Abstract
Strobilurin fungicides, including pyraclostrobin, protect many crops from several fungal pathogens and create opportunities to increase plant health and yields. However, corn (Zea mays L.) and many other plants’ physiological responses to pyraclostrobin include increases in processes that require nutrients. By applying foliar fertilizers, growers can adjust their nutrient-management strategy based on the plant’s reaction to pyraclostrobin. Identifying plants’ increased nutrient demands and meeting them with a foliar fertilizer at the time of fungicide application (tasselling) could increase yields. This study evaluated effects of foliar-applied pyraclostrobin at 0.11 kg ha-1 a.i. with or without 13 commonly available foliar fertilizers on yield, tissue macro- and micronutrient concentrations, severity of disease, and grain quality. Field research occurred at three University of Missouri research centers from 2008-2009. One foliar fertilizer, 0-0-30-0, caused up to 20% crop injury. Diseases affected plants in all six site-years, but overall severity was low (≤ 2%) and likely did not impact crop performance. Pyraclostrobin increased ear leaf B and Cu concentrations over all site-years seven days after treatment, and decreased N concentrations at one site-year. Grain yields increased 5% at two research sites with pyraclostrobin, and one location had increased grain moisture and grain oil at harvest. One foliar fertilizer, 30-0-0-0, increased grain yields by 10% at two sites compared to the non-treated control. However, foliar fertilizers showed no observable effects on grain quality characteristics, and none of the foliar fertilizers negatively impacted grain yield.
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Claims 10
Claim · model-written summary
Pyraclostrobin increased ear leaf boron and copper concentrations in corn over all site-years, seven days after treatment.
- Taxon
- corn
Zea mays subsp. mayse1 - Organ / stage
- ear leafe2
- Treatment
- Pyraclostrobine2
- Outcome
- ear leaf B and Cu concentrationse2
- Direction
- increasede2
- Qualifier
- seven days after treatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e2“Pyraclostrobin increased ear leaf B and Cu concentrations over all site-years seven days after treatment, and decreased N concentrations at one site-year”
Claim · model-written summary
Pyraclostrobin decreased nitrogen concentrations in corn at one site-year.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Pyraclostrobine2
- Outcome
- N concentrationse2
- Direction
- decreasede2
- Qualifier
- at one site-yeare2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e2“Pyraclostrobin increased ear leaf B and Cu concentrations over all site-years seven days after treatment, and decreased N concentrations at one site-year”
Claim · model-written summary
Pyraclostrobin increased corn grain yield by 5% at two research sites.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- pyraclostrobine3
- Outcome
- Grain yieldse3
- Direction
- increasede3
- Value
- 5%e3
- Setting
- two research sitese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e3“Grain yields increased 5% at two research sites with pyraclostrobin, and one location had increased grain moisture and grain oil at harvest”
Claim · model-written summary
At one location, corn grain moisture and grain oil increased at harvest.
- Taxon
- cornZea mays subsp. mayse1
- Organ / stage
- graine3
- Outcome
- grain moisture and grain oile3
- Direction
- increasede3
- Setting
- one locatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e3“Grain yields increased 5% at two research sites with pyraclostrobin, and one location had increased grain moisture and grain oil at harvest”
Claim · model-written summary
Foliar fertilizer 0-0-30-0 caused up to 20% crop injury in corn.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- 0-0-30-0e4
- Outcome
- crop injurye4
- Direction
- causede4
- Value
- up to 20%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e4“One foliar fertilizer, 0-0-30-0, caused up to 20% crop injury”
Claim · model-written summary
Foliar fertilizer 30-0-0-0 increased corn grain yield by 10% at two sites compared with the non-treated control.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- 30-0-0-0e5
- Outcome
- grain yieldse5
- Direction
- increasede5
- Value
- 10%e5
- Comparator
- non-treated controle5
- Setting
- two sitese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e5“One foliar fertilizer, 30-0-0-0, increased grain yields by 10% at two sites compared to the non-treated control”
Claim · model-written summary
Foliar fertilizers had no observable effect on corn grain quality characteristics.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- foliar fertilizerse6
- Outcome
- grain quality characteristicse6
- Direction
- no observable effectse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e6“However, foliar fertilizers showed no observable effects on grain quality characteristics, and none of the foliar fertilizers negatively impacted grain yield”
Claim · model-written summary
No foliar fertilizer negatively impacted corn grain yield.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- foliar fertilizerse6
- Outcome
- grain yielde6
- Direction
- negatively impactede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e6“However, foliar fertilizers showed no observable effects on grain quality characteristics, and none of the foliar fertilizers negatively impacted grain yield”
Claim · model-written summary
Disease severity in corn was low (≤ 2%) across all six site-years.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- overall severitye7
- Direction
- lowe7
- Value
- ≤ 2%e7
- Setting
- all six site-yearse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e7“Diseases affected plants in all six site-years, but overall severity was low (≤ 2%) and likely did not impact crop performance”
Claim · model-written summary
Disease in corn likely did not impact crop performance.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- crop performancee7
- Direction
- did not impacte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“corn (Zea mays L.)”
e7“Diseases affected plants in all six site-years, but overall severity was low (≤ 2%) and likely did not impact crop performance”
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