University of Florida

ABE 4413C
Postharvest Operations Engineering

Semester Taught - Spring (odd years)

Catalog Description

Credits: 3

Engineering principles and practices of post harvest operations for the maintenance of quality of agricultural products. Design of systems and facilities


ABE 3612C

Course Objectives

  • To teach students the engineering principles required to handle and store agricultural products after harvest.

Contributions of Course to Meeting the Professional Component for ABET

This course counts for 1 hour of "Engineering Science" and 2 credit hours of “Engineering Design” towards completion of the 55 hour “Professional Requirements” of the undergraduate curricula.

Relationship of Course to Program Outcomes

From the list of (a) through (k) program outcomes listed below, this course addresses the following (a), (c), (e), (h), and (k).

ABET Program Outcomes

  • (a) Apply knowledge of mathematics, science, and engineering
  • (b) Design and conduct experiments, as well as analyze and interpret data
  • (c) Design a system, component, or process to meet desired needs
  • (d) Function on multi-disciplinary teams
  • (e) Identify, formulate, and solve engineering problems
  • (f) Understand professional and ethical responsibilities
  • (g) Communicate effectively
  • (h) Understand the impact of engineering solutions in a global and societal context
  • (i) Recognize the need for, and engage in life long learning
  • (j) Understand contemporary engineering issues
  • (k) Use the techniques, skills, and modern engineering tools necessary for engineering practice


Ray Bucklin
Office: 169 Rogers Hall
Phone: 392-1864 EXT 169

 Material/Supply Fees


Class Materials Required

  • Recommended Reading
  • Henderson, S.M., R.L. Perry, and J.H. Young. Principles of Process Engineering. 4th edition. ASAE 1997
  • Drying Cereal Grains by Brooker and Bakker-Arkema
  • USDA Handbook 66, UC Davis Publication 3311
  • On-Farm Drying and Storage Systems by Loewer, Bridges and Bucklin.

Course Outline

  • Psychrometrics
  • Drying
  • Fans
  • Cleaning and Sorting
  • Size Reduction
  • Materials Handling:  Screw Conveyors
  • Materials Handling:  Bucket Elevators
  • Materials Handling:  Belts and Chutes
  • Materials Handling:  Pneumatic Conveying
  • Postharvest Handling of Fruits and Vegetables
  • Postharvest Handling of Oilseeds
  • Storage of Grains and Oilseeds
  • BioEnergy

Attendance and Expectations

Problems assigned are due in my office by 5 pm on the day specified for full credit (10% deduction/day thereafter.  Maximum deduction is 50%).

Cell phone and musical device use is not allowed during class or lab.


A C- will not be a qualifying grade for critical tracking courses.  In order to graduate, students must have an overall GPA and an upper-division GPA of 2.0 or better (C or better).  Note: a C- average is equivalent to a GPA of 1.67, and therefore, it does not satisfy this graduation requirement.  For more information on grades and grading policies, please visit:

Grading Scale
A 91-100%
B 81-90%
C 71-80%
D 61-70%
E <61%
Grading Method Percentage
Test 1 25%
Test 2 25%
Homework 25%
Final Exam 25%

No make-up exams will be given except for valid medical reasons or unless prior arrangements have been made.

Academic Honesty

As a student at the University of Florida, you have committed yourself to uphold the Honor Code, which includes the following pledge: “We, the members of the University of Florida community, pledge to hold ourselves and our peers to the highest standards of honesty and integrity.”  You are expected to exhibit behavior consistent with this commitment to the UF academic community, and on all work submitted for credit at the University of Florida, the following pledge is either required or implied: "On my honor, I have neither given nor received unauthorized aid in doing this assignment." 
It is assumed that you will complete all work independently in each course unless the instructor provides explicit permission for you to collaborate on course tasks (e.g. assignments, papers, quizzes, exams). Furthermore, as part of your obligation to uphold the Honor Code, you should report any condition that facilitates academic misconduct to appropriate personnel. It is your individual responsibility to know and comply with all university policies and procedures regarding academic integrity and the Student Honor Code.  Violations of the Honor Code at the University of Florida will not be tolerated. Violations will be reported to the Dean of Students Office for consideration of disciplinary action. For more information regarding the Student Honor Code, please see:  

Accommodation for Students with Disabilities

The Disability Resource Center coordinates the needed accommodations of students with disabilities. This includes registering disabilities, recommending academic accommodations within the classroom, accessing special adaptive computer equipment, providing interpretation services and mediating faculty-student disability related issues.

0001 Reid Hall, 352-392-8565,  

Software Use

All faculty, staff and student of the University are required and expected to obey the laws and legal agreements governing software use. Failure to do so can lead to monetary damages and/or criminal penalties for the individual violator. Because such violations are also against University policies and rules, disciplinary action will be taken as appropriate. We, the members of the University of Florida community, pledge to uphold ourselves and our peers to the highest standards of honesty and integrity.

Campus Helping Resources

Students experiencing crises or personal problems that interfere with their general well-being are encouraged to utilize the university’s counseling resources. The Counseling & Wellness Center provides confidential counseling services at no cost for currently enrolled students. Resources are available on campus for students having personal problems or lacking clear career or academic goals, which interfere with their academic performance.

  • University Counseling & Wellness Center, 3190 Radio Road, 352-392-1575,

    Counseling Services
    Groups and Workshops
    Outreach and Consultation
    Self-Help Library
    Training Programs
    Community Provider Database

  • Career Resource Center, First Floor JWRU, 392-1601,