Readme file generated by Chloé A. Raderschall on 2025-03-20 for the dataset with the title:
Data for: Semiochemically assisted trap cropping to reduce broad bean beetle (Bruchus rufimanus) infestation in faba bean
Dataset doi: https://doi.org/10.5878/sqp5-zx59

For further information, see methods in the publication Raderschall et al. 2025. " Semiochemically assisted trap cropping to reduce broad bean beetle (Bruchus rufimanus) infestation in faba bean”, https://doi.org/10.1016/j.agee.2025.109669

File information:
Broad bean beetle (Bruchus rufimanus) eggs were counted on 50 pods per transect in each field when about 50% of pods had reached full length, between 7-18 July. Each pod was collected from a separate randomly selected plant along the transect. Every third pod was collected from the bottom, middle or top part of the plant, respectively. 
File "Eggs.csv"
Variables 6: Year, Field_Pair, Treatment, Transect, Pod_ID, Eggs 
3600 Data rows

To assess the proportion of damaged beans, approximately 90 (range 70 - 118) faba bean pods were collected from each transect at crop maturity, soon before commercial crop harvest by the farmers. Every pod came from a different randomly selected plant along the transect and we interchangeably picked pods that were positioned at the bottom, center and top of the plant. We then opened the pods, counted the beans and checked them for characteristic broad bean beetle emergence holes. Beans with emergence holes we counted as damaged beans.
File "BeanDamage.csv"
Variables 8: Year, Field_Pair, Treatment, Transect, NPods, Damagedtotal, Totalbeans, Notes
72 Data rows 

We placed kairomonal traps every 20 m inside the trap crop perimeter strip in all treated fields. Traps were activated from the bud stage, June 4-13, until the end of the pod formation stage 6-7 weeks later, July 17-25. Two kairomonal attractants were used: one with faba bean flower and one with faba bean pod scent. We counted the number of broad bean beetles trapped weekly and emptied and re-filled the water traps in 2021, or marked caught beetles with nail polish in the sticky traps used in 2023 in order to keep track of the number of individual beetles caught weekly. In a subset of eight traps in each field, situated in pairs along each of the four field edge directions, we identified and counted male and female broad bean beetles that were trapped. In the case of two triangular fields, beetles were identified to sex only in six traps.
File "Traps.csv"
Variables 11: Year, Field_Pair, Dateempty, Datestarted, Phase, Trapdays, Trap_ID, Scent, Bruchus, Males, Females
3512 Data rows

To analyse yield and yield components, we collected approximately 90 pods (range 70 - 118) from each transect at crop maturity, soon before commercial crop harvest by the farmers. We also counted the number of faba bean plants in four 1 by 1m quadrats in each transect, and the number of pods with beans on 10 randomly selected plants per transect. 
After oven drying, we opened the pods, counted and weighed the beans. From this data, we divided the number of beans with the number of pods to calculate beans per pod, divided weight with the number of beans to calculate weight per bean. Finally, we produced an estimate of the crop yield for each transect by multiplying average number of plants per square meter, pods per plant, beans per pod and weight per bean. 
 File "Yield.csv"
Variables 11: Year, Field_Pair, Treatment, Transect, avrgPlantsperm2, avrgPodsperplant, beanmass, beansperpod, weightperbean, BeanWeightSqm, Notes
72 Data rows

Explanation of variables:
Year: Year data was collected 
Field_Pair: Field pair identity
Treatment: A factor to specify the experimental field treatment (treated versus control)
Transect: A factor to specify the transect from where data was collected (strip, edge, center)
Pod_ID: pod identity
Eggs: the number of broad bean beetle eggs per pod
NPods: The number of pods
Damagedtotal: Total number of beans with broad bean beetle damage (e.g. one or more emergence holes, beetles inside bean)
Totalbeans: Total number of beans, healthy and damaged
Dateempty: Date (YYYY-MM-DD), the traps were emptied and the beetles counted and sexed
Datestarted: Date (YYYY-MM-DD), traps were activated
Phase: Crop phenology
Trapdays: the number of days over which the traps were active and collected beetles
Trap_ID: Trap identity in each field
 Scent: kairomonal scent used in the respective trap (Flower or Pod)
Bruchus: Number of broad bean beetles (Bruchus rufimanus)
Males: Number of male Bruchus rufimanus
Females: Number of female Bruchus rufimanus
avrgPlantsperm2: Average number of plants per square meter across four quadrats per transect avrgPodsperplant: Average number of pods per plant
beanmass: Total bean dryweight (g) 
beansperpod: average number of beans per pod
weightperbean: average weight per bean (g)
BeanWeightSqm: average bean dryweight per squaremeter
Notes: Notes