278 UNIVERSITY OF FLORIDA

 AY. 528.-Special Problems in Experimental Designs. 2 to 6 credits.
Offered 1, 2, 3.
 AY. 535.-Crop Ecology. 2 hours, and 3 hours laboratory. 3 credits.
Offered 1.
 Effect of soil, moisture, temperature, and other environmental factors on crop
plants, and the ecological distribution of agronomic crops.
 AY. 541.-Crop Nutrition. 1 hour, plus 3 hours laboratory. 2 credits.
Prerequisites: Analytical and Organic Chemistry, Plant Physiology, Soil Fer-
tility, and consent of instructor. Offered 2.
 Recent advances in inorganic nutrition of crop plants, chemical composition and
diagnostic techniques.
 AY. 550.-Research Methods. 2 hours, and 3 hours laboratory. 3 credits.
Offered 1.
 Methods employing basic concepts in scientific experimentation, including the sta-
tistical analysis and presentation of data obtained from field plot, greenhouse, and
laboratory experiments.
 AY. 551.-Design of Experiments. 2 hours, and 3 hours laboratory. 3
credits. Prerequisite: AY. 452, AY. 550, or a course in basic statistics. Of-
fered 2.
 Methods employed in designing scientific experiments; random designs, random-
ized blocks, Latin squares, split plots, crossover designs, factorial researches, covariance
analyses; together with statistical methods for interpreting experimental data.
 AY. 552.-Statistical Analysis and Evaluation of Experimental Designs.
2 hours, and 3 hours laboratory. 3 credits. Prerequisite: AY. 551. Of-
fered 1.
 A continuation of AY. 551 to include an evaluation of the basic assumptions made
for analysis, the application of orthogonal linear sets, the analysis and interpretation of
confounded designs and of various balanced incomplete block designs, and the use of
component analysis in experimental statistics.
 AY. 560.-Cytogenetics. 1 hour, and 3 hours laboratory. 2 credits. Pre-
requisites: Basic courses in genetics and microtechnique and consent of in-
structor. Offered 2.
 A detailed study of the physical basis of genetic variation with emphasis on the
correlation of cytological and genetic concepts.
 AY. 562.-Advanced Genetics. 3 hours. 3 credits. Prerequisites: AY.
329 or equivalent, and consent of instructor. Offered 2.
 An advanced course dealing with genetic concepts, together with their application
to breeding procedures.
 AY. 570.-Research in Agronomy. Credits to be arranged and approved
by the Head of the Department. Offered 1, 2, 3.
 Original work on definite problems with crops, genetics, plant breeding, ecology,
or experimental methods.
 AY. 592.-Graduate Agronomy Seminar. 1 hour. 1 credit. Offered 2.
 Review and discussion of current literature and studies of agronomic problems
relating to crop production, genetics, and plant breeding.

The statement "Offered 1" means offered first semester; 2, second semester; 3, summer session.