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Soil Organisms and EcologySoil Organisms and Ecology
Chapter 11Chapter 11
Table 11.1
FIGURE 7–5FIGURE 7–5 Interrelationships of autotrophic and heterotrophic organisms: nutrient cycling and energy flow. Interrelationships of autotrophic and heterotrophic organisms: nutrient cycling and energy flow.
Michael J. Singer and Donald N. MunnsMichael J. Singer and Donald N. MunnsSoils: An Introduction, 6eSoils: An Introduction, 6e
FIGURE 7–4 Most soil microbes live on surfaces. Top: Fungal hyphae on a sand grain. Bottom: Bacteria (Rhizobium) attached to a root hair.
Michael J. Singer and Donald N. MunnsMichael J. Singer and Donald N. MunnsSoils: An Introduction, 6eSoils: An Introduction, 6e
….. leads to association with plants
I. Associations with PlantsI. Associations with Plants
FIGURE 7–15FIGURE 7–15 Legume– Legume–RhizobiumRhizobium symbiosis: typical stages in symbiosis: typical stages in development. development.
Michael J. Singer and Donald N. MunnsMichael J. Singer and Donald N. MunnsSoils: An Introduction, 6eSoils: An Introduction, 6e
FIGURE 7–17 Mycorrhizae. (A) Major types of mycorrhizae.
Michael J. Singer and Donald N. MunnsMichael J. Singer and Donald N. MunnsSoils: An Introduction, 6eSoils: An Introduction, 6e
FIGURE 7–18 Mycorrhizal association between root hairs and the fungal hyphae
Michael J. Singer and Donald N. MunnsMichael J. Singer and Donald N. MunnsSoils: An Introduction, 6eSoils: An Introduction, 6e
II. Soil Management EffectsII. Soil Management Effects
III. Soil Organism TableIII. Soil Organism Table
Michael J. Singer and Donald N. MunnsMichael J. Singer and Donald N. MunnsSoils: An Introduction, 6eSoils: An Introduction, 6e
FIGURE 7–1FIGURE 7–1 Sizes and forms of soil inhabitants, in relation to soil particle sizes. Sizes and forms of soil inhabitants, in relation to soil particle sizes.
IV. Practical Outcomes of AdaptationsIV. Practical Outcomes of Adaptations
A. Actinomycetes: medical antibodiesA. Actinomycetes: medical antibodies
B. Mycorrhizal and N fixing symbiosis: improve productivity of B. Mycorrhizal and N fixing symbiosis: improve productivity of cultivated plantscultivated plants
C. Predatory/Parasitic Fungi/Protozoa: control root pathogensC. Predatory/Parasitic Fungi/Protozoa: control root pathogens
D. Specialized/Opportunistic Bacteria: eliminate toxic D. Specialized/Opportunistic Bacteria: eliminate toxic materialsmaterials