Citas bibligráficas
Puertas, F., (2009). Índices de calidad del suelo y parámetros de crecimiento de cultivos de cobertura en una plantación de Cacao (Theobroma cacao L.) [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/4629
Puertas, F., Índices de calidad del suelo y parámetros de crecimiento de cultivos de cobertura en una plantación de Cacao (Theobroma cacao L.) []. PE: Universidad Nacional Agraria La Molina; 2009. https://hdl.handle.net/20.500.12996/4629
@phdthesis{renati/1115905,
title = "Índices de calidad del suelo y parámetros de crecimiento de cultivos de cobertura en una plantación de Cacao (Theobroma cacao L.)",
author = "Puertas Ramos, Fernando Volker",
publisher = "Universidad Nacional Agraria La Molina",
year = "2009"
}
Soil quality is the primary indicator of sustainable management of soils and is considered as a critical component of sustainable agriculture. Cover crops play crucial role in modification of soil quality factors. Therefore, it is important to evaluate the changes in soil quality factors (physical, chemical, biological) under cover crops grown in cacao plantation. Such an evaluation will assist in development of better soil quality indicators to monitor the changes in soil fertility under cover crops. Field experiment was installed at the Research Station of Choclino, San Martin, Peru, to evaluate soil quality factors under cover crops. Five cover crops selected for the study includes: Arachis pintoi Krapov. & W.C. Greg, Calopogonium mucunoides (L.) Callisia repens (Jacq.) L., Canavalia ensiformis (L.) and Centrosema macrocarpum Benth, and treatment with no cover crop was included as control. One year after planting of cover crops the cacao plantation was established. Before planting, one and second year after planting cover crops soil samples were obtained to determine soil quality factors. Growth and nutrient uptake parameters of cover crops (foliar and root biomass, nutrient uptake, decomposition rates of cover crop residues), plant height and stem diameter of cacao plants were evaluated. Based on soil quality factors Additive Soil Quality Index (ASQI) was calculated. Average, nutrient extraction capacity and dry biomass production (12.70 t ha-1) by Centrosema macrocarpum were significantly higher than the other cover crops. Physical, chemical and biological indicators such as bulk density, soil resistance, infiltration, soil temperature, organic matter and phosphorous content, populations of nematodes, bacteria and fungi and the Shannon index were influenced by cover crops through the years. Based on the obtained results it was concluded that best ASQI was achieved under C. repens, C. ensiformis and C. macrocarpum. However these positive changes in soil quality indicators had no significant effects on development of cocoa plants in their early growth, however these ASQI could have significant effects on growth and development of cacao as time progresses.
Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons