Sammanfattning

Ecological intensification utilizes biodiversity to maintain agricultural yields while reducing negative environ-mental impacts. While pest management is a common goal of ecological intensification, studies examining ecologically intensified pest management systems over longer time scales are rare. Using the push-pull system in Western Kenya, we examine whether pest abundance (for both insects and parasitic weeds) and yield vary with time since a given push-pull field was established. With a total of 1880 data points from 476 unique farmers and 24 cropping seasons, we found that pests declined with time since establishment in both push-pull and nearby control fields, while yield improved with time since establishment in push-pull fields. Although this study did not directly address mechanisms, it seems likely that pests in the push-pull system are not successfully adapting to overcome its pest management effects given the continued declines in pest abundance over time. Our data suggest that ecologically intensified agriculture may be resilient against pest adaptation over time, maintaining consistently high yields.

Nyckelord

Ecological intensification; Sustainable agriculture; Integrated pest management; Companion crop; Long -term data; Maize; Zea mays; Stemborer; Striga hermonthica; Chilo partellus; Busseola fusca

Publicerad i

Agriculture, Ecosystems and Environment
2023, Volym: 347, artikelnummer: 108345

SLU författare

• Jonsson, Mattias

  • Institutionen för ekologi, Sveriges lantbruksuniversitet
    

Associerade SLU-program

SLU Nätverk växtskydd


Globala målen

SDG2 Avskaffa hunger, uppnå tryggad livsmedelsförsörjning och förbättrad nutrition samt främja ett hållbart jordbruk


UKÄ forskningsämne

Jordbruksvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1016/j.agee.2023.108345

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/121306