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Intraguild predation among biological-control agents: theory and evidence
- J. Rosenheim, H. K. Kaya, L. Ehler, J. Marois, B. Jaffee
- Environmental Science, Biology
- 1 September 1995
The ability to develop successful programs of biological control will be enhanced by field studies that address the complexity of trophic interactions occurring in agroecosystems, and it is hypothesize that IGP by predators is particularly likely to influence the efficacy of Biological control.
Role of Soil Microflora and Pratylenchus penetrans in an Apple Replant Disease
- B. Jaffee
Nematode-trapping fungi of a natural shrubland: Tests for food chain involvement
The spatial and temporal changes in the abundance of nematode-trapping fungi and in suppression of nem atodes in a coastal shrub- land are described and the involvement of ne- matophagous organisms, including nematodes-trap- ping fungi is described.
Trap production by nematophagous fungi growing from parasitized nematodes
Conditions that induce traps may normally prevail when these fungi grow from nematodes in soil, and parasitism may be more important to these fungi than has previously been recognized.
Alginate Pellet Formulation of Hirsutella rhossiliensis for Biological Control of Plant-Parasitic Nematodes
Transmission with dried pellets was low when hyphal density was low or when hyphae were stored and macerated in water, and addition of dried pellets to soil suppressed invasion of roots by H. schachtii.
Effects of a common harvester ant (Messor andrei) on richness and abundance of soil biota
Soil pH and the Activity of a Pelletized Nematophagous Fungus.
It is concluded that, in these two soils, heat treatment or low soil pH suppresses soil organisms that otherwise interfere with growth of Hirsutella rhossiliensis from alginate pellets.
Nematode-trapping fungi in organic and conventional cropping systems.
Bacterivorous nematodes were more abundant and microbial biomass (substrate-induced respiration) was greater in organic than in conventional plots and suppression of the root-knot nematode Meloidogyne javanica was not related to management system or population density but was positively related to microbial biomass.
Fungi associated with roots of apple seedlings grown in soil from an apple replant site.