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Title: Vegetarian
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Title: Vegetarian
Series Title: Vegetarian
Physical Description: Serial
Creator: Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of Florida
Publisher: Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of Florida
Horticultural Sciences Department
Publication Date: August 1996
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Bibliographic ID: UF00087399
Volume ID: VID00316
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.

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*i UNIVERSITY OF Cooperative Extension Service

a FLORIDA Institute of Food and Agricultural Sciences



VEGETARIAN

A Vegetable Crops Extension Publication
horticultural &cicncca Deportaent P.O. 110690 Gaincsvillc, FL 32611 Telephoine 904/392-2134


Vegetarian 96-08


August 15, 1996


CONTENTS


L NOTES OF INTEREST

A. Vegetable Crops Calendar.

II. COMMERCIAL VEGETABLES

A. Tomato Graywall Related to High N Fertilization.

B. 1996 Florida Agricultural Conference and Trade Show.

II. VEGETABLE GARDENING

A. Results: 1996 4-H Congress Horticultural Events.



Note: Anyone is free to use the information in this newsletter.
Whenever possible, please give credit to the authors. The purpose of
trade names in this publication is solely for the purpose of providing
information and does not necessarily constitute a recommendation of
the product.


The Institute of Food and Agricultural Sciences is an Equal Employment Opportunity Affirmative Action Employer authorized to provide research, educational
information and other services only to individuals and institutions that function without regard to race, color, sex, age, handicap or national origin.
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I. NOTES OF INTEREST

A. Vegetable Crops Calendar.

September 4, 1996. Tomato Institute
Program, Ritz Carlton, Naples. Contact
C. Vavrina.


October 1-2, 1996. 1996
Agricultural Conference and Trade
Vegetable Program, Lakeland Civic
Contact George Hochmuth.


Florida
Show,
Center.


II. COMMERCIAL VEGETABLES

A. Tomato Gravwall Related to High N
Fertilization.

Tomato graywall can be a major
problem in winter growing seasons with more than
50% losses reported at times. It sometimes has
been associated with low temperatures, low
potassium, "out-of-balance" nitrogen and
potassium, cloudy weather, potassium deficiency,
bacterial infection, etc. Some fertilizer
demonstration studies with tomato had indicated
high fertilizer, especially nitrogen might be
associated with graywall.


This past winter, a study was conducted by
Juan Carranza (Biologist), Steven O'Hair, George
Hochmuth, Herb Bryan, and Ed Hanlon to evaluate
effects of N and K fertilization of drip-irrigated
tomato in Dade County on rockland soil. Nitrogen
rates were 0, 75, 150, and 225 lb N per acre and
potassium rates were 0, 50, 100, and 150 lb K20
per acre.
Soil tests showed a medium concentration
of K in the soil but there were no yield responses to
K fertilization. In addition, fruit graywall was not
affected by K fertilization (Table 1). Yield was
maximized with 150 lb N per acre, the
recommended rate. Graywall was increased with
N fertilization, especially as N rate increased above
75 Ib per acre.
Some individuals recommend high K
relative to N to reduce tomato fruit disorders such
as graywall and blotchy ripening. Our data clearly
show that it is not the ratio that counts but the rate
of nutrient. Furthermore, N is more important than
K. High N increases graywall while not
increasing yield.


Table 1. Effects of N and K on tomato fruit yield and graywall, Homestead, winter, 1995-96.
N K20 Total large Total Mkt. Graywall Cull
lb/acre 25-lb cartons/acre
0 503 939 7 242
75 1077 1783 31 566
150 1197 1901 38 575
225 1193 1904 34 578
signif. ** ** **
0 867 1453 25 451
50 1042 1743 33 525
100 1024 1666 27 501
150 1037 1666 24 485
signi fNS NS NS NS
(Hochmuth, Vegetarian 96-08)












1996 FLORIDA AGRICULTURAL
CONFERENCE AND TRADE SHOW
VEGETABLE PROGRAM

LAKELAND CIVIC CENTER,
LAKELAND, FL

SESSION 1
Tuesday, October 1
ORGANIC VEGETABLE PRODUCTION
Moderator: Mr. Ken Shuler, Palm Beach County
Cooperative Extension Service, IFAS, West Palm
Beach, FL

8:00 am Introduction to Organic Vegetables Mr.
Gary Brinen, Alachua County Cooperative
Extension Service, IFAS, Gainesville, FL

8:15 am Organic Vegetable Production: Dealing with
in Florida Conditions Mr. Obi Donohue,
President, King Bee Organics, Sarasota, FL

8:45 am Marketing and Sourcing Organic Vegetables
from Florida Mr. Chris Bell, President,
Internatural Marketing, Inc., Lake Worth, FL

9:15 am Pest Management in Organic Vegetable
Production Systems Dr. Tom Kucharek,
Extension Plant Pathologist, Plant Pathology
Department, IFAS, Gainesville, FL

9:45 am Panel Discussion

10:30 am Adjourn Visit Trade Show

SESSION 2
Tuesday, October 1
CERTIFIED CROP ADVISOR

2:00 pm Introduction Dr. Ed Hanlon, Soil and Water
Science Department, IFAS, Gainesville, FL

2:15 pm Details on the CCA Program in Florida Mr.
Andy Levigne, Florida Agricultural Chemicals
Association, Winter Haven, FL

2:45 pm Practice Exam Questions and Problems Dr.
Ed Hanlon, Mr. Andy Levigne


3:45 pm Questions and Answers


4:00 pm Adjourn Visit Trade Show

SESSION 3
Wednesday, October 2
WATERMELON AND OTHER CUCURBITS
Moderator: Mr. Bob Hochmuth, Suwannee Valley
Research and Education Center, IFAS, Live Oak,
FL

8:00 am News in Cucurbit Varieties Dr. Don
Maynard, Gulf Coast Research and Education
Center, IFAS, Bradenton, FL

8:30 am Update on Cucurbit Diseases Dr. Tom
Kucharek, Plant Pathology Department,
IFAS, Gainesville, FL

9:00 am Row Middle and Double Crop Weed
Control Dr. Jim Gilreath, Gulf Coast
Research and Education Center, IFAS,
Bradenton, FL

9:30 am Fertilization of Drip-Irrigated Melons Dr.
George Hochmuth, Horticultural Sciences
Department, IFAS, Gainesville, FL

10:00 am Questions and Answers

10:30 am Adjourn Visit Trade Show

(Hochmuth, Vegetarian 96-08)

III. VEGETABLE GARDENING


A. Results
Horticultural Events.


;: 1996 4-H Congress


The following is a report on four major
horticultural events conducted during State 4H
Congress on The University of Florida campus, the
week of July 29 August 1, 1996.

a) 4-H Horticulture Curriculum our
4-H horticulture committee met to review the newly
written and revised 4-H Plant Connections
curriculum materials, which includes horticulture
as its major focus.
The writer is Janice Easton who works for
Glenn Israel, and the project director is Debbie












Glauer of Family and Youth Sciences; they have
put together the following six lessons (with
supporting activities):
Lesson 1. What is a plant?
Lesson 2. Why are plants important?
Lesson 3. What makes plants grow?
Lesson 4. How to grow plants.
Lesson 5. How to select and handle plants.
Lesson 6. The future in plants.

This new curriculum will be pilot tested
with 9-11 year old 4-H Youth in 3 or 4 Florida
counties this fall. If you or your 4-H constituents
wish to participate in this pilot project, please get
in touch with me or Debbie Glauer.

b) 4-H Horticulture Hort Track a total of
37 4-H youth participated in this two-day track of
classes featuring horticultural subjects. In one
class the youngsters reclaimed an old 60x60 ft herb
garden from the weeds and over-grown mint, then
re-established 8 very attractive herb plots named
by the kids as following:
"Herbs-R-Us"
"Dinks Darlings Herbs"
"Spanky's Spices"
"The Hot Plot"
"Good Thyme Garden"
"Herbal Essence"
"The Ginger Mint"
"Sour Puss Herb Garden"


c) 4-H Plant Connections Demonstrations -
here are the placings in this state finals event:

1. Marion Co. Ashley Dobbs and Jenni Upton.
"The Fabulous Fern". (team represents Fla. In Dallas,
NJHA, October.)

2. Santa Rosa Co. Katie Mullins. "The Core of
Grafting".

3. Broward Co. Richard March. "Grafting".

4. Union Co. Julia Cannon. "Propagating a Plant".

5. Hillsborough Co. Natasha Walden "Creating a
Dish Garden."

6. Seminole Co. Jason Quisenberry. "Vegetable
Gardening."


7. Citrus Co. Jeremy Allen.
Watermelons."


"Growing


Awards: Provided by FFVA, Clonts Farms, and
Zellwin Farms.

d) 4-H Horticulture Judging and Identification
Contest Six county teams competed in this state
finals event. Contestants had to identify 140
individual plant specimens, plus judge 8 classes of
fruits, vegetables, and ornamentals, set up by Jeff
Williamson, Jim Stephens, and Bob Black. The
Marion Co. Team wins a trip to NJHA, Dallas, TX,
Oct, 1996, sponsored by FFVA, Clonts Farm, and
Zellwin Farms.


(Stephens, Vegetarian 96-08)

Prepared by Extension Vegetable Crops Specialists


Dr. G. J. Hochmuth
Professor


Dr. D. J. Cantliffe
Chairman


Dr. S. M. Olson
Professor


Mr. J. M. Stephens
Professor


Dr. S. A. Sargent
Assoc. Professor & Editor


Dr. C. S. Vavrina
Assoc. Professor


Dr. D. N. Maynard
Professor


Dr. W. M. Stall
Professor


Dr. J. M. White
Assoc. Professsor




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