Theses and Dissertations - UTB/UTPA

Date of Award


Document Type


Degree Name

Master of Science (MS)



First Advisor

Dr. Jason Parsons

Second Advisor

Dr. Jose Gutierrez

Third Advisor

Dr. Evangelia Kotsikorou


Soil fertility and plant nutrition is crucial for a better yield and consistent harvest in the Rio Grande Valley for local farmers growing citrus trees. A field of oranges and a field of grapefruits were monitored and nutrition deficiencies were noticed that played an important role during fruit set. Soil samples that were taken throughout the year were analyzed via a carbon dioxide extraction method that mimics the way plants naturally take up nutrients or extract nutrients from every soil type. Macronutrients such as the N, P, K, Na, Ca, Mg and some of the micronutrients (Zn, Fe, Mn, and Cu) key role to determine the nutrient status of an orchard and gave us a great indication on deciding what fertilizers are going to be taken into consideration for pre and post-harvest for the following year.


Copyright 2014 Iram Lopez. All Rights Reserved.

Granting Institution

University of Texas-Pan American