1. PhD, Dept. of Agronomy, Univ. of Córdoba, Avda. Menéndez Pidal sn. Apdo 3048, 14080 Córdoba, Spain.
2. Associate Professor, Dept. of Agronomy, Univ. of Córdoba, Avda. Menéndez Pidal sn. Apdo 3048, 14080 Córdoba, Spain.
3. Associate Professor, Dept. of Applied Physics, Univ. of Córdoba, Avda. Menéndez Pidal sn. Apdo 3048, 14080 Córdoba, Spain.