Abstract
In this study, low-cost pest exclusion nets (lcPENs) were evaluated to determine their efficacy in reducing pest infestation and enhancing yields of cabbage at KALRO Kabete and PTC (Practical Training Centre) Thika, Kenya, from March to September 2011 both at nursery and field production levels. Nets of two-mesh sizes (0.9 mm and 0.4 mm) were used whereby the 0.9 mm net was either impregnated or not impregnated with alpha cypermethrin to enhance efficacy through repellency effects of the pesticides. The lcPENs efficiency was compared with no-net use and grass shading (farmer practice) in a completely randomized block design with five replications. Results showed that diamondback moth (Plutella xylostella) larval infestation was lower (P<0.05) on cabbages covered with lcPENs both at nursery and field level. At nursery, aphids were lower (P<0.05) on seedlings covered with insecticide-impregnated lcPEN but in field conditions, there was no difference among the lcPENs. Cabbage yield was higher (P<0.05) on cabbages grown under lcPENs. The findings clearly demonstrate high incomes as a result of growing cabbages under lcPENs. However, there was no evidence of an increased role for insecticide impregnation except in the nets at nursery level. Hence farmers can use ordinary (un-impregnated) lcPENs for pest management in transplanted cabbage production.
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Claims 7
Claim · model-written summary
Nets lowered diamondback moth larval infestation at nursery and field levels.
- Taxon
- cabbages
Brassica oleracea var. capitatae0 - Treatment
- lcPENse0
- Interactor
- Plutella xylostella
Plutella xylostellae0pest - Outcome
- diamondback moth (Plutella xylostella) larval infestatione0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“diamondback moth (Plutella xylostella) larval infestation was lower (P<0.05) on cabbages covered with lcPENs both at nursery and field level”
Claim · model-written summary
Insecticide impregnated netting lowered aphids on nursery seedlings.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- insecticide-impregnated lcPENe0
- Interactor
- aphidsAphidomorphae0pest
- Outcome
- aphidse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At nursery, aphids were lower (P<0.05) on seedlings covered with insecticide-impregnated lcPEN”
t0“cabbage”
Claim · model-written summary
Field aphid infestation did not differ among net types.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- lcPENse0
- Interactor
- aphidsAphidomorphae1pest
- Outcome
- aphidse1
- Direction
- no differencee0
- Comparator
- lcPENse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in field conditions, there was no difference among the lcPENs”
e1“aphids were lower (P<0.05) on seedlings”
t0“cabbage”
Claim · model-written summary
Cabbage yield was higher under nets.
- Taxon
- cabbagesBrassica oleracea var. capitatae0
- Treatment
- lcPENse0
- Outcome
- Cabbage yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cabbage yield was higher (P<0.05) on cabbages grown under lcPENs”
Claim · model-written summary
Growing cabbage under nets yielded high incomes.
- Taxon
- cabbagesBrassica oleracea var. capitatae0
- Treatment
- lcPENse0
- Outcome
- high incomese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high incomes as a result of growing cabbages under lcPENs”
Claim · model-written summary
Insecticide impregnation showed no added role except in nursery nets.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- insecticide impregnatione0
- Outcome
- increased rolee0
- Direction
- no evidence of an increasede0
- Qualifier
- except in the nets at nursery levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no evidence of an increased role for insecticide impregnation except in the nets at nursery level”
t0“cabbage”
Claim · model-written summary
The authors recommend unimpregnated nets for transplanted cabbage pest management.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Outcome
- ordinary (un-impregnated) lcPENs for pest managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“farmers can use ordinary (un-impregnated) lcPENs for pest management in transplanted cabbage production”
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trap barrier · Plutella xylostella · Brassica oleracea (wild cabbage)Positive and negative results
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See all 7 papers →trap barrier · yield · Brassica oleracea (wild cabbage)Positive and negative results
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See all 17 papers →trap barrier · Aphidomorpha · Brassica oleracea (wild cabbage)Results agree
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insecticide · Aphidomorpha · Brassica oleracea (wild cabbage)Results agree
2 papers in the same direction as this paper
- positive
- 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.