Publication:
Efecto de plantas cobertoras sobre las propiedades biológicas y químicas de tres suelos agrícolas de Puerto Rico
Efecto de plantas cobertoras sobre las propiedades biológicas y químicas de tres suelos agrícolas de Puerto Rico
Authors
Charriez-Rosado, Yanuel A.
Embargoed Until
Advisor
O'Hallorans-Castillo, Julia M.
College
College of Agricultural Sciences
Department
Department of Crops and Agro-Environmental Sciences
Degree Level
M.S.
Publisher
Date
2021-05-13
Abstract
Promover salud de suelo en suelos agrícolas es importante cuando se
quiere conservar los recursos naturales. En los últimos años, en Puerto Rico, se ha
evidenciado un aumento en interés en el uso de plantas cobertoras. Mientras que
en P.R existe muy poca información sobre su uso y beneficios en nuestro
ecosistema, en otros lugares del mundo estudios sugieren que las plantas
cobertoras pueden beneficiar ciertas propiedades químicas, físicas y biológicas en
el suelo. Con el propósito de evaluar el efecto de tres especies de plantas
cobertoras sobre varias propiedades biológicas y químicas en suelos agrícolas en
Puerto Rico, se estableció un experimento en la Subestación Experimental
Agrícola de Gurabo. La serie de suelo fue Montegrande (Very-fine, mixed,
superactive, isohyperthermic Chromic Hapluderts). Se evaluaron las especies
Geophila macropoda, Canavalia ensiformis y Tagetes erecta en un diseño
experimental de bloques completos aleatorizados (DBCA) con cuatro repeticiones.
Los parámetros evaluados fueron pH, conductividad eléctrica, fósforo disponible,
materia orgánica, enzima deshidrogenasa (DHA) y poblaciones de nematodos.
Los resultados demostraron diferencias significativas entre plantas cobertoras para
las poblaciones de nematodos. Se pudo observar que las especies C. ensiformis y
T. erecta presentaron mayores poblaciones de nematodos de vida libre en
comparación a la G. macropoda y el control. No se encontraron diferencias
significativas en pH entre los tratamientos. Sin embargo, se observó una
diferencia significativa entre la conductividad eléctrica del suelo control y del
suelo tratado con T. erecta.
Promoting soil health in agricultural soils is a priority when conserving the natural resources. In recent years, there has been an increased interest in the use of cover crops in Puerto Rico. While in Puerto Rico there is very little information about their use and benefits in our ecosystem, elsewhere studies suggest that cover crops can benefit certain chemical, physical and biological properties in the soil. To evaluate the effect of three species of cover plants on various biological and chemical properties in agricultural soils in Puerto Rico, an experiment was established at the Agricultural Experiment Sub Station of Gurabo. Geophila macropoda, Canavalia ensiformis and Tagetes erecta, were evaluated in a complete randomized blocks experimental design (CRBD) with four replications. The soil series was Montegrande (Very-fine, mixed, superactive, isohyperthermic Chromic Hapluderts). The parameters evaluated were pH, electrical conductivity, available phosphorus, organic matter, enzyme dehydrogenase (DHA), and nematode populations. The results showed significant differences between cover plants for nematode populations. It was observed that the species C. ensiformis and T. erecta presented higher populations of free-living nematodes compared to the G. macropoda and the control treatment. There were no significant differences in pH among the treatments. However, a significant difference was observed between the electrical conductivity of the control soil and the soil treated with T. erecta.
Promoting soil health in agricultural soils is a priority when conserving the natural resources. In recent years, there has been an increased interest in the use of cover crops in Puerto Rico. While in Puerto Rico there is very little information about their use and benefits in our ecosystem, elsewhere studies suggest that cover crops can benefit certain chemical, physical and biological properties in the soil. To evaluate the effect of three species of cover plants on various biological and chemical properties in agricultural soils in Puerto Rico, an experiment was established at the Agricultural Experiment Sub Station of Gurabo. Geophila macropoda, Canavalia ensiformis and Tagetes erecta, were evaluated in a complete randomized blocks experimental design (CRBD) with four replications. The soil series was Montegrande (Very-fine, mixed, superactive, isohyperthermic Chromic Hapluderts). The parameters evaluated were pH, electrical conductivity, available phosphorus, organic matter, enzyme dehydrogenase (DHA), and nematode populations. The results showed significant differences between cover plants for nematode populations. It was observed that the species C. ensiformis and T. erecta presented higher populations of free-living nematodes compared to the G. macropoda and the control treatment. There were no significant differences in pH among the treatments. However, a significant difference was observed between the electrical conductivity of the control soil and the soil treated with T. erecta.
Keywords
Plantas cobertoras,
Cover crops,
Salud de suelo,
Soil health,
Suelos agrícolas
Cover crops,
Salud de suelo,
Soil health,
Suelos agrícolas
Usage Rights
Persistent URL
Cite
Charriez-Rosado, Y. A. (2021). Efecto de plantas cobertoras sobre las propiedades biológicas y químicas de tres suelos agrícolas de Puerto Rico [Thesis]. Retrieved from https://hdl.handle.net/20.500.11801/2771