Evaluation of BAS 300 001 and Bas 300 111 for Citrus Rust Mite Control on Texas Citrus, 1992

Abstract

Experimental BAS 300 001 and BAS 300 111, alone and tank mixed with ATPLUS 411 spray oil, were compared to Vendex for efficacy against CRM. Treatments were randomly assigned to single tree plots and replicated 4 times in a 30-yr-old grapefruit orchard on 16 x 22 ft spacing. Trees were sprayed on 4 Jun to foliar runoff (ca. 3.0 gal/tree) by handgun using a portable Hypro 5200 high pressure sprayer operating at 200 psi. Post spray counts were made at 7 days and at ca. 2-week intervals thereafter. At each count date, 13 fruit per replicate (52/treatment) were randomly selected at arms length in the tree canopy and examined for CRM in situ with a 10 X handlens. All live CRM were counted in two, 1-cm2 lens fields on each fruit. The two counts per fruit were averaged and recorded as one observation.