Apple, Preliminary Insecticides Test, 1976 | Zendy

H. Reissig | Zendy; D. H. Dunham | Zendy; Harold E. Hebding | Zendy

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Apple, Preliminary Insecticides Test, 1976

Author(s) -

H. Reissig,

D. H. Dunham,

Harold E. Hebding

Publication year - 1977

Publication title -

insecticide and acaricide tests

Language(s) - English

Resource type - Journals

ISSN - 0276-3656

DOI - 10.1093/iat/2.1.23a

Subject(s) - sprayer , horticulture , randomized block design , canopy , biology , tree (set theory) , orchard , cultivar , block (permutation group theory) , toxicology , botany , mathematics , agronomy , mathematical analysis , geometry

Sprays were applied dilute to run off with a hand sprayer (450 psi) 2nd through 6th cover sprays on June 18, June 28, July 14, August 2, and August 18. Each treatment was replicated 3 times on single tree plots (2 Mcintosh and 1 Cortland cultivars) arranged in a randomized block design. At harvest 150 and 100 fruit were scored, respectively, from each Mcintosh and Cortland tree. Ten actively growing terminals/tree collected on June 30 were placed in a Berlese funnel to sample apple aphids. White apple leafhoppers were counted on 10 distal leaves of 10 terminals on each tree on August 30. The number of leaves infested with spotted tentiform leafminers was recorded during a 10 minute search around the canopy of each tree from the ground to eye level on August 30.

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