Journal ArticleDOI
Effects of plant diversity on the density and herbivory of the flea beetle, Phyllotreta cruciferae Goeze, in California collard (Brassica oleracea) cropping systems.
TLDR
Populations of the flea beetle, Phyllotreta cruciferae Goeze (Coleoptera:Chrysomelidae), were greater in weed-free collards than in collard monocultures and polycultures left weedy for 2 or 4 weeks after transplanting or for the entire season.About:
This article is published in Crop Protection.The article was published on 1983-12-01. It has received 36 citations till now. The article focuses on the topics: Flea beetle & Brassica oleracea.read more
Citations
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Vegetational Diversity and Arthropod Population Response
TL;DR: Vegetational diversity plays a central role in this research renaissance on cultural and biological controls in entomology because it involves mixing different kinds of plants in a plant community.
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Impact of agricultural diversification on the insect community of cruciferous crops
TL;DR: Quantitative data are needed to determine the level of change in plant quality brought about by companion planting that alters arthropod behavior, as the indirect role habitat manipulation plays in the population dynamics of insect pests and natural enemies still remains unclear in manysy stems.
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Vegetation diversity and insect pest outbreaks
TL;DR: The development of most insect pest complexes have been associated with the expansion of crop monocultures at the expense of weeds, hedgerows and other natural vegetation, thereby decreasing local habitat diversity.
References
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Journal ArticleDOI
Organization of a Plant-Arthropod Association in Simple and Diverse Habitats: The Fauna of Collards (Brassica Oleracea)
TL;DR: The results suggest a new proposition, the resource concentration hypothesis, which states that herbivores are more likely to find and remain on hosts that are growing in dense or nearly pure stands; that the most specialized species frequently attain higher relative densities in simple environments; and that biomass tends to become concentrated in a few species, causing a decrease in the diversity of herbsivores in pure stands.
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The influence of vegetational diversity on the population ecology of a specialized herbivore, Phyllotreta cruciferae (Coleoptera: Chrysomelidae).
TL;DR: The environmental capacity (Determination in Schwerdtfeger's terminology) of diverse natural communities is lower than that of natural or man-made monocultures and the “associational resistance” resulting from the higher taxonomic and microclimatic complexity of natural vegetation tends to reduce outbreaks of herbivores in diverse communities.
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Insect herbivore abundance in tropical monocultures and polycultures: an experimental test of two hypotheses'
TL;DR: The study of population dynamics of six beetle pests in monocultures and polycultures of the corn-bean-squash agroecosystem in Costa Rica suggests that the Resource Concentration Hypothesis rather than the Enemieshypothesis can account for differences in beetle abundance.
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Isothiocyanates, nitriles and thiocyanates as products of autolysis of glucosinolates in Cruciferae
TL;DR: In this paper, glucosinolates from seventy-nine 8-week-old plant species were hydrolysed and the volatile products identified by GC-MS and related to previous published findings.
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Effects of Plant Density and Diversity on the Population Dynamics of a Specialist Herbivore, the Striped Cucumber Beetle, Acalymma Vittata (Fab)
TL;DR: To determine the effects of plant density and diversity on the population dynamics of a specialist herbivore, the striped cucumber beetle, cucumbers, and its insect predators were planted in monocultures and in polycultures with corn and broccoli.