The graduate program in Horticulture & Agronomy offers various degrees. The complete Degree Requirement and Graduate Group bylaws can be found here 

MS Plan I (Thesis)

A miminum of thirty (30) units of upper division and graduate courses and a thesis are required.  At least 12 of the 30 units must be in graduate courses in the major field.  Courses are selected with the advice and consent of the student's Graduate Adviser and the Major Professor who is Chair of the Thesis Committee which is nominated by the Graduate Advisor and officially appointed by the Graduate Dean.  The thesis will be based on experimental research.

MS Plan II (Comprehensive Exam)

A minimum of thirty-six (36) units of upper division and graduate course work and a comprehensive final examination are required.  At least 18 of the 36 units must be earned in graduate courses in the major field; no more than 9 of these 18 may be in research (299) courses.  The group requires a minimum of 6 units of original research with a written report submitted to the Graduate Adviser.  Courses are selected with the advice and consent of the student's Graduate Adviser.  A faculty committee of three (3) is nominated by the Graduate Adviser and appointed by the Graduate Dean to administer the exam. 

MS Study Plan - PDF

Master's Plan II Guidelines

PhD

The Ph.D. program is structured to meet the needs of a diverse student body whose unifying characteristic is an interest in the application of biological principles to the solution of problems in crop production and resource management. Two primary objectives of the curriculum are to foster a sense of community among the students and to provide them with a breadth of knowledge about agronomic and horticultural principles and how they are used in a variety of practices.