Control of Thrips on Anthurium, HI, 1992:

Efficacy trials were conducted from 4 Nov 91 through 29 May 92. Mature plants growing in 7.6 liter bags in volcanic cinder media under 80% polypropylene shade cloth were used in this study. Experimental plots measured 1.8 by 1.8 m with 36 plants per block, arranged in a RCB with four blocks. Seven biweekly applications of NTN 33893 240F were applied from 5 Nov through 28 Jan to runoff using a compressed air sprayer with an 8004 Teejet nozzle at 276 KPa. Triton B-1956 was added to NTN 33893 240F and the control at a rate of 0.23 ml per liter solution. NTN 33893 0.5 G was applied once on 4 Nov and watered immediately after treatment. Anthurium flowers were harvested biweekly at ¾ to full maturity and observed for thrips injury characterized by distinct bleached streaks on the front and/or back of the spathe. Pre-treatment data was taken on 11 and 25 Oct. Biweekly data were pooled for analysis.