Paper · 2023 · Pest Management Science

Use of insect pest thresholds in oilseed rape and cereals: is it worth it?

Lukas Thiel; Marcus Mergenthaler; Martin Wutke; et al.

6
claims
12
verbatim quotes
7
citations
2
research areas
✓
Open access · other-oa

Abstract

BACKGROUND: Integrated pest management (IPM) uses thresholds to minimize pesticide use, and field monitoring of damaging organisms is an important component to evaluate whether or not thresholds have been breached. However, monitoring requires time and knowledge which impacts costs and benefits. In this study, we evaluated the effects of using insect pest thresholds on time effort, frequency of insecticide treatment and economics in comparison with common farm practices (business as usual) in winter wheat (WW), winter barley (WB) and winter oilseed rape (OSR). This study was done over 2 years (2018 to 2020) on 24 conventionally managed farms in North Rhine-Westphalia (Germany). RESULTS: /season). The use of insecticides in OSR was significantly reduced by 42% in comparison to business as usual. In cereal crops, the use of insecticide treatment was reduced by 50% but this was not significantly different to business as usual. Yields were not significantly reduced when crops were managed in accordance with IPM, and negative differences were small and not significant. However, economically, the costs of monitoring can only be recovered when labor costs and commodity prices are low and insecticide cost is high. CONCLUSION: Insect pest thresholds can help link the policy and environmental goals of insecticide reduction and the agronomic goal of production security. In the future, the time and cost required for monitoring should be reduced through intelligent solutions and tools, increasing the economic viability of monitoring and IPM. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Abstract from the paper’s OpenAlex record; open copy licensed other-oa. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 6

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Using insect pest thresholds reduced insecticide use in winter oilseed rape by 42% compared with business as usual.

Taxon
winter oilseed rapeBrassica napuse0
Treatment
insect pest thresholdse0
Outcome
use of insecticidese1
Direction
reducede1
Value
42%e1
Comparator
business as usuale1

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“we evaluated the effects of using insect pest thresholds on time effort, frequency of insecticide treatment and economics in comparison with common farm practices (business as usual) in winter wheat (WW), winter barley (WB) and winter oilseed rape (OSR)”

✓ located verbatim in the source · abstract, characters 312–565 · show in text ↑
e1

“The use of insecticides in OSR was significantly reduced by 42% in comparison to business as usual”

✓ located verbatim in the source · abstract, characters 706–804 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

In cereal crops, insecticide treatment use was reduced by 50% but not significantly different from business as usual.

Taxon
winter wheat (WW), winter barley (WB)Hordeum vulgareTriticum aestivume0
Treatment
insect pest thresholdse0
Outcome
use of insecticide treatmente2
Direction
reducede2
Value
50%e2
Comparator
business as usuale2

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“we evaluated the effects of using insect pest thresholds on time effort, frequency of insecticide treatment and economics in comparison with common farm practices (business as usual) in winter wheat (WW), winter barley (WB) and winter oilseed rape (OSR)”

✓ located verbatim in the source · abstract, characters 312–565 · show in text ↑
e2

“In cereal crops, the use of insecticide treatment was reduced by 50% but this was not significantly different to business as usual”

✓ located verbatim in the source · abstract, characters 806–936 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Yields were not significantly reduced when winter cereals and oilseed rape were managed with IPM.

Taxon
winter wheat (WW), winter barley (WB)Hordeum vulgareTriticum aestivume0
Treatment
managed in accordance with IPMe3
Outcome
Yieldse3
Direction
not significantly reducede3

Not reportedComparator

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“we evaluated the effects of using insect pest thresholds on time effort, frequency of insecticide treatment and economics in comparison with common farm practices (business as usual) in winter wheat (WW), winter barley (WB) and winter oilseed rape (OSR)”

✓ located verbatim in the source · abstract, characters 312–565 · show in text ↑
e3

“Yields were not significantly reduced when crops were managed in accordance with IPM”

✓ located verbatim in the source · abstract, characters 938–1022 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

The costs of monitoring can only be recovered when labor costs and commodity prices are low and insecticide cost is high.

Taxon
winter wheat (WW), winter barley (WB)Hordeum vulgareTriticum aestivume0
Treatment
monitoringe4
Outcome
costs of monitoring can only be recoverede4
Qualifier
when labor costs and commodity prices are low and insecticide cost is highe4

Not reportedDirection

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“we evaluated the effects of using insect pest thresholds on time effort, frequency of insecticide treatment and economics in comparison with common farm practices (business as usual) in winter wheat (WW), winter barley (WB) and winter oilseed rape (OSR)”

✓ located verbatim in the source · abstract, characters 312–565 · show in text ↑
e4

“the costs of monitoring can only be recovered when labor costs and commodity prices are low and insecticide cost is high”

✓ located verbatim in the source · abstract, characters 1104–1224 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Insect pest thresholds can help link the policy and environmental goals of insecticide reduction with production security.

Taxon
winter wheat (WW), winter barley (WB)Hordeum vulgareTriticum aestivume0
Treatment
insect pest thresholdse5
Outcome
insecticide reductione5

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“we evaluated the effects of using insect pest thresholds on time effort, frequency of insecticide treatment and economics in comparison with common farm practices (business as usual) in winter wheat (WW), winter barley (WB) and winter oilseed rape (OSR)”

✓ located verbatim in the source · abstract, characters 312–565 · show in text ↑
e5

“Insect pest thresholds can help link the policy and environmental goals of insecticide reduction”

✓ located verbatim in the source · abstract, characters 1238–1334 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The time and cost required for monitoring should be reduced through intelligent solutions and tools.

Taxon
winter wheat (WW), winter barley (WB)Hordeum vulgareTriticum aestivume0
Outcome
the time and cost required for monitoringe6

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“we evaluated the effects of using insect pest thresholds on time effort, frequency of insecticide treatment and economics in comparison with common farm practices (business as usual) in winter wheat (WW), winter barley (WB) and winter oilseed rape (OSR)”

✓ located verbatim in the source · abstract, characters 312–565 · show in text ↑
e6

“the time and cost required for monitoring should be reduced through intelligent solutions and tools”

✓ located verbatim in the source · abstract, characters 1397–1496 · show in text ↑

ipm · yield · Triticum aestivum (wheat)Positive and negative results

14 papers: 12 positive, 2 negative or no effect

1 paper in the same direction as this paper · 12 in the opposite direction

  1. positive
  2. positive
  3. positive

10 papers more in this group

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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.