Effect of Early Foliar Disease Control on Wheat Scab Severity (Fusarium graminearum) in Argentina

Table 3

Effect of early fungicides sprays on scab severity, yield, infected kernel, and weight grains in 2009 season.

Treatments	Dose (L/ha^−1)	Rust severity^1	Leaf bloth severity^2	Scab severity^3	Yield (t/ha)	Infected kernel (%)	Weight 1000 seeds (g)
Check	—	8/5	7/20	29b	3.35bc	16c	32.3ab
Check + inoculation	—	8/5	7/20	75a	2.59e	62a	29.6b
Z31 trifloxystrobin + cyproconazole 267.5SC	140+60	5/15	4/25	25b	3.33bc	14c	35.5a
Z31 trifloxystrobin + cyproconazole 267.5SC + inoculation	140+60	5/15	4/25	69a	3.20c	36b	29.5b
Z61 tebuconazole 25EW	187.5	5/15	7/20	1c	3.98a	0d	35.4a
Z61 prochloraz 45EC	450	8/5	7/20	1c	3.90ab	0d	34.9a
Z61 metconazole 9SL	90	8/5	7/20	2c	4.10a	2d	36.1a
Z61 tebuconazole 25EW + inoculation	187.5	8/5	7/20	8c	3.86ab	4d	35.0a
Z61 prochloraz 45EC + inoculation	450	8/5	7/20	8c	3.79abc	0d	34.9a
Z61 metconazole 9SL + inoculation	90	8/5	7/20	10c	3.91ab	2d	35.2a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 tebuconazole 25EW	140+60+187.5	5/15	4/25	5c	4.12a	2d	35.9a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 prochloraz 45EC	140+60+450	5/15	4/25	5c	4.15a	1d	36.1a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 metconazole 9SL	140+60+90	5/15	4/25	1c	4.20a	0d	35.8a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 tebuconazole 25EW + inoculation	140+60+187.5	5/15	4/25	9c	3.88ab	1d	36.2a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 prochloraz 45EC + inoculation	140+60+450	5/15	4/25	9c	3.93ab	1d	36.7a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 metconazole 9SL + inoculation	140+60+90	5/15	4/25	10c	3.99a	2d	35.9a
LSD (𝑃=0.05)				12	0.56	8	5.4

1and2[15]. Where 1st digit = foliar number and 2nd digit = % severity. ³[14].
Within a column, means followed by the same letter are not significantly different (𝑃=0.05).