FLORIDA AGRICULTURAL EXTENSION SERVICE
UNIVERSITY OF FLORIDA
'. INSTITUTE OF FOOD AND AGRICULTURAL SCIENCES
'Vegetable Crops Depairtment
No. 50 VEGETARIAN
University of Florida
March 16, 1960
TO: COUNTY AGENTS
Topics Covered In This Issue Are:
I AG. CHEMICALS NOTES OF CURRENT INTEREST
II SUMMERR SCHOOL VEGETABLE CROPS SHORT COURSE
III FIELD DAYS DATES, TIMES AND PLACES OF THOSE
I AGRICULTURAL CHEMICALS
A. New Food and Drug Regulation, Public Law 86-139,, covering growth regulators,
nematocides fumigants,-rodenticides and other agricultural chemicals not
previously covered by FDA regulations became effective on March 6, 1960.
All stocks of chemicals purchased prior to March 6 should be carefully
checked out by you to make sure you can now use them on each vegetable
Several manufacturers requested and were granted one year usage extensions
for specific chemicals which do not leave a residue on the harvested
Several specific extensions were granted on March 5, 1960, as follows -
2,4-D to intensify red color on potatoes and four growth regulators
for inhibiting sprouting on onions and potatoes.
B. Present stocks of heptachlor with old labels may not be used on vegetable
crops except for soil use only on lima beans, corn, tomatoes and peppers.
Do not apply to foliage of any vegetable crop.
C. Commercial growers should be cautioned on the use of, or allowing the use
of, experimental chemicals on vegetable crops which will be harvested and
sold. There are definite regulations established which must be followed.
The chemical must first have been registered for experimental use and have
a temporary tolerance granted by FDA and must be used only on a small
section of any one block of a crop.
D. Watermelon and other cucurbit seed that are purchased in sealed containers
and treated with thiram and dieldrin will not control rodents and birds.
These two chemicals are only soil insect and disease control and treatments.
The rodent control treatment must be done by the farmer and no seed is
COOPERATIVE EXTENSION WORK IN AGRICULTURE AND HOME ECONOMICS, STATE OF FL.ORIDA
CO LLL L- OF A ;I CIIT.TIRI. 'NIVI.ISITY DL FDLORIDA. UNITED STATES OLPAnTMrNT OF n. CiW Tn r ^ ...
being sold with this treatment already made. See Extension Circular 96C,
Watermelon Production Guide, for exact chemicals and method to use,
E. Diuron was registered for use as a herbicide on sweet corn and potatoes
on February 18, 1960. A residue tolerance of not more than 1 ppm is
F. EPTC -- on sale for restricted use on specific crops.
EPTC is back on the market on a restricted sales basis for specific
vegetable crops. Included in this group are snap and pole beans of
specified varieties and Irish potatoes. Suppliers can furnish details
on how to obtain EPTC, if desired.
Another group of vegetable crops may be treated with EPTC under "Experimental
Use Only"t label. These crops are table beets, sweet corn, staked tomatoes
and sweet potatoes.
Associate Vegetable Crops Specialist
F. S. J nison
Vegetable Crops Specialist
Mason E. Marvel
II SUIhiER SCHOOL VEGETABLE SHORT COURSE
The Vegetable Crops Department is offering a 3-week course in vegetable
production during the 1960 Summer Session at the University of Florida in
Gainesville. Classes begin on June 21st. The course, listed as VC499,
carries l1 semester hours of credit.
The following is an outline of the course:
V.C. 499 Topics in Vegetable Production (Production Principles)
1. General classification of vegetables.
(a) Culture, (b) Hardiness, (c) Botanical
(a) Methods of production, (b) Certified seed, (c) Life
expectation, (d) Dormancy, (e) Storage
3. Plant production
(a) Seed bed, cold frame culture and field production
(b) Hardening of plants
1,Methods and adaptability of plants.
4. Vegetable Soils
(a) Soil adaptability, (b) Management
(a) Methods and principles, (b) Value, (c) Other methods of
6. Fertilization of vegetables
(a) Role of major and minor elements, (b) Fertilizer application
and placement, (c) Inter-relationship with other environ-
7. Response of vegetables to temperature
(a) Vegetative production, (b) Reproductive growth
8. Response of vegetables to daylength
(a) Vegetative growth, (b) Reproductive growth
9. Irrigation and drainage
10. Selection of vegetable varieties for Florida
Laboratory: Field observations of breeding, fertilization and cultural
experiments. Panel discussion on control of plant diseases.
TEAR OFF AND POST
rJ ELD L
FLOR IDA AGRICULTURAL
HASTINGS: Potato Investigations Laboratory
Date Tuesday, March 29, 1960
Time 1:15 P.M.
II4-IOKALEE: South Florida Field Laboratory
Date Thursday, April 28, 1960
Time 1:30 P.M.
BELLE GLADE. Everglades Experiment Station
Date Wednesday, May 4, 1960
Time 9:30 A.M. (and continue into afternoon ---
Box lunches will be available there from
SANFORD: Central Florida Experiment Station
Date Thursday, May 12, 1960
Time 1:30 P.M.
ZELLWOOD: Experiment Station Muck Farm
Date Friday, May 13, 1960
Time 9:00 A.M.
Note: Additional copies of this announcement may be obtained by writing
The Vegetable Crops Department, Gainesville, Florida.