatment.
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This content may not be suitable for other states than Kansas.
|
Insecticide |
Rate |
|
Alpha-cypermethrin (Fastac EC) |
3.2 to 3.9 fl. oz./acre |
|
Beta-cyfluthrin (Baythroid XL) |
0.010 to 0.022 lbs. a.i./acre (1.3 to 2.8 fl. oz.) |
|
Chlorpyrifos plus zeta-cypermethrin (Stallion) |
9.25 to 11.75 fl. oz./acre |
|
Zeta-cypermethrin (Mustang MAXX, Respect EC, etc.) |
0.02 to 0.025 lb. a.i./acre (3.2 to 4.0 fl. oz.) |