Abstract
ABSTRACT Field studies were conducted to determine the effect of insecticide spray applications, sowing dates and cultivar resistance in diverse cowpea genotypes in the Delmarva (Delaware, Maryland and Virginia) peninsula region of the United States. A mixture of cypermethrin and dimethoate was applied in the first experiment and the number of spray applications ranged from two to six. The second experiment had two sowing date treatments and received four spray applications of endosulfan. Also, ten genotypes of cowpea were planted and observations were taken on the incidence of major insect pests and pod damage. There was a 30% increase in cowpea seed yield as a result of spraying the mixture of cypermethrin + dimethoate insecticides. The damage to cowpea pods was also significantly reduced in the sprayed treatments. The first and second sowing dates of cowpea sprayed treatments gave 30% and 45% increase in the seed yield over the first and second unsprayed dates of sowing cowpea treatments, respectively. The first sowing date treatment gave significantly higher seed yield than the second sowing date treatments. There were significant differences in the number of some major insect pests and also on pod damage among the ten diverse cowpea genotypes grown under the Delmarva field conditions. This study provides information on the incidence of insect pests of cowpea in the Delmarva region, the potential of insect pests to cause significant yield losses, and variation in insect pest resistance among ten diverse cowpea genotypes.
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Claims 7
Claim · model-written summary
Cypermethrin plus dimethoate spraying increased cowpea seed yield by 30%.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- spraying the mixture of cypermethrin + dimethoate insecticidese0
- Outcome
- seed yielde0
- Direction
- increasee0
- Value
- 30%e0
- Setting
- Delmarvat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a 30% increase in cowpea seed yield as a result of spraying the mixture of cypermethrin + dimethoate insecticides”
t0“Cowpea in the Delmarva Region”
Claim · model-written summary
Spraying significantly reduced cowpea pod damage.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- sprayed treatmentse0
- Outcome
- damage to cowpea podse0
- Direction
- reducede0
- Setting
- Delmarvat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The damage to cowpea pods was also significantly reduced in the sprayed treatments”
t0“Cowpea in the Delmarva Region”
Claim · model-written summary
Spraying at the first sowing date increased cowpea seed yield by 30% over the unsprayed first date.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- firste0
- Outcome
- seed yielde0
- Direction
- increasee0
- Value
- 30%e0
- Comparator
- first and second unsprayed dates of sowing cowpea treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The first and second sowing dates of cowpea sprayed treatments gave 30% and 45% increase in the seed yield over the first and second unsprayed dates of sowing cowpea treatments, respectively”
Claim · model-written summary
Spraying at the second sowing date increased cowpea seed yield by 45% over the unsprayed second date.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- second sowing dates of cowpea sprayed treatmentse0
- Outcome
- seed yielde0
- Direction
- increasee0
- Value
- 45%e0
- Comparator
- first and second unsprayed dates of sowing cowpea treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The first and second sowing dates of cowpea sprayed treatments gave 30% and 45% increase in the seed yield over the first and second unsprayed dates of sowing cowpea treatments, respectively”
Claim · model-written summary
First sowing gave significantly higher seed yield than second sowing.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- first sowing date treatmente0
- Outcome
- seed yielde0
- Direction
- highere0
- Comparator
- second sowing date treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The first sowing date treatment gave significantly higher seed yield than the second sowing date treatments”
t0“Cowpea in the Delmarva Region”
Claim · model-written summary
Numbers of some major insect pests differed significantly among ten cowpea genotypes.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- ten diverse cowpea genotypese0
- Outcome
- number of some major insect pestse0
- Setting
- Delmarva field conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant differences in the number of some major insect pests and also on pod damage among the ten diverse cowpea genotypes grown under the Delmarva field conditions”
Claim · model-written summary
Pod damage differed significantly among ten cowpea genotypes.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- ten diverse cowpea genotypese0
- Outcome
- pod damagee0
- Setting
- Delmarva field conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant differences in the number of some major insect pests and also on pod damage among the ten diverse cowpea genotypes grown under the Delmarva field conditions”
The same questions in other papers
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111 papers in the same direction as this paper · 12 in the opposite direction · 2 reporting no difference from an alternative
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See all 126 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.