Abstract
Abstract Vates’ collards were direct seeded in 4 row plots 35 ft long on 18 Jul. 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 26 Aug; 3, 9, 18 and 23 Sep. Foliage injury ratings ranged from 0-5 and were indexed as follows: 0) no damage; 1) 1-3% 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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