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

Table 1

Effect of early fungicides sprays on scab severity, yield, infected kernel, and weight grains in 2007 season.

Treatments	Dose (g·ha^−1)	Rust severity^1	Leaf bloth severity^2	Scab severity^3	Yield (t/ha^−1)	Infected kernel (%)	Weight 1000 seeds (g)
Check	—	8/25	6/50	15bc	3.35cde	5cd	32.3a
Check + inoculation	—	8/25	6/50	80a	2.32f	48a	25.6b
Z31 trifloxystrobin + cyproconazole 267.5SC	140+60	5/1	4/25	12bcd	3.34cde	6cd	33.2a
Z31 trifloxystrobin + cyproconazole 267.5SC + inoculation	140+60	5/1	4/25	76a	3.10de	26b	31.6a
Z61 tebuconazole 25EW	187.5	5/1	6/50	5cd	3.82abc	2cd	34.3a
Z61 prochloraz 45EC	450	8/15	6/50	2d	3.88ab	0d	33.9a
Z61 metconazole 9SL	90	8/15	6/50	6bcd	3.94a	3cd	33.8a
Z61 tebuconazole 25EW + inoculation	187.5	8/15	6/50	18b	3.66abc	5cd	34.5a
Z61 prochloraz 45EC + inoculation	450	8/15	6/50	10bc	3.72abc	5cd	33.7a
Z61 metconazole 9SL + inoculation	90	8/15	6/50	12bcd	3.76abc	4cd	32.9a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 tebuconazole 25EW	140+60+187.5	5/1	4/5	2d	3.95a	4cd	33.9a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 prochloraz 45EC	140+60+450	5/1	4/5	0d	3.92a	3cd	34.6a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 metconazole 9SL	140+60+90	5/1	4/5	1d	4.02a	2cd	34.9a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 tebuconazole 25EW + inoculation	140+60+187.5	5/1	4/5	12bcd	3.68abc	6cd	33.2a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 prochloraz 45EC + inoculation	140+60+450	5/1	4/5	10bcd	3.75abc	6cd	33.2a
Z31 trifloxystrobin + cyproconazole 267.5SC + Z61 metconazole 9SL + inoculation	140+60+90	5/1	4/5	10bcd	3.79abc	4cd	32.7a
LSD (𝑃=0.05)				10	0.55	6.5	3.8

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).