Abstract
Summary. Crop borders of soybean (Glycine max) , sorghum (Sorghum bicolor) , winter wheat (Triticum aestivum) and potato (Solanum tuberosum) were tested as a means of reducing potato virus Y (PVY) incidence in seed potato. Borders of fallow cultivated ground served as controls. Aphid landing rates were monitored weekly in plots using green tile traps, and PVY incidence was assessed by serologically testing tuber progeny from selected rows in each plot. Average weekly aphid landing rates in fallow‐bordered and crop‐bordered plots were not significantly different in 1992 (29.4 and 25.2 aphids, respectively) or 1993 (7.3 and 6.6 aphids, respectively). However, crop borders significantly reduced PVY incidence. In 1992, fallow‐bordered and soybean‐bordered plots averaged 47.8% and 35.0% PVY infection, respectively. In 1993, PVY infection averaged across all crop (soybean, sorghum, and wheat) bordered plots was 2.7% compared to 6.8% in fallow‐bordered plots. PVY incidence in the centre rows of fallow‐bordered and crop‐bordered plots was statistically equivalent, while outer rows of crop‐bordered plots had significantly less PVY than outer rows of fallow‐bordered plots. Crop borders apparently reduced the number of viruliferous aphids landing on the edge of the plot. The choice of crop species used as a border, or treating the border with a systemic insecticide, did not affect aphid landing rates or PVY incidence. In 1995, PVY incidence in the centre 10 row block of potatoes averaged 2.1% across all crop borders (potato and soybean). PVY infection in the four row potato border averaged 5.7%. Crop borders are readily adaptable to current production practices, although the greatest benefits in reducing PVY incidence would occur in average sized, generation 0 (< 0.2 ha), elite seed potato fields.
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Claims 12
Claim · model-written summary
Crop borders did not significantly alter weekly aphid landing rates in 1992.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- crop‐bordered plotse0
- Interactor
- aphide0pest
- Outcome
- aphid landing ratese0
- Direction
- not significantly differente0
- Value
- 25.2 aphidse0
- Qualifier
- 29.4e0
- Comparator
- fallow‐borderede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average weekly aphid landing rates in fallow‐bordered and crop‐bordered plots were not significantly different in 1992 (29.4 and 25.2 aphids, respectively)”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
Crop borders did not significantly alter weekly aphid landing rates in 1993.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- crop borderst0
- Interactor
- aphidsAphidomorphae0pest
- Outcome
- aphidse0
- Value
- 6.6 aphidse0
- Qualifier
- 7.3e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“or 1993 (7.3 and 6.6 aphids, respectively).”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
Soybean borders reduced PVY infection to 35.0% versus 47.8% for fallow borders in 1992.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- soybean‐bordered plotse0
- Interactor
- PVY
Potato virus Ye0pathogen - Outcome
- PVY infectione0
- Direction
- lowerinferrede0
- Value
- 35.0%e0
- Qualifier
- 47.8%e0
- Comparator
- fallow‐borderede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1992, fallow‐bordered and soybean‐bordered plots averaged 47.8% and 35.0% PVY infection, respectively.”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
Crop borders reduced PVY infection to 2.7% versus 6.8% with fallow borders in 1993.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- crop (soybean, sorghum, and wheat) bordered plotse0
- Interactor
- PVYPotato virus Ye0pathogen
- Outcome
- PVY infectione0
- Direction
- lowerinferrede0
- Value
- 2.7%e0
- Qualifier
- 6.8%e0
- Comparator
- fallow‐bordered plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1993, PVY infection averaged across all crop (soybean, sorghum, and wheat) bordered plots was 2.7% compared to 6.8% in fallow‐bordered plots.”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
PVY incidence in centre rows was statistically equivalent under crop and fallow borders.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- crop‐borderede0
- Interactor
- PVYPotato virus Ye0pathogen
- Outcome
- PVY incidencee0
- Direction
- statistically equivalente0
- Comparator
- fallow‐borderede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PVY incidence in the centre rows of fallow‐bordered and crop‐bordered plots was statistically equivalent”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
Outer rows with crop borders had significantly less PVY than outer rows with fallow borders.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- crop‐bordered plotse0
- Interactor
- PVYPotato virus Ye0pathogen
- Outcome
- PVYe0
- Direction
- lesse0
- Comparator
- fallow‐bordered plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“outer rows of crop‐bordered plots had significantly less PVY than outer rows of fallow‐bordered plots.”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
Crop borders apparently reduced viruliferous aphid landings at plot edges.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Crop borderse0
- Interactor
- aphidsAphidomorphae0pest
- Outcome
- number of viruliferous aphids landinge0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crop borders apparently reduced the number of viruliferous aphids landing on the edge of the plot.”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
Border crop species did not affect aphid landings or PVY incidence.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- choice of crop species used as a bordere0
- Interactor
- aphide0pest
- Outcome
- aphid landing rates or PVY incidencee0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The choice of crop species used as a border, or treating the border with a systemic insecticide, did not affect aphid landing rates or PVY incidence.”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
Systemic insecticide on borders did not affect aphid landings or PVY incidence.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- treating the border with a systemic insecticidee0
- Interactor
- aphide0pest
- Outcome
- aphid landing rates or PVY incidencee0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The choice of crop species used as a border, or treating the border with a systemic insecticide, did not affect aphid landing rates or PVY incidence.”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
PVY incidence averaged 2.1% in centre potato rows across 1995 crop borders.
- Taxon
- potatoesSolanum tuberosume0
- Interactor
- PVYPotato virus Ye0pathogen
- Outcome
- PVY incidencee0
- Value
- 2.1%e0
- Qualifier
- centre 10 row blocke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1995, PVY incidence in the centre 10 row block of potatoes averaged 2.1% across all crop borders (potato and soybean).”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
PVY infection averaged 5.7% in the four-row potato border.
- Taxon
- potatoSolanum tuberosume0
- Interactor
- PVYPotato virus Ye0pathogen
- Outcome
- PVY infectione0
- Value
- 5.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PVY infection in the four row potato border averaged 5.7%.”
t0“Crop borders reduce potato virus Y incidence in seed potato”
Claim · model-written summary
The authors judged crop borders adaptable to production and most beneficial in elite generation 0 seed potato fields.
- Taxon
- potatoSolanum tuberosume0
- Interactor
- PVYPotato virus Ye0pathogen
- Outcome
- Crop borders are readily adaptable to current production practicese0
- Qualifier
- generation 0 (< 0.2 ha), elite seed potato fieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crop borders are readily adaptable to current production practices, although the greatest benefits in reducing PVY incidence would occur in average sized, generation 0 (< 0.2 ha), elite seed potato fields.”
t0“Crop borders reduce potato virus Y incidence in seed potato”
The same questions in other papers
insecticide · disease · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.