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Cooperative Economic Insect Report, Vol. 21: March 12, 1971 (Classic Reprint)
Cooperative Economic Insect Report, Vol. 21: March 12, 1971 (Classic Reprint)
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Description
Armyworm was not a problem in new york, even on untreated sweet corn. In delaware, moths were very numerous by early May in blacklight trap collections. Larvae heavily damaged barley, wheat, and corn in some areas of Kent and Sussex Coun ties ih late May and early June. Adults were again very numerous in all areas of Delaware during late June and early July. Armyworm infestations on small grain in maryland were below normal for the third consecutive year. Infestations in early corn were generally light, although an estimated acres of no-tillage corn required controls during June. With the future increases in no-tillage corn practices, armyworm damage is expected to increase in Maryland. Larvae causedsevere, economic damage to sod-planted seedling corn in virginia. Damage was reported by the third week of May in Amelia, Lancaster, Franklin, Pulaski, Spotsylvania, Powhatan, Montgomery, Cumberland, and Smythe Counties, and at Virginia Beach. Damage was also severe in Craig, Rockingham, and Montgomery Counties. In Grayson County, 90 percent of all no - till corn required spraying. The overwintered armyworm generation pupated in Montgomery County during the third week of June and moths had emerged by the fourth week of June. Larvae were first reported damaging rye, barley, oats, and wheat May 20 in Accomack and Northampton Counties on the Eastern Shore of Virginia. Most infestations were in connection with fields to be used for sod - planted corn.
Armyworm moth catches were heavy in blacklight traps in west virginia. Peak col lections occurred the second week of July. Damage to sod - planted corn was reported to range from 10 to 20 percent in Hampshire, Hardy, Pendleton, and Hancock Counties the last week of June. Armyworm infestations on small grains occurred later and damage was less than usual in Calhoun County, south carolina. There was enough larval damage to affect yields.
Product details
- Languages:
- Published: English , Original: English
- Number of Pages:
- 44
- Publisher:
- Forgotten Books
- Publication Date:
- 2017-11-19
- Weight:
- 218 g
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