by Cornell University Agricultural Experiment Station in Ithaca .
Written in English
|Statement||[by] Samuel K. Gilmore.|
|Series||Search--agriculture, v. 1, no. 3. Entomology and limnology 1|
|LC Classifications||QL503.C6 G48|
|The Physical Object|
|Number of Pages||12|
|LC Control Number||75636265|
Evidence that soil-dwelling Collembola prey on nematodes, including those parasitic in plants, is considered, and it is concluded that these insects could have important effects on nematode populations under certain circumstances. The use of chemicals such as carbaryl (Sevin), which are highly toxic to Collembola, could thus result in an increase in the population of harmful nematodes in soil Cited by: We manipulated Collembola Folsomia candida Willem density and observed the density effect on carbon and nitrogen mineralization and on nematodes in microcosms filled with mineral soil. Collembolan densities were 0 (control), 25 (low), (medium), and (high) individuals per microcosm. The Collembola enhanced soil respiration and nitrogen mineralization rate in a density Cited by: 3. The Soil Food Web and the Soil Nematode Community 4. Global Food Security, Soil Health and Sustainable Agriculture Section III: Natural Enemies of Nematodes 5. Nematophagous Fungi and Oomycetes 6. Nematodes, Mites and Collembola as Predators of Nematodes, and the role of Generalist Predators 7. Plant-parasitic nematodes are one of multiple causes of soil-related sub-optimal crop performance. This book integrates soil health and sustainable agriculture with nematode ecology and suppressive services provided by the soil food web to provide holistic solutions. Biological control is an important component of all nematode management programmes, and with a particular focus on integrated.
Biological Control of Plant-parasitic Nematodes by Graham Stirling, , available at Book Depository with free delivery worldwide. The effects are mostly indirect and depend on temperature, water content, substrate quality, population density, Collembola species, plant species and in particular on interactions with other soil biota. Key mechanisms are fungal feeding, distribution of fungal propagules, root herbivory and predation on nematodes. nematodes Top level predators e.g. birds Soil-dwelling higher-level predators Predatory mites Protists Bacterial feeding nematodes Collembola Fungal feeding mites Fungal feeding nematodes Bacteria Root-parasitic nematodes Fungi Earthworm Figure 1. Relationship between organic matter decomposition and the types of microorganisms and animals. Detection times for nematode DNA within the guts of Collembola were longer than in mites, with half‐lives (50% of samples testing positive) of h and h, respectively. F. candida significantly reduced numbers of the nematode H. megidis, with rates of predation of ∼ nematode infective juveniles per collembolan per hour over 10 h.
O. armatus is, however, more catholic in its food choice than many collembola and has been observed feeding on freshly shed green leaves (Hutson, ), nematodes (Gilmore, ) and nematode. The only obligatory predators among Collembola are Friesea and Metisotoma (Hopkin ), while zoophagy incl. necrophagy, predation on smaller animals and . Some springtails are predators, feeding on nematodes, rotifers and even other Collembola. The order is famous for swarming; incredible numbers can appear on snow or other bare places. Average densities of springtails in the soil are around , per cubic metre, but . Effects of fungivorous and predatory soil arthropods on free-living nematodes and tardigrades were studied in a factorial microcosm experiment. A stepwise increase in faunal complexity was obtained by adding soil arthropods to defaunated humus samples from an irrigated+fertilized and an untreated stand of Scots pine. The effects were assessed after and days at 15°C and a soil moisture.