Publications in VIVO

Co-author Network

Co-investigator Network

Sotomayor-Ramirez, David R.

Faculty Member

Positions

Professor, Agronomy and Soil Sciences Department , College of Agricultural Sciences

Publications
Research
Background
Contact
View All

selected publications

academic article
- Earthworm Communities Along a Forest-Coffee Agroecosystem Gradient: Preliminary Evidence Supporting the Habitat-Dependent Feeding Hypothesis. Tropical Ecology. 54:365-374. 2013
- Evaluacion de la calidad del suelo explotado para la mineria despues de diferentes sistemas de manejo. Terra Latinoamericana . 30:1-11. 2012
- Limnologic conditions at La Plata reservoir in Puerto Rico: 2008 to 2009.. Journal of Agriculture of the University of Puerto Rico. 96:1-22. 2012
- Phosphorus in runoff from two highly weathered soils of the tropics. Journal of Soil Science and Plant Nutrition . 91:267-277. 2011
- Soil fertility evaluation of coffee (coffea spp.) production systems and management recommendations for the Barahona Province, Dominican Republic. Journal of Soil Science and Plant Nutrition . 11:137-150. 2011
- Agronomic performance of common bean (Phaseolus vulgaris L.) lines in an Oxisol. Field Crops Research. 118:264-272. 2010
- Benthic algal diversity and biomass as indicators to establish reference streams in Puerto Rico. Verhandlungen des Internationalen Verein Limnologie. 30:1567-1572. 2010
- Soil aggregation and organic carbon fractions in the Rio Grande de Arecibo watershed. Journal of Agriculture of the University of Puerto Rico. 94:25
  -39. 2010
- Soil organic matter stocks and spatial distribution in the Rio Grande de Arecibo watershed. Journal of Agriculture of the University of Puerto Rico. 94:1-23. 2010
- Tomato (Lycopersicon esculentum) response to fertilizer nitrogen and compost. Journal of Agriculture of the University of Puerto Rico. 94:79-103. 2010
- Evidence for excess dietary phosphorus on dairy farms with rotational grazing and tropical grasses. Journal of Agriculture of the University of Puerto Rico. 93:23-40. 2009
- Land use effects on microbial biomass C, B-glucosidase and B-glucosaminidase activities, and availability, storage and age of organic C in soil. Biology and Fertility of Soils . 45:487-497. 2009
- Phytoplankton dynamics of the Guajataca reservoir, Puerto Rico. Verhandlungen des Internationalen Verein Limnologie. 30:1-5. 2009
- Quality evaluation of slaughterhouse waste compost. Journal of Agriculture of the University of Puerto Rico. 93:223-238. 2009
- Effectiveness of grass filter strips for runoff nutrient and sediment reduction in dairy sludge-amended pastures. Journal of Agriculture of the University of Puerto Rico. 92:1-14. 2008
- Erosion and nutrient loss reduction with an alternative planting method for coffee (Coffea arabica). Journal of Agriculture of the University of Puerto Rico. 92:153-169. 2008
- Influence of season and stocking rate on pasture herbage availability and milk yield. Journal of Agriculture of the University of Puerto Rico. 92:15-26. 2008
- Limnological assessment of two reservoirs in Puerto Rico. Verhandlungen des Internationalen Verein Limnologie. 30:1-7. 2008
- Microbial communities and enzymatic activities under different management of semiarid soils. Applied Soil Ecology. 38:279-260. 2008
- Nitrate leaching under different levels of irrigation for three turfgrasses in southern Puerto Rico. Journal of Agriculture of the University of Puerto Rico. 92:135-152. 2008
- Tracking human faecal contamination in tropical reservoirs in Puerto Rico. Lakes and Reservoirs: Research and Management.. 13:301-317. 2008
- An index approach to assess nitrogen losses to the environment. Ecological Engineering. 32:108-120. 2007
- Nutrient concentrations in runoff from different manure amended fields of the tropics under natural rainfall conditions. Journal of Agriculture of the University of Puerto Rico. 91:101-105. 2007
- A decade of change in nutrient management. A new nitrogen index. Journal of Soil and Water Conservation . 61:62A-71A. 2006
- Enzyme activities as affected by soil properties and land use in tropical watershed. Applied Soil Ecology. 35:35-45. 2006
- Microbiological surface-water quality of the Rio Grande watershed, Puerto Rico. Caribbean Journal of Science . 42:151-163. 2006
- Off-field transport of phosphorus from an Ultisol under pasture. Journal of Agriculture of the University of Puerto Rico. 90:159-172. 2006
- Short-term tillage practices on soil organic matter pools in a tropical Ultisol. Australian Journal of Soil Research . 44:1-7. 2006
- The status of phosphorus and other soil fertility parameters in soils of Puerto Rico. Journal of Agriculture of the University of Puerto Rico. 90:145-157. 2006
- Phosphorus soil tests for environmental assessment in tropical soils. Communications in Soil Science and Plant Analysis. 35:1485-1503. 2004
- Soil conditioner efficacy on sweet corn production. Journal of Agriculture of the University of Puerto Rico. 88:97-108. 2004
- Vegetation influence on soil quality in a highly degraded tropical soil. Journal of Agriculture of the University of Puerto Rico. 88:11-26. 2004
- Application of the Caribbean P index to soils receiving organic amendments. Journal of Agriculture of the University of Puerto Rico. 87:59-64. 2003
- Phosphorus balance on dairy farms of Puerto Rico. Journal of Agriculture of the University of Puerto Rico. 87:59-64. 2003
- Yam (Dioscorea spp.) response to fertilization in soils of the semiarid southern coast of Puerto Rico. Journal of Agriculture of the University of Puerto Rico. 87:91-103. 2003
- Interpretations of field fertility research on solanacea in Puerto Rico. Journal of Agriculture of the University of Puerto Rico. 86:95-116. 2002
- Phosphorus status of stream waters in Puerto Rico: 1989-1997. Journal of Agriculture of the University of Puerto Rico. 85:1-15. 2001
- Chloride uptake by tropical forage grasses in two soils of Puerto Rico. Journal of Agriculture of the University of Puerto Rico. 84:133-142. 2000
- K values of soils of U.S. Virgin Islands. Journal of Agriculture of the University of Puerto Rico. 84:185-187. 2000
- Anaerobic soil management practices for nematode control in Florida. Nematropica. 29:153-170. 1999
- Soil air carbon dioxide and nitrous oxide concentrations in profiles under tallgrass prairie and cultivation. Journal of Environmental Quality . 28:784-793. 1999
- Carbon and nitrogen mineralization in tallgrass prairie and agricultural soil profiles. Soil Science Society of America Journal . 62:942-951. 1998
- Biological properties of soil and subsurface sediments under abandoned pasture and cropland. Soil Biology and Biochemistry Journal. 28:837-846. 1996
- Denitrification in soil profiles beneath grassland and cultivated soils. Soil Science Society of America Journal . 60:1822-1828. 1996
- Methane flux from mangrove sediments along the southwestern coast of Puerto Rico. Estuaries. 17:140-147. 1994
- Release of 'Henorico' rhizoma perennial peanut (Arachis glabrata Benth.).. Journal of Agriculture of the University of Puerto Rico. 81-85.
article
- Benthic algal diversity and biomass as indicators to establish reference streams in Puerto Rico. Verh. Internat. Verein. Limnol.. 1567-1572. 2010
- Phytoplankton dynamics of the Guajataca reservoir, Puerto Rico. Verh. Internat. Verein. Limnol.. 1-5. 2009
- Limnological assessment of two reservoirs in Puerto Rico. Verh. Internat. Verein. Limnol.. 1-7. 2008
conference paper
- Nutrient Management and Sediment Source Identification in Lajas Valley Agricultural Reserve and Guanica Watershed. 66. 2013
- Caribbean phosphorus index validation and management practices evaluation on fields under manure applications. American Society of Agricultural and Biological Engineers. 2009
- Impact of coffee management practices on the soil ecosystem: Earthworm community function. 356-364. 2008
- Nutrients in dairy manure sludge in Puerto Rico. Management and implications. 347-355. 2008
- Soil biological community structure in coffee (Coffea arabica L.) agroecosystems. 333-345. 2008
- New fertigation recommendations for cassava on non-traditional production system 2006
- Effect of season and stocking rate on pasture availability to dairy cows supplemented with concentrates. Asociacion Latinoamericana de Produccion Animal. 2005
- Production and evaluation of compost as an alternative to reduce slaughterhouse wastes in Puerto Rico. U.S. Compost Council Annual Meeting. 2005
- Reservas de carbono organico y sus fracciones en suelos de la cuenca del Rio Grande de Arecibo, Puerto Rico.. XVII. Congreso Venezolano de la Ciencia del Suelo. 2005
- Dinamica de nutrientes y aportaciones anuales en aguas superficiales de micro cuencas rurales tropicales. Congreso Latinoamericano de la Ciencia del Suelo. 2004
- Estimacion de las perdidas de fosforo bajo simulacion de lluvia en un Ultisol. VI Congreso Latinoamericano y del Caribe de IngenierÃa AgrÃcola. 2004
- Influencia de practicas de labranza sobre el establecimiento de pastos tropicales y propiedades biologicas de un Ultisol. Congreso Latinoamericano de la Ciencia del Suelo. 2004
- Perdidas de fosforo bajo simulacion de lluvia en un Ultisol. Congreso Latinoamericano de la Ciencia del Suelo. 2004
- Phosphorus balance on intensively managed dairy farms of the Caribbean.. 9th World Conference on Animal Production, Porto Alegre Brazil. 2003
- Tomato (Lycopersicon Esculentum Mill.) response to biosolid yard-waste compost 2000
conference poster
- Respuesta del cafe (Coffea arabica L.) a fuentes y niveles de nitrogeno y potasio utilizando fertilizantes especializados. Sociedad Puertorriquena de las Ciencias Agricolas. 2012
- Phosphorous dynamics and associated tropic status of two reservoirs of Puerto Rico . American Society of Limnology and Oceanography, San Juan, PR. 2011
- The nutrient sources impacting the phytoplankton community in two Puerto Rican reservoirs. American Society of Limnology and Oceanography, San Juan, PR. 2011
- The phytoplankton community structure in two Puerto Rican reservoirs of contrasting nutrient status. American Society of Limnology and Oceanography Aquatic Sciences meeting, San Juan, PR. 2011
- Phosphorus persistence in runoff from an Ultisol amended with dairy manure sludge. World Congress of Soil Science. 2010
- Como aplicar nitrogeno en la produccion de forraje en Puerto Rico 2009
- Fertilizer recommendations for dry vean production (Phaseolus vulgaris L.) in an oxisol 2009
- Manejo de nitrogeo y fosforo para la produccion de habichuela (Phaseolus vulgaris L.) en un oxisol. XVIII Congreso Latinoamericano de la Ciencia del suelo. 2009
- Transporte de nutrienes con residuos organicos de vaqueria 2009
- Caracterizacion de nutrientes y sedimentos en escorrentia de suelos enmendados con residuos organicos de vaqueria 2008
- Evaluacion de nitrogeno liquido (ULB-35®) para la produccion de forraje en Puerto Rico 2008
- Respuesta de lineas de habichuela (Phaseolus vulgaris L.) a diferentes niveles de fertilidad de un Oxisol 2008
- Dissolved oxygen dynamics at two reservoirs of Puerto Rico. XXVI Simposio del Departamento de Recursos Naturales y Ambientales . 2007
- Evaluation of benthic algae diversity and biomass as indicators to establish reference streams for water quality monitoring in Puerto Rico. XXVI Simposio del Departamento de Recursos Naturales y Ambientales . 2007
- Evaluation of benthic algal diversity and biomass as indicators to establish reference streams for water quality surveys in Puerto Rico. 30th Congress of the International Association of Theoretical and Applied Limnology. 2007
- Physicochemical dynamics of the Guajataca reservoir, Puerto Rico. 30th Congress of the International Association of Theoretical and Applied Limnology. 2007
- Phytoplankton dynamics of the Guajataca Reservoir, Puerto Rico. XXVI Simposio del Departamento de Recursos Naturales y Ambientales . 2007
- New Fertigation Recommendations for Cassava on Non-Traditional Production System 2006
- Determination of numeric nutrient criteria in reservoirs of Puerto Rico 2005
- Phosphorus mass balance of dairy farms of Puerto Rico 2005
- Rhizoma perennial peanut: does it need mineral fertilization to optimize yield? 2005
- Uso del modelo EPIC para predecir el transporte de sedimentos y nutrientes de un suelo con aplicacion de enmiendas organicas e inorganicas. Sociedad Puertorriquena de las Ciencias Agricolas. 2005
- Descargas nutricionales de la cuenca de Mayaguez. 10th Drinking Water Seminar, PR Water Resources and Enviromental Research Institute . 2004
report
video
- Phosphorus persistence in runoff from an Ultisol amended with dairy sludge 2010

presentations