Efecto de aportes superficiales de biomasa vegetal en la temperatura, humedad y dinámica de nemátodos en el suelo en época seca en Santander de Quilichao (Departamento del Cauca)
Effect of superficial contributions of vegetal biomass in the temperature, humidity and dynamics of nematodes in the soil at a season dry time in Santander Quilichao (Department of the Cauca). In the experimental station at CIAT (Santander de Quilichao- Cauca, to 3°06'N and 76°31'W), the effect of surface application of vegetal biomass was explored (6 t dm ha-1 semester-1), after planting of bean. The experiment consisted of four treatments, three cover of the trees that had contrasting characteristics (Calliandra-CAL; Cratylia-CRA and Tithonia - TTH) and the control- CON; arranged in a CBRD with 5 repetitions. The evaluated variables were: environmental (humidity and temperature of the soil) and biological (abundance and dynamics of the nematodes). Under cover the humidity in a 3% was increased and the soil temperature was regulated from the 0.4 to 0.6°C smaller than the CON treatment. The behavior of the nematodes was very dynamic and was related to the environmental conditions, being favored at wet seasons and by the dynamics of decomposition related to the type of material. In general, the cover modified the microenvironment affecting the population of organisms, generating changes in the aireation, structures and nutrients cycling in the soil by contribution of organic matter through mulch which regule its availability in the productive systems.
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Palmira
2006
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| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/210 |
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