Abstract
Abstract ‘Vates’ collards were direct seeded in 4-row plots 35 ft long on 23 July ’84. Plants were spaced 4 inches apart in the row and 36 inches between rows. Each 2-row plot was buffered by a guard row. The treatments were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk “A” loamy sand. All spray treatments were mixed in 10 gal of water and applied with a custom built row crop sprayer. Each row was covered by 3 drop nozzles delivering 50 gal/A at 90 psi. Treatments were applied on 28 Aug; 4, 11, 18, 23 Sep; 2 and 10 Oct. Foliage injury ratings ranged from 1-5 and were indexed as follows: 1) 0-3% damage―odd holes on leaves; 2) 4-10% damage―few leaves with holes; 3) 11-25% damage―moderate number of leaves with holes; 4) 26-50% damage―most leaves with holes; and 5) 51-100% damage―crown damage and/or all leaves with holes.
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