PhD in Plant and Soil Science - Soil Science in Lubbock United States | Texas Tech University

The Plant and Soil Science doctoral program mandates 60 graduate credit hours post-bachelor's degree plus 12 dissertation credits, culminating in 72 total hours. Students can specialize in crop protection, crop science, fibers and biopolymers, horticulture, or soil science, selecting their focus during the preliminary examination. Should this initial assessment identify gaps in foundational knowledge, the graduate faculty may assign additional preparatory coursework. The advisory committee guides students on language prerequisites and fundamental science requirements. Ph.D. candidates must complete comprehensive written and oral exams administered by their graduate committee to evaluate their specialized expertise, broad understanding of related fields, grasp of scientific methodology, and capacity for clear, scholarly communication.



Departmental Ph.D. candidates undergo rigorous written and oral qualifying exams designed by their graduate committee to assess their mastery of their chosen specialization, complementary knowledge areas, scientific reasoning skills, and academic presentation abilities. When preliminary admission exams uncover deficiencies, students may need to complete prescribed remedial coursework. The advisory committee provides guidance on language proficiencies and essential scientific foundations.