Composted organic matter from the biodegradable fraction of solid urban waste mixed with urban sewage sludge was added in increasingly large doses to two different types of soil: one was pliocenic clay, the other alluvial sandy soil. A particular variety of forage sorghum was cultivated. Analyses were carried out during the vegetative cycle to find the relations among concentration of organic matter, plant development and evolution of certain physiological groups of microorganisms in the sorghum rhizosphere. We also analysed the effect of compost on root development and soil structure in the two soil types used in our experiment.
Effect of organic matter on rhizosphere microorganisms and root development of Sorghum plants in two different soils
VALLINI, Giovanni;
1983-01-01
Abstract
Composted organic matter from the biodegradable fraction of solid urban waste mixed with urban sewage sludge was added in increasingly large doses to two different types of soil: one was pliocenic clay, the other alluvial sandy soil. A particular variety of forage sorghum was cultivated. Analyses were carried out during the vegetative cycle to find the relations among concentration of organic matter, plant development and evolution of certain physiological groups of microorganisms in the sorghum rhizosphere. We also analysed the effect of compost on root development and soil structure in the two soil types used in our experiment.
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