Abstract
Bollworms management remains one of the major constraints to higher cotton productivity in Zimbabwe. Field trials to investigate the efficacy of Spinosad 48 SC on Diparopsis castanea (Hubner) and Herlicoverpa amigera (Hampson) were carried out for three seasons 2010/11 to 2013/14 at Cotton Research Institute, Kuwirirana, Umguza, and Chizvirizvi in Zimbabwe. A Randomised Complete Block Design with five treatments and four replications was used in this experiment. Three doses of Spinosad 48 SC 40ml/ha, 60ml/ha and 80ml/ha, were evaluated, along with Lambda cyhalothrin 5 EC at 200ml/ha as the standard treatment and the untreated control. Observations on bollworms eggs, larval counts and predator counts. The square root transformation of (x + 3/8) was used for data not following normal distribution. Data were analysed using Genstat 14th Edition. All the three doses of Spinosad 48 SC (40ml/ha, 60ml/ha and 80ml/ha) controlled Diparopsis castanea (Hubner) and Herlicoverpa amigera (Hampson) at CRI, Kuwirirana, Umguza and Chizvirizvi. The highest dose of Spinosad 48 SC of 80ml/ha resulted in the highest yield of seed cotton at CRI and Kuwirirana. All the three doses of Spinosad 48 SC killed predators in the same way as the standard insecticide. Spinosad 48 SC was recommended for registration on control of the two bollworms in Zimbabwe at 80ml/ha dose.
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Claims 4
Claim · model-written summary
All three doses of Spinosad 48 SC controlled Diparopsis castanea and Herlicoverpa amigera on cotton at the four sites.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- Spinosad 48 SCe1
- Interactor
- Diparopsis castaneae1pest
- Second interactor
- Herlicoverpa amigerae1pest
- Outcome
- controllede1
- Direction
- controllede1
- Setting
- CRI, Kuwirirana, Umguza and Chizvirizvie1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“major constraints to higher cotton productivity in Zimbabwe”
e1“All the three doses of Spinosad 48 SC (40ml/ha, 60ml/ha and 80ml/ha) controlled Diparopsis castanea (Hubner) and Herlicoverpa amigera (Hampson) at CRI, Kuwirirana, Umguza and Chizvirizvi”
Claim · model-written summary
The highest dose, 80ml/ha of Spinosad 48 SC, gave the highest seed cotton yield at CRI and Kuwirirana.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- 80ml/hae2
- Outcome
- yield of seed cottone2
- Direction
- higheste2
- Setting
- CRI and Kuwiriranae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The highest dose of Spinosad 48 SC of 80ml/ha resulted in the highest yield of seed cotton at CRI and Kuwirirana”
Claim · model-written summary
All three doses of Spinosad 48 SC killed predators in the same way as the standard insecticide.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Spinosad 48 SCe3
- Interactor
- predatorse3other
- Outcome
- predatorse3
- Direction
- killede3
- Comparator
- standard insecticidee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“major constraints to higher cotton productivity in Zimbabwe”
e3“All the three doses of Spinosad 48 SC killed predators in the same way as the standard insecticide”
Claim · model-written summary
Spinosad 48 SC was recommended for registration for control of the two bollworms in Zimbabwe at 80ml/ha.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Spinosad 48 SCe4
- Outcome
- control of the two bollwormse4
- Setting
- Zimbabwee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“major constraints to higher cotton productivity in Zimbabwe”
e4“Spinosad 48 SC was recommended for registration on control of the two bollworms in Zimbabwe at 80ml/ha dose”
The same questions in other papers
spinosad · ecology: diversity · Gossypium hirsutum (cotton)Positive and negative results
1 in the opposite direction
- positive
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.