Prosper Trial #2, 1998
- Disease Severity Disease Ratings (% Severity Early Blight)
Trt. Chemical Rate Schedule Interval 14-Aug 20-Aug 26-Aug 31-Aug 47 Bravo WS Exp 1 + Exp 2 1.5 pt/a 0.022 lb ai/a + 0.134 lb ai/a Appl. 1 & 2 Appl. 3-9 7 day 36.6 38.4 51.3 40.0 48 Bravo WS Exp 1 + Polyram 1.5 pt/a 0.044 lb ai/a + 1.25 lb ai/a Appl. 1 & 2 Appl. 3-9 7 day 37.2 37.2 64.1 76.8 49 Bravo WS Bravo WS + Super Tin 1.5 pt/a 1.5 pt/a + 2.5 oz/a Appl. 1 Appl. 2-9 7 day 55.9 53.1 71.9 70.6 50 Bravo WS Bravo WS + Super Tin 1.5 pt/a 1.25 pt/a + 2.5 oz/a Appl. 1 Appl. 2-9 7 day 44.4 50.0 68.8 78.8 51 Bravo WS Bravo WS + Super Tin 1.5 pt/a 1.0 pt/a + 2.5 oz/a Appl. 1 Appl. 2-9 7 day 50.3 54.4 69.7 90.1 52 Manex C-8 Super Tin + Manzate 200 DF 1.5 lb pr/a 3.75 oz/a + 1.5 lb pr/a Appl. 1, 3, 5, 7, 9 Appl. 2, 4, 6, 8 7 day 40.9 50.3 61.3 66.6 53 Manex C-8 Super Tin + Manzate 200 DF 1.5 lb pr/a 3.75 oz/a + 1.5 lb pr/a Appl. 1, 2, 3, 4 Appl. 5, 6, 7, 8, 9 7 day 35.6 36.6 54.4 60.3 54 Manex C-8 Pro-tex 1.5 lb pr/a 1.5 qt/a Appl. 1, 3, 5, 7 Appl. 2, 4, 6, 8, 9 7 day 59.1 71.3 90.1 100.0 55 Manex C-8 Pro-tex 1.5 lb pr/a 1.5 qt/a Appl. 1, 2, 3, 4 Appl. 5, 6, 7, 8, 9 7 day 57.5 71.6 92.0 100.0 56 Super Tin + Cymoxanil 60 DF 3.75 oz/a + 2 oz ai/a Full Season 7 day 49.7 51.3 65.9 61.6 57 Early Harvest PGR Super Tin + Cymoxanil 60 DF 1.5 fl oz/a 3.75 oz/a + 2.0 ai oz/a Appl. 1, 2, 3, 4 Full Season 7day 40.0 50.3 62.8 59.4 58 Super Tin Manex C-8 Kocide 2000 + Manzate 200 DF 5 oz/a 1.5 lbs/a 3 lbs/a + 1.5 lb/a Begin spraying at 5% infection. Spray every 3-5 days for 3 sprays (1, 2, 3) Appl. 4, 5, 6 Appl. 7, 8, 9 (If only 8
applic's; apply only Kocide after VK.) 3 - 5 day 7 day 7 day 58.8 73.1 81.3 93.9 59 Champ 2 + Bravo Zn Champ 2 + Bravo Zn 2 pt/a + 1.8 pt/a 2.67 pt/a + 2.0 pt/a Appl. 1 & 2 Appl. 3-9 7 day 33.1 38.8 61.6 61.3 60 Untreated - - - 85.6 86.9 88.5 100.0 LSD0.05 19.8 17.0 14.4 14.6