Facultad

Prof: Daniel Herrera D
Nacionalidad: Costa Rica

Academic preparation:

Ph.D. Soil Fertility and Plant Nutrition, August-2007
Soil and Water Science Dept., University of Florida :
Dissertation: Dietary Manipulation to Dairy Cows to Minimize Phosphorus Solubility in Manure and Manure-Amended Soils
Minor: Dairy Science Nutrition.

M. Sc. Soil Fertility . December-2003
Soil and Water Science Dept. University of Florida.
Thesis: Relationship among Mehlich-1, Mehlich-3 and Water Soluble Phosphorus in Manure Amended, Inorganically Fertilized and Phosphatic Soils.
Minor: Dairy Science Nutrition

BS. Agriculture and Natural Resource Management. Universidad EARTH, Costa Rica 1997

Actual interests:

• Soil fertility and plant nutrition optimization for tropical crops
• Sustainable management of forages' nutrition as the bases for tropical livestock production
• Soil acidity management and its impact in plant nutrient uptake efficiency
• Options to manage physic-chemical conditions in the rhizosphere and its impact in tropical crop production
• Fertilizantes utilizados en nutrición vegetal y sus reacciones en suelos tropicales
• Breeds (pure and cruces) for milk production in the humid tropics
• Nutrition of the milking cow under tropical conditions
• Continuous improvement of the teaching-learning process

Courses:

PRA 405. Animal Nutrition
Professional Experience

Investigation proyects:

•Herrera, D., W. G. Harris, V. D. Nair, M. Josan, and C. R. Staples. 2010. Effect of dietary modifications of calcium and magnesium on reducing solubility of phosphorus in feces from lactating dairy cows. J Dairy Sci 93(6):2598-2611.

Hererra, D., W.G. Harris, C. Staples, and V.D. Nair. 2006. Changes in phosphorus solubility in dairy manure with changes in cow's diets. ASA/SSSA/CSSA Annual Meeting, November ‘06, Indianapolis, IN.

Hererra, D., C. Staples, W.G. Harris, and V.D. Nair. 2005. Phosphorus release from dairy manure as related to changes in diet and physiological stage. ASA/SSSA/CSSA Annual Meeting, November ‘05, Salt Lake City, UT.

Josan, M.S., V.D. Nair, W.G. Harris, and D. Herrera. 2005. Associated release of magnesium and phosphorus from active and abandoned dairy soils. J. Environ. Qual. 34:184-191.

Hererra, D., R. Mylavarapu, W.G. Harris, and D. R.Rhue. 2003. Relationships Among Mehlich-1, Mehlich-3, and Water-Soluble Phosphorus Levels in Manure-Amended, Inorganically Fertilized, and Phosphatic Soils. ASA/SSSA/CSSA Annual Meeting, November 2003, Denver, CO.

Daniel Herrera D

Universidad EARTH
Apdo. 4442-1000 San José, Costa Rica.
Tel: (506) 2713-0000
Fax: (506) 2713-0001
Email:dherrera@earth.ac.cr