Paper · 2016 · Progressive Horticulture

Eco-friendly approaches for the management of defoliators on onion

A.G. Sreenivas; Sushila Nadagouda; V. Rachappa; et al.

10
claims
31
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae) and widely grown herbaceous biennial vegetable crop. Insect pests and diseases are the major constraints in production and productivity of Onion. The tobacco caterpillar, Spodoptera litura (F) is one of the most important insect pests of onion in the Asian tropics. In recent years, farmer's income is declining particularly due to the rising costs of inputs in plant protection. An experiment was carried out at Main Agricultural Research station, Raichur during September 2010 and 2011 in a Randomized Block Design having a plot size of 6.0 m2 area. Bio-efficacy of 11 treatments comprising of organic and chemical treatments were evaluated. Rynaxypyr 18.5% SC was found to be best treatment which recorded 1.18, 0.56, 0.66 and 0.86 Spodoptera larvae per plant at 1, 3, 7 and 14 DAS, respectively. At 3 DAS lufenuron and spinosad 45% SC found to be on par with each other as it recorded 1.2 and 1.3 Spodoptera larvae per plant, respectively. At 7 and 14 DAS rynaxypyr 18.5% SC stood first and was followed by novaluron 10% EC in reducing pest population (1.2 and 1.3 Spodoptera larvae per plant, respectively). In second season also similar trend was noticed. With respect to yield, novaluron 10% EC recorded highest yield of 23.30 t/ha. followed by lufenuron 5% EC (22.6 t/ha) which was on par with spinosad 45% SC which recorded 22.50 t/ha. All the insecticidal treatments recorded increase in marketable yield over untreated check. The cost benefit ratio calculated on the basis of cost of protection for different insecticidal treatments revealed that rynaxypyr 18.5% SC was found superior as it recorded net returns of Rs. 1, 10, 088/-with B: C ratio of 4.08, followed by spinosad 45% SC which recorded net returns of Rs. 1, 08, 892/-with B: C ratio of 4.07.

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Rynaxypyr 18.5% SC gave the lowest Spodoptera larval counts per plant at 1, 3, 7 and 14 days after spraying among the treatments.

Taxon
Allium cepa L.Allium cepae0
Treatment
Rynaxypyr 18.5% SCe3
Interactor
Spodoptera lituraSpodoptera liturae1pest
Outcome
Spodoptera larvae per plante3
Direction
lowerinferrede3
Value
1.18, 0.56, 0.66 and 0.86e3
Comparator
organic and chemical treatmentse2

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Spodoptera litura
Spodoptera litura · InteractorDonald Hobern from Canberra, Australia · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e1

“The tobacco caterpillar, Spodoptera litura (F) is one of the most important insect pests of onion in the Asian tropics”

✓ located verbatim in the source · abstract, characters 234–352 · show in text ↑
e2

“Bio-efficacy of 11 treatments comprising of organic and chemical treatments were evaluated”

✓ located verbatim in the source · abstract, characters 640–730 · show in text ↑
e3

“Rynaxypyr 18.5% SC was found to be best treatment which recorded 1.18, 0.56, 0.66 and 0.86 Spodoptera larvae per plant at 1, 3, 7 and 14 DAS, respectively”

✓ located verbatim in the source · abstract, characters 732–886 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Lufenuron and spinosad 45% SC gave on-par Spodoptera larval counts at 3 days after spraying.

Taxon
Allium cepa L.Allium cepae0
Treatment
lufenurone4
Interactor
Spodoptera lituraSpodoptera liturae1pest
Outcome
Spodoptera larvae per plante4
Direction
no_changeinferrede4
Value
1.2 and 1.3e4
Comparator
spinosad 45% SCe4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Spodoptera litura
Spodoptera litura · InteractorDonald Hobern from Canberra, Australia · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e1

“The tobacco caterpillar, Spodoptera litura (F) is one of the most important insect pests of onion in the Asian tropics”

✓ located verbatim in the source · abstract, characters 234–352 · show in text ↑
e4

“At 3 DAS lufenuron and spinosad 45% SC found to be on par with each other as it recorded 1.2 and 1.3 Spodoptera larvae per plant, respectively”

✓ located verbatim in the source · abstract, characters 888–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Novaluron 10% EC reduced pest population at 7 and 14 days after spraying, following rynaxypyr 18.5% SC.

Taxon
Allium cepa L.Allium cepae0
Treatment
novaluron 10% ECe5
Interactor
Spodoptera lituraSpodoptera liturae1pest
Outcome
pest populatione5
Direction
reducinge5
Value
1.2 and 1.3e5
Comparator
rynaxypyr 18.5% SCe5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Spodoptera litura
Spodoptera litura · InteractorDonald Hobern from Canberra, Australia · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e1

“The tobacco caterpillar, Spodoptera litura (F) is one of the most important insect pests of onion in the Asian tropics”

✓ located verbatim in the source · abstract, characters 234–352 · show in text ↑
e5

“At 7 and 14 DAS rynaxypyr 18.5% SC stood first and was followed by novaluron 10% EC in reducing pest population (1.2 and 1.3 Spodoptera larvae per plant, respectively)”

✓ located verbatim in the source · abstract, characters 1032–1199 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Novaluron 10% EC gave the highest yield of 23.30 t/ha among the treatments.

Taxon
Allium cepa L.Allium cepae0
Treatment
novaluron 10% ECe6
Outcome
yielde6
Direction
higheste6
Value
23.30 t/hae6
Comparator
organic and chemical treatmentse2

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e2

“Bio-efficacy of 11 treatments comprising of organic and chemical treatments were evaluated”

✓ located verbatim in the source · abstract, characters 640–730 · show in text ↑
e6

“With respect to yield, novaluron 10% EC recorded highest yield of 23.30 t/ha”

✓ located verbatim in the source · abstract, characters 1250–1326 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Lufenuron 5% EC yield of 22.6 t/ha was on par with spinosad 45% SC at 22.50 t/ha.

Taxon
Allium cepa L.Allium cepae0
Treatment
lufenuron 5% ECe7
Outcome
yielde6
Direction
no_changeinferrede7
Value
22.6 t/hae7
Comparator
spinosad 45% SCe7

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e2

“Bio-efficacy of 11 treatments comprising of organic and chemical treatments were evaluated”

✓ located verbatim in the source · abstract, characters 640–730 · show in text ↑
e6

“With respect to yield, novaluron 10% EC recorded highest yield of 23.30 t/ha”

✓ located verbatim in the source · abstract, characters 1250–1326 · show in text ↑
e7

“followed by lufenuron 5% EC (22.6 t/ha) which was on par with spinosad 45% SC which recorded 22.50 t/ha”

✓ located verbatim in the source · abstract, characters 1328–1431 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All insecticidal treatments increased marketable yield of onion over the untreated check.

Taxon
Allium cepa L.Allium cepae0
Treatment
insecticidal treatmentse3
Outcome
marketable yielde3
Direction
increasee3
Comparator
untreated checke3

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e3

“All the insecticidal treatments recorded increase in marketable yield over untreated check”

✓ located verbatim in the source · abstract, characters 1433–1523 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Rynaxypyr 18.5% SC was superior in net returns, Rs. 1, 10, 088, compared with spinosad 45% SC.

Taxon
Allium cepa L.Allium cepae0
Treatment
rynaxypyr 18.5% SCe4
Outcome
net returnse4
Direction
superiore4
Value
Rs. 1, 10, 088/-e4
Comparator
spinosad 45% SCe5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e4

“rynaxypyr 18.5% SC was found superior as it recorded net returns of Rs. 1, 10, 088/-with B: C ratio of 4.08”

✓ located verbatim in the source · abstract, characters 1646–1753 · show in text ↑
e5

“followed by spinosad 45% SC which recorded net returns of Rs. 1, 08, 892/-with B: C ratio of 4.07”

✓ located verbatim in the source · abstract, characters 1755–1852 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Rynaxypyr 18.5% SC was superior in benefit-cost ratio, 4.08, compared with spinosad 45% SC.

Taxon
Allium cepa L.Allium cepae0
Treatment
rynaxypyr 18.5% SCe4
Outcome
B: C ratioe4
Direction
superiore4
Value
4.08e4
Comparator
spinosad 45% SCe5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e4

“rynaxypyr 18.5% SC was found superior as it recorded net returns of Rs. 1, 10, 088/-with B: C ratio of 4.08”

✓ located verbatim in the source · abstract, characters 1646–1753 · show in text ↑
e5

“followed by spinosad 45% SC which recorded net returns of Rs. 1, 08, 892/-with B: C ratio of 4.07”

✓ located verbatim in the source · abstract, characters 1755–1852 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Spinosad 45% SC had lower net returns, Rs. 1, 08, 892, than rynaxypyr 18.5% SC.

Taxon
Allium cepa L.Allium cepae0
Treatment
spinosad 45% SCe5
Outcome
net returnse5
Direction
lowerinferrede5
Value
Rs. 1, 08, 892/-e5
Comparator
rynaxypyr 18.5% SCe4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e4

“rynaxypyr 18.5% SC was found superior as it recorded net returns of Rs. 1, 10, 088/-with B: C ratio of 4.08”

✓ located verbatim in the source · abstract, characters 1646–1753 · show in text ↑
e5

“followed by spinosad 45% SC which recorded net returns of Rs. 1, 08, 892/-with B: C ratio of 4.07”

✓ located verbatim in the source · abstract, characters 1755–1852 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Spinosad 45% SC had a lower benefit-cost ratio, 4.07, than rynaxypyr 18.5% SC.

Taxon
Allium cepa L.Allium cepae0
Treatment
spinosad 45% SCe5
Outcome
B: C ratioe5
Direction
lowerinferrede5
Value
4.07e5
Comparator
rynaxypyr 18.5% SCe4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Onion (Allium cepa L.) is the important member of the family Amaryllidaceae (Alliaceae)”

✓ located verbatim in the source · abstract, characters 0–87 · show in text ↑
e4

“rynaxypyr 18.5% SC was found superior as it recorded net returns of Rs. 1, 10, 088/-with B: C ratio of 4.08”

✓ located verbatim in the source · abstract, characters 1646–1753 · show in text ↑
e5

“followed by spinosad 45% SC which recorded net returns of Rs. 1, 08, 892/-with B: C ratio of 4.07”

✓ located verbatim in the source · abstract, characters 1755–1852 · show in text ↑

spinosad · yield · Allium cepa (onion)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

1 paper in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
See all 3 papers →

insecticide · quality: postharvest · Allium cepa (onion)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 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.