Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease Pressure

Table 3

Net return per hectare based on the use of fungicides under no disease pressure^a,b.

	HBK 5025		NKS51-T8		DP 5335		PIONEER 95Y01
Fungicide	2010	2011	2010	2011	2010	2011	2010	2011
	$/ha
Untreated	3076	721	1966	671	1899	766	2402	713
Prothioconazole + trifloxystrobin	2839	692	2281	578	2087	585	2280	524
Pyraclostrobin	3119	541	2082	591	1924	682	2342	515
LSD (0.05)	150	59

aFungicide rate: prothioconazole at 0.04 kg/ha + trifloxystrobin at 0.15 kg/ha; pyraclostrobin at 0.11 kg/ha.
^bSoybean price: $0.59/kg; fungicide application costs: $12/ha/application (2 applications) for a total cost of $24/ha; fungicide costs for 2 applications, prothioconazole + trifloxystrobin: $104/ha; pyraclostrobin: $90/ha. Therefore, prothioconazole + trifloxystrobin costs were $128/ha while pyraclostrobin costs were $115/ha.