Soil microorganisms and the rhizosphere

Soil Bacterial Community Structure Changes Following Disturbance of the Overlying Plant Community

“…Early work established bacterial associations with various plant species (Katznelson et al, 1948;Katznelson and Rouatt, 1957;Rovira, 1965), and more recent work is consistent with those findings (Burke et al, 1989;Söderberg et al, 2002). The early effort led to development of the rhizosphere concept (enhanced abundance and activity of bacterial community) that is commonly accepted as a property of the plant root zone.…”

“…The difference in the resident plant species has long been thought to be the driving force in 60 KANG AND MILLS SOIL SCIENCE the structure of the bacterial community within the root zone (rhizosphere effect) (Clark, 1949;Katznelson et al, 1948;Krasil'nikov, 1954;Starkey, 1929). Although grasses have diffuse root systems that permeate the soil and, in some cases (as in salt marshes), dominate the soil volume, some investigators expect the effects of plants on soil bacterial community to be different between the rhizosphere and the bulk soil (Kowalchuk et al, 2002).…”

Influence of Organic and Inorganic Amendments on Phosphorus Dynamics in Relation to Growth and Yield of Rice (cv. Shatabdi) in an Alfisol Soil

“…Soil and plant samples were collected from the pots at the time of maximum tillering (30 DAT), booting or flowering (60 DAT) and harvesting stages (90 DAT) by following standard technique (Katznelson et al, 1948).…”

A Study of Polysaccharide‐producing Organisms Occurring in the Root Region of Certain Pasture Grasses

“…The litera- Katznelson, Lochhead, and Timonin (1948)) Clark (1949) and Starkey (1958). One aspect which has received scant attention is the incidence of organisms capable of producing polysaccharides in the root re ion of plants.…”