Abstract
Headline fungicide was recently registered for management of foliar diseases on alfalfa. The effect of disease control on yield, forage quality, and potential return on investment for fungicide application was determined for field experiments conducted at five locations in 2012, three in Wisconsin and two in Minnesota. Headline reduced defoliation in 12 out of 14 harvests and increased forage yield and return on investment in 5 out 12 harvests compared to the untreated control. Headline plus the insecticide Warrior II reduced defoliation in 10 out of 14 harvests and increased yield and return on investment in four harvests compared to Warrior II alone. Two common foliar pathogens were highly sensitive to pyraclostrobin, the active ingredient in Headline. For Phoma medicaginis, the in vitro EC 50 was 2.3 ng pyraclostrobin/ml and for Stemphylium globuliferum the EC 50 was 52 ng pyraclostrobin/ml. The results indicate that fungicide application can increase yields under higher disease pressure and increase crude protein when the crop is harvested at later developmental stages. Accepted for publication 25 June 2013. Published 17 September 2013.
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Claims 8
Claim · model-written summary
Headline reduced alfalfa defoliation in 12 of 14 harvests compared with the untreated control.
- Taxon
- alfalfa
Medicago sativae2 - Treatment
- Headlinee1
- Outcome
- defoliatione1
- Direction
- reducede1
- Value
- 12 out of 14 harvestse1
- Comparator
- untreated controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Headline reduced defoliation in 12 out of 14 harvests and increased forage yield and return on investment in 5 out 12 harvests compared to the untreated control”
e2“Headline fungicide was recently registered for management of foliar diseases on alfalfa”
Claim · model-written summary
Headline increased alfalfa forage yield and return on investment in 5 of 12 harvests compared with the untreated control.
- Taxon
- alfalfaMedicago sativae2
- Treatment
- Headlinee1
- Outcome
- forage yield and return on investmente1
- Direction
- increasede1
- Value
- 5 out 12 harvestse1
- Comparator
- untreated controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Headline reduced defoliation in 12 out of 14 harvests and increased forage yield and return on investment in 5 out 12 harvests compared to the untreated control”
e2“Headline fungicide was recently registered for management of foliar diseases on alfalfa”
Claim · model-written summary
Headline plus the insecticide Warrior II reduced alfalfa defoliation in 10 of 14 harvests compared with Warrior II alone.
- Taxon
- alfalfaMedicago sativae2
- Treatment
- Headline plus the insecticide Warrior IIe1
- Outcome
- defoliatione1
- Direction
- reducede1
- Value
- 10 out of 14 harvestse1
- Comparator
- Warrior II alonee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Headline plus the insecticide Warrior II reduced defoliation in 10 out of 14 harvests and increased yield and return on investment in four harvests compared to Warrior II alone”
e2“Headline fungicide was recently registered for management of foliar diseases on alfalfa”
Claim · model-written summary
Headline plus the insecticide Warrior II increased alfalfa yield and return on investment in four harvests compared with Warrior II alone.
- Taxon
- alfalfaMedicago sativae2
- Treatment
- Headline plus the insecticide Warrior IIe1
- Outcome
- yield and return on investmente1
- Direction
- increasede1
- Value
- four harvestse1
- Comparator
- Warrior II alonee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Headline plus the insecticide Warrior II reduced defoliation in 10 out of 14 harvests and increased yield and return on investment in four harvests compared to Warrior II alone”
e2“Headline fungicide was recently registered for management of foliar diseases on alfalfa”
Claim · model-written summary
Phoma medicaginis had an in vitro EC 50 of 2.3 ng pyraclostrobin/ml.
- Taxon
- alfalfaMedicago sativae2
- Treatment
- pyraclostrobine1
- Interactor
- Phoma medicaginisAscochyta medicaginicolae1pathogen
- Outcome
- in vitro EC 50e1
- Value
- 2.3 ng pyraclostrobin/mle1
- Setting
- in vitroe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“For Phoma medicaginis, the in vitro EC 50 was 2.3 ng pyraclostrobin/ml”
e2“Headline fungicide was recently registered for management of foliar diseases on alfalfa”
Claim · model-written summary
Stemphylium globuliferum had an in vitro EC 50 of 52 ng pyraclostrobin/ml.
- Taxon
- alfalfaMedicago sativae2
- Treatment
- pyraclostrobine1
- Interactor
- Stemphylium globuliferumStemphylium globuliferume1pathogen
- Outcome
- EC 50e1
- Value
- 52 ng pyraclostrobin/mle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“for Stemphylium globuliferum the EC 50 was 52 ng pyraclostrobin/ml”
e2“Headline fungicide was recently registered for management of foliar diseases on alfalfa”
Claim · model-written summary
Fungicide application can increase alfalfa yields under higher disease pressure (author interpretation).
- Taxon
- alfalfaMedicago sativae2
- Treatment
- fungicide applicatione1
- Outcome
- yieldse1
- Direction
- increasee1
- Qualifier
- under higher disease pressuree1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“fungicide application can increase yields under higher disease pressure”
e2“Headline fungicide was recently registered for management of foliar diseases on alfalfa”
Claim · model-written summary
Fungicide application can increase alfalfa crude protein when the crop is harvested at later developmental stages (author interpretation).
- Taxon
- alfalfaMedicago sativae2
- Organ / stage
- later developmental stagese1
- Treatment
- fungicide applicatione1
- Outcome
- crude proteine1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“fungicide application can increase yields under higher disease pressure and increase crude protein when the crop is harvested at later developmental stages”
e2“Headline fungicide was recently registered for management of foliar diseases on alfalfa”
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See all 16 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.