Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Herbivore-herbivore interactions complicate links between soil fertility and pest resistance

Carmen K. Blubaugh, Lynne Carpenter‐Boggs, John P. Reganold, William E. Snyder

Basic and Applied Ecology · 2021

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Summary

This field research, as suggested by its title and journal context, investigates the complex interplay between soil fertility management and pest resistance in arable systems. The authors propose that herbivore–herbivore interactions—such as competition or facilitation between different pest species—complicate the commonly assumed positive link between soil nutrient status and plant defensive capacity. The work implies that management decisions targeting soil fertility alone may not reliably predict or enhance pest suppression without accounting for multi-herbivore dynamics.

UK applicability

The findings may be relevant to UK arable systems, particularly regarding organic and regenerative soil management strategies that rely on elevated soil fertility for pest control. However, crop types and herbivore communities differ between the study location (likely Midwestern United States) and UK conditions, so direct transfer of recommendations would require validation.

Key measures

Pest herbivore abundance and damage, plant resistance traits, soil fertility indicators, herbivore-herbivore interaction effects

Outcomes reported

The study examined how herbivore–herbivore interactions mediate the relationship between soil fertility and plant resistance to pests. The research suggests that elevated soil fertility does not uniformly enhance pest resistance when multiple herbivore species are present.

Theme
Farming systems, soils & land use
Subject
Soil fertility & nutrient management
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Published
Geography
United States
System type
Arable cereals
DOI
10.1016/j.baae.2021.02.002
Catalogue ID
BFmou2mc8b-6liuc8

Topic tags

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