Abstract
Many farms in regions of intensive crop production lack the habitats that historically provided resources to beneficial insects, and this lack has compromised the ability of farmers to rely on natural enemies for pest control. One of the strategies to boost populations of existing or naturally occurring beneficial insects is to supply them with appropriate habitat and alternative food sources, such as diversifying trap crop systems and plant populations in or around fields include perennials and flowering plants. Trap cropping using insectary plant that attracts beneficial insects as natural enemies, especially flowering plants, made for provision of habitat for predators or parasitoids that are useful for biological control. Perimeter trap cropping (PTC) is a method of integrated pest management in which the main crop is surrounded with a perimeter trap crop that is more attractive to pests. We observed PTC habitat modification and conventionaly-managed tobacco farms in Purwosari Village, Pasuruan (East Java) to evaluate the effectiveness of habitat modification management prescription (perimeter trap crop using flowering plant Crotalaria juncea) on agroecosystem natural enemies. Field tests were conducted in natural enemies (predator and parasitoid) abundance dynamic and diversity on tobacco field in Purwoasri, Pasuruan. Yellow pan trap, sweep net and hand collecting methods were applied in each 10 days during tobacco growth stage (vegetative, generative until reproductive/harvesting. The results showed that application perimeter trap crop with C. juncea in tobacco fields able to help arthropod conservation of natural enemies on all tobacco growth stages. These results were evidenced the increase in abundance of predators and parasitoids and the increased value of the Diversity Index (H’) and Evenness Index (EH) in all tobacco growth phases. Composition of predator and parasitoid in the habitat modification field were more diverse than in the conventional field. Three specific predator species were found on habitat modification field, i.e.: Crocothemis servilia, Orthetrum sabina and Paratrechina sp., as well as specific parasitoid species, i.e.: Polistes sp. (vegetative stage), Chloromyia sp., Theronia sp., Sarcophaga sp. and Cletus sp (generative stage), Condylodtylus sp., Trichogramma sp. (reproductive stage). Trends in predator abundance toward parasitoid insects were indicated a positive linear trend, with the abundance of predator on habitat modification field has an influence on the level of 67.1% parasitoid.
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Claims 5
Claim · model-written summary
Perimeter trap cropping with C. juncea increased predator and parasitoid abundance in tobacco fields.
- Taxon
- tobacco
Nicotiana tabacume0 - Organ / stage
- all tobacco growth stagese0
- Treatment
- perimeter trap crop with C. junceae0
- Outcome
- abundance of predators and parasitoidse1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application perimeter trap crop with C. juncea in tobacco fields able to help arthropod conservation of natural enemies on all tobacco growth stages”
e1“increase in abundance of predators and parasitoids”
Claim · model-written summary
The diversity and evenness indices increased in modified tobacco fields across growth phases.
- Taxon
- tobaccoNicotiana tabacume0
- Organ / stage
- all tobacco growth phasese1
- Treatment
- habitat modification fielde2
- Outcome
- Diversity Index (H’) and Evenness Index (EH)e1
- Direction
- increasede1
- Comparator
- conventional fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tobacco fields”
e1“increased value of the Diversity Index (H’) and Evenness Index (EH) in all tobacco growth phases”
e2“habitat modification field were more diverse than in the conventional field”
Claim · model-written summary
Predator and parasitoid composition was more diverse in modified tobacco fields than conventional fields.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- habitat modification fielde1
- Outcome
- Composition of predator and parasitoide1
- Direction
- more diversee1
- Comparator
- conventional fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on tobacco field in Purwoasri”
e1“Composition of predator and parasitoid in the habitat modification field were more diverse than in the conventional field”
Claim · model-written summary
Several predator and parasitoid species occurred specifically in habitat modification fields at different tobacco growth stages.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- specific predator species were found on habitat modification fielde1
- Qualifier
- specific parasitoid speciese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during tobacco growth stage (vegetative”
e1“Three specific predator species were found on habitat modification field, i.e.: Crocothemis servilia, Orthetrum sabina and Paratrechina sp., as well as specific parasitoid species, i.e.: Polistes sp. (vegetative stage), Chloromyia sp., Theronia sp., Sarcophaga sp. and Cletus sp (generative stage), Condylodtylus sp., Trichogramma sp. (reproductive stage)”
Claim · model-written summary
Predator abundance showed a positive linear association with parasitoid abundance in modified tobacco fields, with a reported 67.1% influence.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- parasitoide1
- Direction
- positive linear trende1
- Value
- 67.1%e1
- Qualifier
- abundance of predator on habitat modification fielde1
- Setting
- habitat modification fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on tobacco field in Purwoasri”
e1“Trends in predator abundance toward parasitoid insects were indicated a positive linear trend, with the abundance of predator on habitat modification field has an influence on the level of 67.1% parasitoid”
The same questions in other papers
trap barrier · pest · Nicotiana tabacum (tobacco)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- 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.