Abstract
The dynamics of wheat aphid natural enemy community in different intercropping patterns (wheat-oilseed rape intercropping, wheat-garlic intercropping and monoculture) were investigated with biodiversity measures including species richness (S), dominance (D), Shannon's Index (H′), and evenness (E). It was showed that the species richness of natural enemies in wheat-oilseed rape intercropping pattern was almost higher than those of the other two patterns during the investigation period. However, the other two patterns were similar in the whole stage of investigation. The dominant species of natural enemies among the three planting patterns were different at the beginning of investigation, but in the mid-and late-stage were Aphidius avenae. During investigation, diversity index of natural enemies in wheat-oilseed rape intercropping pattern was the highest. After May 8, the dominance of A. avenae in wheat-oilseed rape intercropping pattern was the lowest with significant difference compared with the other two patterns, and the index of evenness was the highest. It is concluded that in wheat-oilseed rape intercropping pattern, with higher species richness and higher stability community of natural enemies, it could control wheat aphid infection especially in early wheat filling stage, and there was no obvious effect of wheat-garlic intercropping on community structure and dynamics of wheat aphid natural enemies.
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Claims 8
Claim · model-written summary
Species richness of wheat aphid natural enemies was almost higher in wheat-oilseed rape intercropping than in the other two patterns during the investigation.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- wheat-oilseed rape intercropping patterne1
- Interactor
- natural enemiese1biocontrol_agent
- Outcome
- species richness of natural enemiese1
- Direction
- highere1
- Comparator
- the other two patternse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the species richness of natural enemies in wheat-oilseed rape intercropping pattern was almost higher than those of the other two patterns”
Claim · model-written summary
The wheat-garlic intercropping and monoculture patterns were similar to each other in natural enemy richness across the investigation.
- Outcome
- similar in the whole stage of investigatione1
Not reportedTaxon
Verbatim
e1“the other two patterns were similar in the whole stage of investigation”
Claim · model-written summary
The diversity index of natural enemies was the highest in the wheat-oilseed rape intercropping pattern.
- Treatment
- wheat-oilseed rape intercropping patterne1
- Interactor
- natural enemiese1biocontrol_agent
- Outcome
- diversity index of natural enemiese1
- Direction
- higheste1
Not reportedTaxonComparator
Verbatim
e1“diversity index of natural enemies in wheat-oilseed rape intercropping pattern was the highest”
Claim · model-written summary
After May 8 the dominance of A. avenae was the lowest in wheat-oilseed rape intercropping, with a significant difference from the other two patterns.
- Treatment
- wheat-oilseed rape intercropping patterne1
- Interactor
- A. avenaeAphidius avenaee1biocontrol_agent
- Outcome
- dominance of A. avenaee1
- Direction
- loweste1
- Comparator
- the other two patternse1
Not reportedTaxon
Verbatim
e1“the dominance of A. avenae in wheat-oilseed rape intercropping pattern was the lowest with significant difference compared with the other two patterns”
Claim · model-written summary
After May 8 the evenness index of natural enemies was the highest in wheat-oilseed rape intercropping.
- Treatment
- wheat-oilseed rape intercropping patterne1
- Outcome
- index of evennesse1
- Direction
- higheste1
- Comparator
- the other two patternse1
Not reportedTaxon
Verbatim
e1“After May 8, the dominance of A. avenae in wheat-oilseed rape intercropping pattern was the lowest with significant difference compared with the other two patterns, and the index of evenness was the highest”
Claim · model-written summary
The dominant natural enemy species differed among the three planting patterns at the beginning, but was Aphidius avenae in the mid and late stages.
- Interactor
- Aphidius avenaeAphidius avenaee1biocontrol_agent
- Outcome
- dominant species of natural enemiese1
Not reportedTaxon
Verbatim
e1“The dominant species of natural enemies among the three planting patterns were different at the beginning of investigation, but in the mid-and late-stage were Aphidius avenae”
Claim · model-written summary
The authors conclude that wheat-oilseed rape intercropping, with higher natural enemy richness and community stability, could control wheat aphid infection especially in the early wheat filling stage.
- Taxon
- wheatTriticum aestivume1
- Treatment
- wheat-oilseed rape intercropping patterne1
- Interactor
- wheat aphide1pest
- Second interactor
- natural enemiese1biocontrol_agent
- Outcome
- control wheat aphid infectione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“in wheat-oilseed rape intercropping pattern, with higher species richness and higher stability community of natural enemies, it could control wheat aphid infection especially in early wheat filling stage”
Claim · model-written summary
Wheat-garlic intercropping had no obvious effect on the community structure and dynamics of wheat aphid natural enemies.
- Taxon
- wheatTriticum aestivume1
- Treatment
- wheat-garlic intercroppinge1
- Interactor
- natural enemiese1biocontrol_agent
- Outcome
- community structure and dynamics of wheat aphid natural enemiese1
- Direction
- no obvious effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“there was no obvious effect of wheat-garlic intercropping on community structure and dynamics of wheat aphid natural enemies”
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See all 8 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.