Abstract
The role of the husk covering and the influence of intra-ear thrips infestation on severity of Fusarium ear rot (Fusarium moniliforme) were evaluated in 1990, 1991, and 1992 among corn (Zea mays) hybrids previously rated as susceptible, intermediate, or resistant to Fusarium ear rot. For the three treatments imposed on individual corn ears in 1990, ears were either left untreated, wrapped with a strip of parafilm at the ear tip to maintain a tight seal, or husk layers were split open along one side of the ear I to 2 weeks after pollination to partially expose the developing kernels. In 1991 and 1992, two additional treatments, split husks followed by acephate insecticide application and insecticide application to ears with intact husks, were added. Split husks compromised the natural barrier to insects and fungi and significantly increased Fusarium ear rot severity among all corn hybrids in 1990 and 1991. In 1992, a year with naturally high levels of disease, split husks significantly increased disease severity among the resistant hybrids, but did not affect the susceptible hybrids. Acephate applied to ears with split husks reduced ear rot among all hybrids. Grain yields were significantly less in ears with split husks for all hybrids in 1990 and 1991, and for the resistant hybrids in 1992. Grain yields were higher for all insecticide-treated hybrids each year. These results demonstrate that susceptibility to Fusarium ear rot is influenced by both husk morphology and intra-ear thrips infestation.
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Claims 8
Claim · model-written summary
Splitting husks significantly increased Fusarium ear rot in all corn hybrids in 1990 and 1991.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Split huskse0
- Outcome
- Fusarium ear rot severitye0
- Direction
- increasede0
- Qualifier
- all corn hybrids in 1990 and 1991e0
FusariumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split husks compromised the natural barrier to insects and fungi and significantly increased Fusarium ear rot severity among all corn hybrids in 1990 and 1991.”
t0“Fusarium Ear Rot”
Claim · model-written summary
Splitting husks significantly increased ear rot in resistant hybrids in 1992.
- Taxon
- CornZea mays subsp. mayst0
- Material
- resistant hybridse0
- Treatment
- split huskse0
- Outcome
- disease severitye0
- Direction
- increasede0
- Qualifier
- In 1992e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1992, a year with naturally high levels of disease, split husks significantly increased disease severity among the resistant hybrids, but did not affect the susceptible hybrids.”
t0“Corn Hybrids to Fusarium Ear Rot”
Claim · model-written summary
Splitting husks did not affect ear rot in susceptible hybrids in 1992.
- Taxon
- CornZea mays subsp. mayst0
- Material
- susceptible hybridse0
- Treatment
- split huskse0
- Outcome
- disease severitye0
- Direction
- did not affecte0
- Qualifier
- In 1992e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1992, a year with naturally high levels of disease, split husks significantly increased disease severity among the resistant hybrids, but did not affect the susceptible hybrids.”
t0“Corn Hybrids to Fusarium Ear Rot”
Claim · model-written summary
Acephate reduced ear rot in hybrids with split husks.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Acephate applied to ears with split huskse0
- Outcome
- ear rote0
- Direction
- reducede0
- Qualifier
- all hybridse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acephate applied to ears with split husks reduced ear rot among all hybrids.”
t0“Corn Hybrids to Fusarium Ear Rot”
Claim · model-written summary
Split husks significantly reduced grain yield for all hybrids in 1990 and 1991.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- split huskse0
- Outcome
- Grain yieldse0
- Direction
- lesse0
- Qualifier
- all hybrids in 1990 and 1991e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yields were significantly less in ears with split husks for all hybrids in 1990 and 1991, and for the resistant hybrids in 1992.”
t0“Corn Hybrids”
Claim · model-written summary
Split husks significantly reduced grain yield in resistant hybrids in 1992.
- Taxon
- CornZea mays subsp. mayst0
- Material
- resistant hybridse0
- Treatment
- split huskse0
- Outcome
- Grain yieldse0
- Direction
- lesse0
- Qualifier
- in 1992e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yields were significantly less in ears with split husks for all hybrids in 1990 and 1991, and for the resistant hybrids in 1992.”
t0“Corn Hybrids”
Claim · model-written summary
Insecticide treatment raised grain yields for all hybrids in each year.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- insecticide-treatede0
- Outcome
- Grain yieldse0
- Direction
- highere0
- Qualifier
- all insecticide-treated hybrids each yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yields were higher for all insecticide-treated hybrids each year.”
t0“Corn Hybrids”
Claim · model-written summary
The authors infer that husk morphology and intra-ear thrips infestation both influence Fusarium ear rot susceptibility.
- Taxon
- CornZea mays subsp. mayst0
- Organ / stage
- huske0
- Outcome
- susceptibility to Fusarium ear rote0
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results demonstrate that susceptibility to Fusarium ear rot is influenced by both husk morphology and intra-ear thrips infestation.”
t0“Corn Hybrids”
The same questions in other papers
insecticide · yield · Zea mays (maize)Results differ
49 papers in the same direction as this paper · 16 in the opposite direction
- no effect
- no effect
- no effect
62 papers more in this group
See all 66 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.