Citas bibligráficas
Ticona, B., (2020). Evaluación de las propiedades físicas de un suelo con manejo agroecológico en el valle de Quillota [Tesis, Universidad de Chile]. https://renati.sunedu.gob.pe/handle/sunedu/3431986
Ticona, B., Evaluación de las propiedades físicas de un suelo con manejo agroecológico en el valle de Quillota [Tesis]. CL: Universidad de Chile; 2020. https://renati.sunedu.gob.pe/handle/sunedu/3431986
@mastersthesis{sunedu/3431986,
title = "Evaluación de las propiedades físicas de un suelo con manejo agroecológico en el valle de Quillota",
author = "Ticona Cortavitarte, Berthin Renzo",
publisher = "Universidad de Chile",
year = "2020"
}
Soil degradation implies loss of its functions, affecting its properties. Specifically, compaction is considered most serious environmental problem caused by modern agriculture. Soil eco-intensification is an alternative to this problem and is expressed through agroecological practices. This study was carried out during 2019 and evaluated effect of four agroecological management plus one control on physical properties of a Mollisol in the Quillota Valley (Central Chile). The management was: annual dry cover crop (1-S), deep root perennial cover crop (2-N), annual and perennial cover crop (4-S) and vegetable cover of vegetables and flowers (4- N), in addition to a control, with conventional management (T-0). Four repetitions per management at 3 depths (0-20, 20-40 and 40-60 cm) were evaluated and principal component analysis (ACP) was used to determine some indicators of soil quality. The degradation to which soil was subjected by effect of compaction was reflected in properties related to porosity and soil densification: T-0 presented a higher soil bulk density (Da) and greater soil mechanical resistance than the other treatments; on soil surface, four agroecological managements presented a low Da, which was increasing in depth. Regarding mechanical resistance, 4-N presented low compaction, but also increasing in depth. Due to the short time of treatments establishment, stability of macroaggregates (<1.2 mm) and microaggregates (<30%) was not observed. There were no limitations in hydraulic conductivity, highlighting 1-S for presenting very high values, associated with organic matter contents and a higher amount of gravel. T-0 presented higher values of retained water at 33 kPa and 1500 kPa, but a lower amount of useful water, related to greater compaction. Agroecological management presented higher values of available water and thick pores than T-0. Selected soil quality indicators were: resistance to penetration, available water, water retention to 33 kPa, hydraulic conductivity, fast drainage pores, structural stability index and porosity between aggregates, which will be evaluated every two years.
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
TiconaCortavitarteBR.pdf | Tesis | 1.87 MB | Adobe PDF | ![]() Visualizar/Abrir |
Autorizacion.pdf Acceso restringido | Autorización del registro | 162.76 kB | Adobe PDF | Visualizar/Abrir Solicita una copia |
Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons