Abstract
BACKGROUND: Pentastiridius leporinus (Hemiptera: Cixiidae) is the most important vector of syndrome 'basses richesses' (SBR), a new disease that leads to severe economic losses in sugar beet. In this study, different soil tillage methods (ploughing and cultivator) and crops (winter wheat, spring wheat, maize and bare soil) following SBR-infested sugar beet were tested as potential management options in field trials. In the laboratory, the survival and development of first and third instar nymphs on wheat and maize was studied to further assess their suitability as host plants. RESULTS: In five out of seven field sites, reduced soil tillage had no effect on adult planthopper emergence compared to ploughing. In two sites, reduced tillage resulted in higher emergence rates. In nearly all field sites, up to 98.9% fewer emerging adults were detected in bare soil and maize, when compared to winter wheat. Under laboratory conditions, the lowest survival rate was found in first instar nymphs feeding on maize seedlings (4.2%), while 66.7% survived on wheat, over a period of 300 days. In contrast, 73.3% and 70% of third instar nymphs survived on wheat and maize over a period of 150 days. CONCLUSION: Soil tillage had little effect against Pentastiridius leporinus. Maize is a poor host for first instars but a suitable resource for third instar nymphs, the stage which encounters maize under field conditions. Hence, reductions in planthopper emergence in the field were likely caused by starvation due to the long host-free period between sugar beet harvest and the sowing of maize. © 2024 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Claims 9
Claim · model-written summary
In five of seven field sites, reduced soil tillage had no effect on adult planthopper emergence compared with ploughing.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Treatment
- reduced soil tillagee0
- Interactor
- planthoppere0pest
- Outcome
- adult planthopper emergencee0
- Direction
- no effecte0
- Comparator
- ploughinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In five out of seven field sites, reduced soil tillage had no effect on adult planthopper emergence compared to ploughing”
t0“sugar beet”
Claim · model-written summary
In two field sites, reduced tillage resulted in higher emergence rates of the planthopper.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- reduced tillagee0
- Outcome
- emergence ratese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In two sites, reduced tillage resulted in higher emergence rates”
t0“sugar beet”
Claim · model-written summary
Up to 98.9% fewer adults emerged in bare soil than in winter wheat in nearly all field sites.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- bare soile0
- Outcome
- emerging adultse0
- Direction
- fewere0
- Value
- 98.9%e0
- Comparator
- winter wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“up to 98.9% fewer emerging adults were detected in bare soil and maize, when compared to winter wheat”
t0“sugar beet”
Claim · model-written summary
Up to 98.9% fewer adults emerged in maize than in winter wheat in nearly all field sites.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- maizee0
- Outcome
- emerging adultse0
- Direction
- fewere0
- Value
- 98.9%e0
- Comparator
- winter wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“up to 98.9% fewer emerging adults were detected in bare soil and maize, when compared to winter wheat”
t0“sugar beet”
Claim · model-written summary
Under laboratory conditions, survival of first instar nymphs feeding on maize seedlings was lowest, at 4.2%.
- Interactor
- first instar nymphse0pest
- Outcome
- lowest survival ratee0
- Value
- 4.2%e0
- Setting
- laboratory conditionse0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under laboratory conditions, the lowest survival rate was found in first instar nymphs feeding on maize seedlings (4.2%)”
Claim · model-written summary
Of the first instar nymphs, 66.7% survived on wheat over 300 days.
- Taxon
- wheat
Triticum aestivume0 - Outcome
- survivede0
- Value
- 66.7%e0
- Qualifier
- over a period of 300 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“66.7% survived on wheat, over a period of 300 days”
Claim · model-written summary
Of the third instar nymphs, 73.3% survived on wheat over 150 days.
- Taxon
- wheatTriticum aestivume0
- Interactor
- third instar nymphse0pest
- Outcome
- third instar nymphs survivede0
- Value
- 73.3%e0
- Qualifier
- over a period of 150 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“73.3% and 70% of third instar nymphs survived on wheat and maize over a period of 150 days”
Claim · model-written summary
Of the third instar nymphs, 70% survived on maize over 150 days.
- Interactor
- third instar nymphse0pest
- Outcome
- third instar nymphs survivede0
- Value
- 70%e0
- Qualifier
- over a period of 150 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“73.3% and 70% of third instar nymphs survived on wheat and maize over a period of 150 days”
Claim · model-written summary
The authors conclude that reductions in planthopper emergence in the field were likely caused by starvation due to the long host-free period between sugar beet harvest and maize sowing.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Outcome
- reductions in planthopper emergencee0
- Qualifier
- starvation due to the long host-free periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reductions in planthopper emergence in the field were likely caused by starvation due to the long host-free period between sugar beet harvest and the sowing of maize”
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