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            <r:String xml:lang="sv">Data för: Landscape-scale drivers of insect pest regulation in sugar beet</r:String>
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        <r:String xml:lang="sv">Data för "Service crops for protection against multiple insect pests in sugar beet during crop establishment"</r:String>
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      <r:Content xml:lang="sv">Skade- och växtbedömningar genomfördes i totalt fem fältförsök under 2024 (n=2) och 2025 (n=3) i Skåne i södra Sverige. Varje försök omfattade fem behandlingar: sockerbeta samodlad med vårkorn, sockerbeta samodlad med persisk klöver, sockerbeta samodlad med vitsenap samt två kontrollbehandlingar: sockerbeta i renbestånd med bandsprutning av herbicid och sockerbeta i renbestånd med bredsprutning av herbicid.

Vi fokuserade på att undersöka skadegörarangrepp på blad och stjälkar. Bedömningar av skadegörare på blad bestod av att räkna antalet ägg av betfluga, bladlöss samt bladskador orsakade av trips, jordloppor, lilla betbaggen eller ryggradsdjur i fyra slumpmässigt utvalda grupper om fem plantor i varje försöksruta. Under 2024 genomfördes inventeringarna mellan den 8 och 30 maj med tre till fyra dagars intervall, medan de under 2025 genomfördes mellan den 15 april och 15 maj med fem till nio dagars intervall. Bedömningar av skador på stjälkar bestod av att räkna antalet skador per planta på 10 slumpmässigt utvalda plantor vid två tillfällen mellan den 13 och 24 maj 2024. Under 2025 bedömdes dessa i stället som andelen av stjälken som var skadad på varje planta, hos 15 slumpmässigt utvalda plantor, vid ett tillfälle mellan den 23 och 28 april. Samtliga bedömningar av skadegörare på blad och stjälkar utfördes när grödan befann sig mellan BBCH-stadierna 9 och 16, eftersom denna period – med undantag för bladlöss – motsvarar den tid då skadegörarna orsakar de ekonomiskt mest betydelsefulla skadorna på grödan.

Växtbedömningar genomfördes vid grödstadium BBCH 15–16 (baserat på den standardiserade BBCH-skalan för växters fenologiska utvecklingsstadier). Vi mätte planttäthet hos sockerbeta samt ovanjordisk biomassa av servicegrödor, ogräs och sockerbeta (den senare mättes endast under 2025). Dessa bedömningar utfördes i fyra kvadrater om 1 × 1 m i varje försöksruta. Under 2025 utfördes dock vissa av biomassabedömningarna för servicegrödor och ogräs endast i 50 % eller 25 % av kvadratens yta.

Alla data aggregerades över prover (plantor) och inventeringsomgångar för varje försöksplats och behandling inför analysen.

För ytterligare information, se metodavsnittet i manuskriptet "Service crops for protection against multiple insect pests in sugar beet during crop establishment" av Neus Rodriguez-Gasol, Göran Bergkvist och Ola Lundin.</r:Content>
      <r:Content xml:lang="en">Pest and plant assessments were performed on a total of five field experiments in 2024 (n=2) and 2025 (n=3) in Scania southernmost Sweden. 
Each experiment had five treatments: sugar beet intercropped with spring Barley, sugar beet intercropped with Persian clover, sugar beet intercropped with white mustard and two controls: sugar beet sole cropping with band spraying of herbicide and sugar beet sole cropping with broad spraying of herbicide. 

We focused on inspect pest assessments on leaves and stems. Pest assessments on leaves consisted of counting the number of beet leafminer eggs, aphids and leaf injuries by thrips, flea beetles, pygmy mangold beetles or vertebrates in four randomly selected groups of five plants in each plot. In 2024, surveys were conducted between the 8th and the 30th of May, at three-four day intervals, while in 2025 they were conducted between the 15th of April and the 15th of May, at five-nine day intervals. Pest assessments on stems consisted of counting the number of injuries per plant, in 10 randomly selected plants, twice between the 13th and the 24th of May in 2024. Whereas in 2025, these were evaluated as the proportion of the stem injured in each plant, in 15 randomly selected plants, once between the 23rd and 28th of April. All leaf and stem pest assessments were performed while the crop was between BBCH growth stages 9 and 16, because, with the exception of aphids, this period corresponds to when pests inflict the most economically important crop injury.


Plant assessments were performed at crop stage BBCH 15-16 (based on the standardized BBCH scale for plant phenological development). We measured sugar beet plant density and the aboveground biomass of service crops, weeds and sugar beet (the latter was measured only in 2025). These assessments were done in four 1 by 1 m quadrats in each plot. In 2025 however, a proportion of the assessments of biomass of service crop and weeds were only done in 50% or 25% of the quadrat.

All data were aggregated across samples (plants) and survey rounds for each site and treatment for analysis.

For further information, see methods in the manuscript "Service crops for protection against multiple insect pests in sugar beet during crop establishment" by Neus Rodriguez-Gasol, Göran Bergkvist &amp; Ola Lundin.</r:Content>
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