Aphid Control, 1990 | Zendy

E. H. Beers | Zendy; R. W. Browne | Zendy

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Aphid Control, 1990

Author(s) -

E. H. Beers,

R. W. Browne

Publication year - 1991

Publication title -

insecticide and acaricide tests

Language(s) - English

Resource type - Journals

ISSN - 0276-3656

DOI - 10.1093/iat/16.1.3

Subject(s) - aphid , acre , orchard , randomized block design , horticulture , tree (set theory) , forestry , mathematics , biology , toxicology , zoology , agronomy , geography , mathematical analysis

This test was conducted in an 11-yr-old orchard with under-tree irrigation. The experimental design was randomized complete block with 6 treatments and 4 replications. The blocking factor was pretreatment aphid density on 23 Jul. Experimental units were single trees. Sample units were the most heavily infested leaf on each of 3 tagged terminals/tree. Treatments were applied on 26 Jul. Per-acre rates were based on a dilute application of 400 gal/acre applied to the point of drip with a handgun operated at 300 psi. Posttreatment counts were taken at 5 h, 72 h, 1 wk and weekly thereafter.

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