Pear, Agri-Mek Dilute and Concentrate Evaluation, 1992 | Zendy

Philip VanBuskirk | Zendy; Richard Hilton | Zendy

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Pear, Agri-Mek Dilute and Concentrate Evaluation, 1992

Author(s) -

Philip VanBuskirk,

Richard Hilton

Publication year - 1993

Publication title -

insecticide and acaricide tests

Language(s) - English

Resource type - Journals

ISSN - 0276-3656

DOI - 10.1093/iat/18.1.61

Subject(s) - pear , sprayer , orchard , horticulture , randomized block design , shoot , botany , spider mite , biology , mathematics , agronomy , pest analysis

The orchard consisted of mature ‘Bosc’ pears tree planted on a 7.6 m by 7.6 m spacing. Treatments were applied: 11 Jun (2nd cover) by using an air carrier sprayer set to deliver 2338.2 liter/ha (dilute) or 935.3 liter/ha (concentrate). Plots consisted of 4 X 5 tree rectangles replicated 3 times in a randomized block design. Additional sprays applied to the entire orchard during the trial were Imidan 50% WP 5.69 kg/ha applied 2 Jul. Treatments were evaluated at 1-wk intervals. Samples consisted of 20 leaves from the tree centers and 20 leaves from the middle of 20 terminal shoots selected at random. Arthropods were removed from leaves using a mite brushing machine and PP eggs and nymphs, and TSSM eggs and post-egg stages were counted with the aid of a dissecting microscope.

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