Cooperative Economic Insect Report, Vol. 21: October 8, 1971 (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Cooperative Economic Insect Report, Vol. 21: October 8, 1971

Iowa Percent infestation lower than 1970 in southern districts. State averages for percent plants infested (81 versus 76) and borers per 100 plants (321 versus 241) increased. More borers fifth instar in 1971 than in 1970. (iowa Ins. North carolina Larval infestations in milo in Piedmont and Coastal Plains. Limited survey showed 50 percent of plants in one field infested near Plymouth, Washington County. (hunt, Van Duyn).

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