Action Thresholds Based on Plant Defoliation for Management of Colorado Potato Beetle (Coleoptera: Cbrysomelidae) in Potato

Zehnder, G. W.; Encill, Anne M.; Speese, John

doi:10.1093/jee/88.1.155

Cited by 26 publications

(27 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Potatoes can tolerate substantial levels of defoliation (Hare, 1980;Zehnder et al, 1995), and we were not expecting to see yield increases from the 1X, late-season applications. On the other hand, achieving a mean 53% reduction in defoliation damage (from 25% to 11% defoliation) and 18% increase in yield from the MX spray programs was anticipated and is in accord with our previous experiences.…”

Section: Discussionmentioning

confidence: 97%

Delayed efficacy of Beauveria bassiana foliar spray applications against Colorado potato beetle: Impacts of number and timing of applications on larval and next-generation adult populations

Wraight

Ramos

2015

Biological Control

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 97%

Delayed efficacy of Beauveria bassiana foliar spray applications against Colorado potato beetle: Impacts of number and timing of applications on larval and next-generation adult populations

Wraight

Ramos

2015

Biological Control

View full text Add to dashboard Cite

“…, Zehnder et al. , Stieha and Poveda ). The baseline for tolerance‐based management strategies is to identify the damage threshold for a crop, which is the maximum amount of defoliation a plant can experience with no reduction in yield (Pedigo et al.…”

Section: Discussionmentioning

confidence: 97%

“…, Evanylo and Entomo , Zehnder et al. ). Tolerance‐based management practices have been shown to reduce pesticides by 50% while still maintaining yield (Chalfant et al.…”

Section: Discussionmentioning

confidence: 99%

Can overcompensation increase crop production?

Poveda

Díaz

Ramírez

2017

Ecology

View full text Add to dashboard Cite

The two most pressing challenges to agriculture worldwide are feeding a rapidly growing human population and developing more sustainable agricultural practices that do not threaten human and ecosystem health. We address these challenges through research in plant-herbivore interactions, specifically overcompensatory responses in potato to herbivore damage. While herbivory is usually detrimental to most crops, some potato cultivars can overcompensate and increase crop productivity up to two-fold in response to herbivore damage. However, biotic and abiotic factors are known to influence compensatory responses. Here we tested if compensatory plant responses to herbivory increase productivity of potatoes under field conditions along gradients of altitude and landscape simplification in 15 different farms. Our results suggest that compensatory plant responses could double the mean productivity of a potato farm in relation to the productivity of undamaged plants. The compensatory response is best predicted by pest pressure on a farm with potato plants having the maximum productivity when 10% of the tubers are damaged and decreasing in productivity as pest pressure increases. To a lesser extent an interaction between altitude and landscape simplification did affect the compensatory response, suggesting that abiotic factors play an important role in compensation. Our results suggest that overcompensation-based management practices could be used to maximize yields on working potato farms. Further research is required to determine action thresholds (i.e. the damage levels at which pest control needs to be enacted to maximize yields and minimize insecticide use) to develop more sustainable ways of increasing yields in the future.

show abstract

“…Potatoes can tolerate a considerable amount of defoliation (Hare, 1980;Zehnder et al, 1995), and the diVerences in yields resulting from addition of B. bassiana to B. thuringiensis applications would probably be small and diYcult to detect employing standard experimental Weld-test designs. In the tests reported herein, beetle populations were so low, or plants were so severely stressed from drought conditions, that few diVerences were observed in yields from the various treatments and controls.…”

Section: Discussionmentioning

confidence: 99%

Synergistic interaction between Beauveria bassiana- and Bacillus thuringiensis tenebrionis-based biopesticides applied against field populations of Colorado potato beetle larvae

Wraight

Ramos

2005

Journal of Invertebrate Pathology

118

View full text Add to dashboard Cite

Action Thresholds Based on Plant Defoliation for Management of Colorado Potato Beetle (Coleoptera: Cbrysomelidae) in Potato

Cited by 26 publications

References 0 publications

Delayed efficacy of Beauveria bassiana foliar spray applications against Colorado potato beetle: Impacts of number and timing of applications on larval and next-generation adult populations

Delayed efficacy of Beauveria bassiana foliar spray applications against Colorado potato beetle: Impacts of number and timing of applications on larval and next-generation adult populations

Can overcompensation increase crop production?

Synergistic interaction between Beauveria bassiana- and Bacillus thuringiensis tenebrionis-based biopesticides applied against field populations of Colorado potato beetle larvae

Contact Info

Product

Resources

About