Abstract
An experiment was conducted on two wheat varieties, Inqilab-91 and Saleem 2000, at Malakandher Research Farm, NWFP Agricultural University Peshawar during 2004-05 to compare the effectiveness of a biopesticide (BtA @ 1g lit -1 ) with different synthetic pesticides (chlorpyriphos @ 5ml, trend @ 4ml and megamos @ 1.25ml lit -1 ) against wheat aphids. Three aphid species namely Rhopalosiphum padi , Schizaphis graminum and Sitobion fragariae were collected from the host and identified in the Entomology Department of NWFP Agricultural University Peshawar. Aphid density on Saleem-2000 was significantly lower in chlorpyriphos treatment with 0.67, 0.76, 2.16 and 8.55 aphids leaf -1 while significantly higher in the trend treatment with 1.87, 2.17, 3.60 and 11.55 aphids leaf -1 after 1, 2, 3, and 7 days of chemical treatment, respectively. Mean aphids density leaf -1 over the entire two weeks period was significantly lower in chlorpyriphos and higher in trend treatments. Mean aphid density in control during this period increased from 21.3 to 31.2 leaf -1 (9.2 to 38.2%). Aphid density on Inqilab-91 was significantly lower in chlorpyriphos treatment with 1.31, 2.66, 1.75 and 3.89 aphids leaf -1 while higher in trend with 3.33, 2.10, 3.90 and 6.36 aphids leaf -1 after 1, 2, 3, and 7 days of chemical treatment. Mean aphid density leaf -1 over entire two weeks was significantly lower in chlorpyriphos and higher in trend treatment. Mean aphid density in control during this period increased from 26.2 to 36.4 leaf -1 (33.8 to 52.3%). Mean yield (kg ac -1 ) of Saleem-2000 was significantly higher in chlorpyriphos (734), megamos (716) and BtA (713) while lower in trend (676) as well as control (675). On the other hand, mean yield (kg ac -1 ) of Inqilab-91 was significantly higher in chlorpyriphos (644), megamos (622) and BtA (616) while lower in trend (615) and control (585 kg).
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Claims 15
Claim · model-written summary
Three aphid species were identified on wheat.
- Taxon
- wheat
Triticum aestivumt0 - Interactor
- Rhopalosiphum padi
_Figure_1_a.jpg?width=60)
Rhopalosiphum padie0pest - Outcome
- Rhopalosiphum padi , Schizaphis graminum and Sitobion fragariaee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_1_a.jpg?width=500)
Verbatim
e0“Three aphid species namely Rhopalosiphum padi , Schizaphis graminum and Sitobion fragariae were collected from the host and identified”
t0“WHEAT”
Claim · model-written summary
On Saleem-2000, chlorpyriphos gave significantly lower aphid density than the other treatments.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- chlorpyriphos treatmente0
- Outcome
- Aphid densitye0
- Direction
- lowere0
- Value
- 0.67, 0.76, 2.16 and 8.55 aphids leaf -1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aphid density on Saleem-2000 was significantly lower in chlorpyriphos treatment with 0.67, 0.76, 2.16 and 8.55 aphids leaf -1”
t0“WHEAT”
e1“Aphid density on Saleem-2000”
Claim · model-written summary
On Saleem-2000, trend gave significantly higher aphid density.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- trend treatmente0
- Outcome
- aphids leaf -1e0
- Direction
- highere0
- Value
- 1.87, 2.17, 3.60 and 11.55 aphids leaf -1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly higher in the trend treatment with 1.87, 2.17, 3.60 and 11.55 aphids leaf -1”
t0“WHEAT”
e1“Aphid density on Saleem-2000”
Claim · model-written summary
Control aphid density on Saleem-2000 increased from 21.3 to 31.2 per leaf.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Mean aphid densitye0
- Direction
- increasede0
- Value
- 21.3 to 31.2 leaf -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean aphid density in control during this period increased from 21.3 to 31.2 leaf -1 (9.2 to 38.2%).”
t0“WHEAT”
e1“Aphid density on Saleem-2000”
Claim · model-written summary
On Inqilab-91, chlorpyriphos gave lower aphid density.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- chlorpyriphos treatmente0
- Outcome
- Aphid densitye0
- Direction
- lowere0
- Value
- 1.31, 2.66, 1.75 and 3.89 aphids leaf -1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aphid density on Inqilab-91 was significantly lower in chlorpyriphos treatment with 1.31, 2.66, 1.75 and 3.89 aphids leaf -1”
t0“WHEAT”
e1“Aphid density on Inqilab-91”
Claim · model-written summary
On Inqilab-91, trend gave higher aphid density.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- trende0
- Outcome
- aphids leaf -1e0
- Direction
- highere0
- Value
- 3.33, 2.10, 3.90 and 6.36 aphids leaf -1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher in trend with 3.33, 2.10, 3.90 and 6.36 aphids leaf -1”
t0“WHEAT”
e1“Aphid density on Inqilab-91”
Claim · model-written summary
Control aphid density on Inqilab-91 increased from 26.2 to 36.4 per leaf.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Mean aphid densitye0
- Direction
- increasede0
- Value
- 26.2 to 36.4 leaf -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean aphid density in control during this period increased from 26.2 to 36.4 leaf -1 (33.8 to 52.3%).”
t0“WHEAT”
e1“Aphid density on Inqilab-91”
Claim · model-written summary
Saleem-2000 yielded 734 kg per acre with chlorpyriphos.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean yield (kg ac -1 ) of Saleem-2000 was significantly higher in chlorpyriphos (734)”
t0“WHEAT”
e1“Aphid density on Saleem-2000”
Claim · model-written summary
Saleem-2000 yielded 716 kg per acre with megamos.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean yield (kg ac -1 ) of Saleem-2000 was significantly higher in chlorpyriphos (734), megamos (716)”
t0“WHEAT”
e1“Aphid density on Saleem-2000”
Claim · model-written summary
Saleem-2000 yielded 713 kg per acre with BtA.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean yield (kg ac -1 ) of Saleem-2000 was significantly higher in chlorpyriphos (734), megamos (716) and BtA (713)”
t0“WHEAT”
e1“Aphid density on Saleem-2000”
Claim · model-written summary
Saleem-2000 yield was lower with trend at 676 kg per acre.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- trende0
- Outcome
- yielde0
- Direction
- lowere0
- Value
- 676e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean yield (kg ac -1 ) of Saleem-2000 was significantly higher in chlorpyriphos (734), megamos (716) and BtA (713) while lower in trend (676) as well as control (675).”
t0“WHEAT”
e1“Aphid density on Saleem-2000”
Claim · model-written summary
Inqilab-91 yielded 644 kg per acre with chlorpyriphos.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean yield (kg ac -1 ) of Inqilab-91 was significantly higher in chlorpyriphos (644)”
t0“WHEAT”
e1“Aphid density on Inqilab-91”
Claim · model-written summary
Inqilab-91 yielded 622 kg per acre with megamos.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean yield (kg ac -1 ) of Inqilab-91 was significantly higher in chlorpyriphos (644), megamos (622)”
t0“WHEAT”
e1“Aphid density on Inqilab-91”
Claim · model-written summary
Inqilab-91 yielded 616 kg per acre with BtA.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean yield (kg ac -1 ) of Inqilab-91 was significantly higher in chlorpyriphos (644), megamos (622) and BtA (616)”
t0“WHEAT”
e1“Aphid density on Inqilab-91”
Claim · model-written summary
Inqilab-91 yielded 615 kg per acre with trend, versus 585 kg in control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- trende0
- Outcome
- yielde0
- Direction
- lowere0
- Value
- 615e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean yield (kg ac -1 ) of Inqilab-91 was significantly higher in chlorpyriphos (644), megamos (622) and BtA (616) while lower in trend (615) and control (585 kg).”
t0“WHEAT”
e1“Aphid density on Inqilab-91”
The same questions in other papers
chlorpyrifos · pest · Triticum aestivum (wheat)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
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chlorpyrifos · yield · Triticum aestivum (wheat)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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3 papers more in this group
See all 7 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.