Abstract
Field experiments were carried out at Al-Quaren village, Sharkia governorate during seasons 2016 and 2017 to evaluate the efficiency of three synthetic insecticides belonging to two groups, synthetic pyrethroid (lambda-cyhalothrin) and neonicotinoids (thiamethoxam and acetampride) towards the tomato whitefly, Bemisia tabaci on tomato crop. As for, estimation of certain pigments content of fresh tomato leaves (chlorophyll a, chlorophyll b and carotenoids) had been conducted. The experiments were verified on randomized complete block design (RCBD) with three treatments Viz., T1; thiamethoxam (Actara 25% WP, 0.58g/2.88L),T2; acetampride (Mospilan 20 % SP, 0.72g / 2.88L), T3; lambda-cyhalothrin (Cyhalothrin 5% EC, 1.44 Cm 3/2.88L) and control. All treatments were repeated three times. The results revealed that all treatments of whitefly populations dropped in appreciable levels during 2016 and 2017 seasons. Furthermore, the results showed that the treatment after spraying with lambda –cyhalothrin gave the highest reduction in whitefly populations followed by 86.61, 71.99 and 67.80%, respectively, within 14 days of post- treatment. Respecting the impact of B. tabaci infestation on tomato pigments, the results showed that there were highly significant differences in all the mean content of pigments (chlorophyll a, b and carotenoids) in intact tomato leaves compared with the infested tomato leaves. The mean contents of chlorophyll A, B and carotenoids in intact tomato leaves were 9.155±0.134, 2.355± 0.126 and 2.436± 0.053 mg/g fresh tomato leaves, respectively, while in infested tomato leaves were 8.427± 0.710, 2.053± 0.288 and 2.759± 0.274 mg/g fresh tomato leaves, respectively. In conclusion, it could be recommended using lambda-cyhalothrin besides thiamethoxam in combating the tomato whitefly, B. tabaci, in integrated pest management (IPM).
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Claims 7
Claim · model-written summary
Thiamethoxam reduced whitefly populations by 86.61% within 14 days.
- Taxon
- TOMATO
Solanum lycopersicumt0 - Treatment
- thiamethoxame1
- Interactor
- whiteflye0pest
- Outcome
- whitefly populationse0
- Direction
- reductione0
- Value
- 86.61e0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lambda –cyhalothrin gave the highest reduction in whitefly populations followed by 86.61, 71.99 and 67.80%, respectively, within 14 days of post- treatment.”
e1“T1; thiamethoxam (Actara 25% WP, 0.58g/2.88L),T2; acetampride (Mospilan 20 % SP, 0.72g / 2.88L), T3; lambda-cyhalothrin (Cyhalothrin 5% EC, 1.44 Cm 3/2.88L) and control.”
t0“TOMATO, Lycopersicon esculentum”
Claim · model-written summary
Acetampride reduced whitefly populations by 71.99% within 14 days.
- Taxon
- TOMATOSolanum lycopersicumt0
- Treatment
- acetampridee1
- Interactor
- whiteflye0pest
- Outcome
- whitefly populationse0
- Direction
- reductione0
- Value
- 71.99e0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lambda –cyhalothrin gave the highest reduction in whitefly populations followed by 86.61, 71.99 and 67.80%, respectively, within 14 days of post- treatment.”
e1“T1; thiamethoxam (Actara 25% WP, 0.58g/2.88L),T2; acetampride (Mospilan 20 % SP, 0.72g / 2.88L), T3; lambda-cyhalothrin (Cyhalothrin 5% EC, 1.44 Cm 3/2.88L) and control.”
t0“TOMATO, Lycopersicon esculentum”
Claim · model-written summary
Lambda-cyhalothrin reduced whitefly populations by 67.80% within 14 days.
- Taxon
- TOMATOSolanum lycopersicumt0
- Treatment
- lambda-cyhalothrine1
- Interactor
- whiteflye0pest
- Outcome
- whitefly populationse0
- Direction
- reductione0
- Value
- 67.80%e0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lambda –cyhalothrin gave the highest reduction in whitefly populations followed by 86.61, 71.99 and 67.80%, respectively, within 14 days of post- treatment.”
e1“T1; thiamethoxam (Actara 25% WP, 0.58g/2.88L),T2; acetampride (Mospilan 20 % SP, 0.72g / 2.88L), T3; lambda-cyhalothrin (Cyhalothrin 5% EC, 1.44 Cm 3/2.88L) and control.”
t0“TOMATO, Lycopersicon esculentum”
Claim · model-written summary
Intact tomato leaves had higher chlorophyll A than infested leaves.
- Taxon
- TOMATOSolanum lycopersicumt0
- Organ / stage
- tomato leavese0
- Interactor
- Bemisia tabaci
Bemisia tabacit1pest - Outcome
- chlorophyll Ae0
- Value
- 9.155±0.134e0
- Comparator
- infested tomato leavese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean contents of chlorophyll A, B and carotenoids in intact tomato leaves were 9.155±0.134, 2.355± 0.126 and 2.436± 0.053 mg/g fresh tomato leaves, respectively, while in infested tomato leaves were 8.427± 0.710, 2.053± 0.288 and 2.759± 0.274 mg/g fresh tomato leaves, respectively.”
e1“there were highly significant differences in all the mean content of pigments (chlorophyll a, b and carotenoids) in intact tomato leaves compared with the infested tomato leaves.”
t0“TOMATO, Lycopersicon esculentum”
t1“Bemisia tabaci”
Claim · model-written summary
Intact tomato leaves had higher chlorophyll B than infested leaves.
- Taxon
- TOMATOSolanum lycopersicumt0
- Interactor
- Bemisia tabaciBemisia tabacit1pest
- Outcome
- chlorophyll A, Be0
- Value
- 2.355± 0.126e0
- Comparator
- infested tomato leavese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean contents of chlorophyll A, B and carotenoids in intact tomato leaves were 9.155±0.134, 2.355± 0.126 and 2.436± 0.053 mg/g fresh tomato leaves, respectively, while in infested tomato leaves were 8.427± 0.710, 2.053± 0.288 and 2.759± 0.274 mg/g fresh tomato leaves, respectively.”
t0“TOMATO, Lycopersicon esculentum”
t1“Bemisia tabaci”
Claim · model-written summary
Infested tomato leaves had higher carotenoids than intact leaves.
- Taxon
- TOMATOSolanum lycopersicumt0
- Interactor
- Bemisia tabaciBemisia tabacit1pest
- Outcome
- carotenoidse0
- Value
- 2.759± 0.274 mg/ge0
- Comparator
- intact tomato leavese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean contents of chlorophyll A, B and carotenoids in intact tomato leaves were 9.155±0.134, 2.355± 0.126 and 2.436± 0.053 mg/g fresh tomato leaves, respectively, while in infested tomato leaves were 8.427± 0.710, 2.053± 0.288 and 2.759± 0.274 mg/g fresh tomato leaves, respectively.”
t0“TOMATO, Lycopersicon esculentum”
t1“Bemisia tabaci”
Claim · model-written summary
The authors recommend lambda-cyhalothrin and thiamethoxam for tomato whitefly management.
- Taxon
- tomatoSolanum lycopersicume0
- Interactor
- B. tabaciBemisia tabacie0pest
- Outcome
- using lambda-cyhalothrin besides thiamethoxam in combating the tomato whiteflye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it could be recommended using lambda-cyhalothrin besides thiamethoxam in combating the tomato whitefly, B. tabaci, in integrated pest management (IPM).”
The same questions in other papers
thiamethoxam · pest · Solanum lycopersicum (tomato)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
- no effect
5 papers more in this group
See all 9 papers →lambda-cyhalothrin · pest · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- 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.