European Corn Borer Control on Sweet Corn, 1977 | Zendy

R. P. Holdsworth | Zendy

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European Corn Borer Control on Sweet Corn, 1977

Author(s) -

R. P. Holdsworth

Publication year - 1978

Publication title -

insecticide and acaricide tests

Language(s) - English

Resource type - Journals

ISSN - 0276-3656

DOI - 10.1093/iat/3.1.75a

Subject(s) - randomized block design , tassel , sprayer , loam , biology , whorl (mollusc) , horticulture , agronomy , pollen , european corn borer , botany , pest analysis , zea mays , genus , soil water , ecology

The sweet corn was planted June 10 in Brookston silty clay loam in 4 rows 200 ft by 30 inches. Each treatment plot consisted of 50 ft of row, with 4 treatments replicated 4 times in a randomized complete block design. Sprays were applied with a hand-operated compressed-air sprayer 150 gal/A on July 7 (8-9 leaf whorl), 15 (11 leaf whorl), 20 (tassel emergence) and 29 (pollen shedding). The entire plant was covered by the first 3 sprays, but spray was directed to stem and leaf axils only (not all leaf surfaces) on the last spray. Borers were counted on August 8 by dissecting 25 plants per plot. None of the insecticides were phytotoxic. Orthene and Pounce performed satisfactorily, considering the extended interval between the last 2 sprays.

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