Abstract
Yield losses of spring barley, Hordeum vulgare L., caused by feeding of the cereal leaf beetle (CLB), Oulema melanopus (L.), were determined by comparing yields of insecticide‐treated plots with CLB‐infested plots. The CLB caused substantial grain losses in three field tests in Michigan in 1974 and 1975. The average yield loss of seven susceptible barley cultivars in the three tests was 38% due to an estimated peak density of 1.6 larvae/stem. A CLB‐resistarit line from the USDA World Small Grain Collection, CI 6469, and USDA‐SEA No. 70222 with CI 6469 and CI 6671 in its parentage, produced high yields in beetle‐infested plots. In general, fewer CLB eggs and larvae were found on the resistant barleys than on the susceptible cultivars. It appears possible to use plant resistance in spring barley to reduce yield losses caused by the CLB.
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Claims 4
Claim · model-written summary
Cereal leaf beetle feeding caused substantial grain losses in Michigan field tests, with an average yield loss of 38% in susceptible cultivars
- Taxon
- spring barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- feedinge0
- Interactor
- cereal leaf beetlee0pest
- Outcome
- yield losse2
- Direction
- decreaseinferrede0
- Value
- 38%e2
- Qualifier
- peak density of 1.6 larvae/steme2
- Comparator
- insecticide‐treated plotse0
- Setting
- Michigane1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Yield losses of spring barley, Hordeum vulgare L., caused by feeding of the cereal leaf beetle (CLB), Oulema melanopus (L.), were determined by comparing yields of insecticide‐treated plots with CLB‐infested plots”
e1“The CLB caused substantial grain losses in three field tests in Michigan in 1974 and 1975”
e2“The average yield loss of seven susceptible barley cultivars in the three tests was 38% due to an estimated peak density of 1.6 larvae/stem”
Claim · model-written summary
Resistant spring barley line CI 6469 produced high yields in cereal leaf beetle-infested plots
- Taxon
- spring barleyHordeum vulgaree1
- Material
- CI 6469e0
- Interactor
- beetlee0pest
- Outcome
- yieldse0
- Qualifier
- USDA‐SEA No. 70222e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A CLB‐resistarit line from the USDA World Small Grain Collection, CI 6469, and USDA‐SEA No. 70222 with CI 6469 and CI 6671 in its parentage, produced high yields in beetle‐infested plots”
e1“Yield losses of spring barley, Hordeum vulgare L., caused by feeding of the cereal leaf beetle (CLB), Oulema melanopus (L.), were determined by comparing yields of insecticide‐treated plots with CLB‐infested plots”
Claim · model-written summary
Fewer cereal leaf beetle eggs and larvae were found on resistant spring barleys than on susceptible cultivars
- Taxon
- spring barleyHordeum vulgaree1
- Material
- resistant barleyse0
- Interactor
- CLBe0pest
- Outcome
- CLB eggs and larvaee0
- Direction
- fewere0
- Comparator
- susceptible cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, fewer CLB eggs and larvae were found on the resistant barleys than on the susceptible cultivars”
e1“Yield losses of spring barley, Hordeum vulgare L., caused by feeding of the cereal leaf beetle (CLB), Oulema melanopus (L.), were determined by comparing yields of insecticide‐treated plots with CLB‐infested plots”
Claim · model-written summary
Plant resistance in spring barley may reduce yield losses caused by cereal leaf beetle
- Taxon
- spring barleyHordeum vulgaree0
- Interactor
- CLBe0pest
- Outcome
- reduce yield lossese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It appears possible to use plant resistance in spring barley to reduce yield losses caused by the CLB”
The same questions in other papers
infection · yield · Hordeum vulgare (barley)Positive and negative results
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- positive
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See all 22 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.