Abstract
ABSTRACT Leptinotarsa decemlineata even in organic potatoes, it is often managed using pesticides. Mulching potatoes represents an alternative to reduce egg masses and larvae of L. decemlineata . In three 4‐fold replicated field trials with unmulched control plots (a) in comparison to plots mulched with grass‐clover (b) or triticale‐vetch (c) the effects on L. decemlineata population dynamics were assessed. In 2020 and 2021, larvae and their respective developmental stage of L. decemlineata were recorded twice weekly on 30 marked potato plants per plot. In 2022 assessments took place 3 times during the season on 16 plants per plot. To examine the influence of changed microclimatic conditions due to mulching, temperature loggers were installed 15°cm above the canopy and belowground. The number of larvae of L. decemlineata was significantly reduced by 65%, on average, in the mulched treatments and higher larval stages occurred later and in lower numbers compared to the unmulched plots. In 2022, a second‐generation adults of L. decemlineata occurred whose numbers were significantly reduced by about 90% in the mulched plots. During warm and hot weather, the canopy temperatures in the mulched plots considerably exceeded those of the unmulched plots, often reaching peak temperatures well above the optimum for L. decemlineata development. Mulching leads either to delayed or reduced immigration of adult beetles as well as potentially to slower egg and larval development.
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Claims 6
Claim · model-written summary
Mulched potato plots reduced the number of L. decemlineata larvae by 65% on average compared with unmulched plots.
- Taxon
- Potatoes
Solanum tuberosumt0 - Treatment
- mulched treatmentse1
- Interactor
- L. decemlineata
Leptinotarsa decemlineatae1pest - Outcome
- number of larvae of L. decemlineatae1
- Direction
- reducede1
- Value
- 65%e1
- Comparator
- unmulched plotse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mulch in Potatoes”
e1“The number of larvae of L. decemlineata was significantly reduced by 65%, on average, in the mulched treatments and higher larval stages occurred later and in lower numbers compared to the unmulched plots”
Claim · model-written summary
Higher larval stages occurred later and in lower numbers in mulched than in unmulched potato plots.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- mulched treatmentse1
- Interactor
- L. decemlineataLeptinotarsa decemlineatae1pest
- Outcome
- higher larval stagese1
- Direction
- lower numberse1
- Qualifier
- occurred latere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mulch in Potatoes”
e1“The number of larvae of L. decemlineata was significantly reduced by 65%, on average, in the mulched treatments and higher larval stages occurred later and in lower numbers compared to the unmulched plots”
Claim · model-written summary
Canopy temperatures in mulched plots exceeded those of unmulched plots during warm and hot weather.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- mulched plotse3
- Outcome
- canopy temperaturese3
- Direction
- exceedede3
- Qualifier
- During warm and hot weathere3
- Comparator
- unmulched plotse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mulch in Potatoes”
e3“During warm and hot weather, the canopy temperatures in the mulched plots considerably exceeded those of the unmulched plots”
Claim · model-written summary
The number of second-generation L. decemlineata adults was reduced by about 90% in mulched plots.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- mulched plotse2
- Interactor
- L. decemlineataLeptinotarsa decemlineatae2pest
- Outcome
- numberse2
- Direction
- reducede2
- Value
- about 90%e2
- Qualifier
- In 2022e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mulch in Potatoes”
e2“In 2022, a second‐generation adults of L. decemlineata occurred whose numbers were significantly reduced by about 90% in the mulched plots”
Claim · model-written summary
Mulching leads to delayed or reduced immigration of adult L. decemlineata beetles.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- Mulchinge4
- Outcome
- immigration of adult beetlese4
- Direction
- delayed or reducede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mulch in Potatoes”
e4“Mulching leads either to delayed or reduced immigration of adult beetles”
Claim · model-written summary
Mulching potentially slows egg and larval development of L. decemlineata.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- Mulchinge4
- Outcome
- egg and larval developmente5
- Direction
- slowere5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mulch in Potatoes”
e4“Mulching leads either to delayed or reduced immigration of adult beetles”
e5“as well as potentially to slower egg and larval development”
The same questions in other papers
mulching · Leptinotarsa decemlineata · Solanum tuberosum (potato)Results differ
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.