1. Microbial communities and enzyme activities in soils under alternative crop rotations compared to wheat-fallow for the Central Great Plains;Acosta-Martínez;Appl. Soil. Ecol.,2007
2. Soil microbial, chemical and physical properties in continuous cotton and integrated crop–livestock systems;Acosta-Martínez;Soil Sci. Soc. Am. J.,2004
3. Soil ciliate species richness and abundance associated with the rhizosphere of different subtropical plant species;Acosta-Mercado;J. Euk. Microbiol.,2004
4. Beinroth, F.N., Engel, R.J., Lugo, J.L., Santiago, C.L., Ríos, S., Brannon, G.R., 2003. Updated taxonomic classification of soils of Puerto Rico, 2002. Bulletin 303. University of Puerto Rico, College of Agricultural Sciences, Agricultural Experiment Station. San Juan, PR, 73 pp.
5. Sulfur in plant materials by digestion with nitric and perchloric acid;Blancher;Soil Sci. Soc. Am. Proc.,1965