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Title: Vegetarian
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Permanent Link: http://ufdc.ufl.edu/UF00087399/00304
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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 1995
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Bibliographic ID: UF00087399
Volume ID: VID00304
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.

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' UNIVERSITY OF Cooperative Extension Service
WFT ORTDA -------
FLORIDA Institute of Food and Agricultural Sciences



VEGETARIAN

A Vegetable Crops Extension Publication
florutiulturl Sciencea Department P.O. 110690 Gaincavile, FL 32611 Telephone 904/392-2134


Vegetarian 95-8


August 18, 1995


Contents

I. NOTES OF INTEREST

A. Vegetable Crops Calendar.

H. COMMERCIAL VEGETABLES

A. Tomato Fertigation.


m. VEGETABLE GARDENING
A. 4H Horticulture Activities Results 4H Congress, 1995.


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 6, 1995. Tomato Institute,
Ritz Carlton, Naples, FL. Contact C. Vavrina,
Southwest Florida REC, Immokalee.

H. COMMERCIAL VEGETABLES

A. Tomato Fertigation.

We are presently in the process of
summarizing results of work on fertigation
programs with tomato conducted at Quincy
(Fred Rhoads and Steve Olson) and
Gainesville (George Hochmuth, Sal Locascio,
and Ed Hanlon). The research involved testing
treatments of various amounts of preplant N
(with K at Gainesville) including 0,40, and
100% and testing several injection schedules
(even amounts over 6 or 12-week periods and
injection via the growth curve).

At Gainesville with very sandy soils,
application of 40% N and K preplant resulted
in better yields than no preplant or 100%
fertilizer applied preplant under the mulch. On
heavier soils at Quincy, the 100% preplant
treatment was best one year and there were no
differences for yield among the three
treatments in another year. These results are
not new. We know preplant N is the way to
go on sandy soils but we do not know for sure
what percentage because proportions less than
40% may work as well.

Injection schedule and timing had no
effect on yields. So, once the decision is made
to apply some N preplant, then the remainder
can be injected via the growth curve or in as
few as six weekly injections.


We also evaluated the fertigation
programs for effects on leaf N and K
concentrations and on petiole sap N and K
concentrations. Treatment effects on yield
were related mostly to N nutrition in the plant.
The sap and leaf N and K concentrations were
highly correlated so that petiole sap can be a
good measurement of plant N or K status.

Sap N profiles for the season were
affected mostly by preplant N amount and not
by injection schedule. Therefore, once the
decision is made to apply some N preplant,
then regardless of how the remaining N is
fertigated, the same sufficiency profile can be
used to monitor petiole sap N during the
fertigation period.

Sap N was correlated with yield, but
the correlation was best for the period of 5 to
10 weeks after planting. Therefore, early or
very late-season monitoring probably will be of
little benefit for helping judge plant nutrient
status and predicting final yield. Our research
shows that if the action is not taken by week 8
or 10, then yield response will not happen.

In summary, tomatoes respond to N
fertigation and the specific program should be
tailored to the soil type. Decisions about
preplant N are more important and have more
impact on yield than decisions about what type
offertigation (injection) schedule or plan. Sap
testing for N is a useful, easy, and quick
technique to evaluate plant N status, but
testing should be focused on the period 5 to 10
weeks after planting. A more detailed report
will be available from the 1995 Tomato
Institute Proceedings.

(Hochmuth, Vegetarian 95-08)











I. VEGETABLE GARDENING

A. 4H Horticulture Activities Results 4 H Congress, 1995.


1. "Plant Connections" Demonstration.


Individuals


Placing of Presentations


Name
Carrie Ham
Cindy Clark
Joshua Durr
Jody Paradis
Teresa Thomas


County
DeSoto
Marion
Escambia
Lake
Hillsborough


Title
The Cycle of Forage
Plant Propagation
Using Plant Pesticides Safely
Plant Propagation
Plants Poisonous to Cattle


Teams
1. Jana Adams and
Suzanne Stancil
2. Amber Grigsby and
Fawn Grigsby
3. John Lucas and
Jonathan Nosavahn

Overall
Jana Adams and
Suzanne Stancil


Marion

Hendry

Volusia



Marion


Budding Citrus

Tropical Soda Apple

Parts of Aspidistras



Budding Citrus


When: Thursday, July 27, 1995
Time: 9:00 A.M. until completed
Where: Room 357, JWRU
Judges: Jackie Host, (Ornamentals greenhouse manager)
Cathy Kelly (Horticulture biologist)
Kenda Woodburn (Chestnut Hill Nursery)
Specialist in charge: Jim Stephens, Horticultural Sciences Dept.
Awards: Individual (1st, 2nd, 3rd) Plaques
Team (1st, 2nd, 3rd) Plaques
Overall Best Demonstration Trip to national contest at National Junior Horticultural
Association Convention, Niagara Falls, NY, Oct. 27-31, 1995.









3

2. 4H Horticulture Identification and Judging Contest 1995 State Finals Results

Ten county teams competed in the contest, which was won by Marion County, coached by
agent Bob Renner. The second place team was from Clay County, coached by Ray Zerba and 3rd
place was Orange Co., coached by Tom Wichman. The team placings are as follows:


Place

1


County
Marion


Name

Jenni Upton**

Tori Lundock***

Ashley Dobbs

Jay Deen

Ben Pourcian

Mike Griggs*

Josh Shramo

Aimee Huskey
Meriah Bradshaw

Kevin Floyd

Jennifer Rawlings

Bonnie Etgerton

Troy Gonzalez

Chris Jordan

Robbi Wehrwein

Cheryl Anderson

Taylor Boydston

Anton VanBuskirk

Elaine Vivoni

Michelle Peters

Jennifer Clarkson

Christy Biggy

Patrick Haley


Individual Score

795.00

753.00

647.00

693.75

527.25

805.75

609.25

513.00

391.75

459.25

735.75

494.50

566.00

244.25

481.75

511.25

434.25

365.25

583.00

159.75

427.75

526.00
570.00


Team Score
2241.75






1942.25






1586.75




1542.25






1528.50






1523.75


Clay


Orange




Hendry


Duval


Sarasota











Place County


Putnam


Volusia


Manatee


10 Santa Rosa


Indiv. Nassau

Indiv. Hendry


Heather Allen

Jessica Taylor
Darius Trunk

Desiree Mathe

Kris Schultz
Adam Schwarz

Teresa Schwarz

Michael Savery

Larry Betts

Eric Theilen

Karen Smith

Gary Graf


Casey Bryan


Katie Mullins

Ashley Moore

Nicole Hancock

Kadie Massengale

Matthew Gaozalez


*First Place Individual
**Second Place Individual
***Third Place Individual


The sweep of these two horticultural
events by Marion County means Florida will
be represented by Marion County youth at the
National Junior Horticultural Association
Convention at Niagra Falls in October.
Marion County also had 12 out of the 33 4-H
youth participating in the Horticulture


Leadership Training Track held during 4H
Congress. It appears Marion County has laid
down the challenge to other counties to reach
for excellence in the area of horticulture.


1442.25


1180.75


350.25

575.50

516.50

326.00

266.75
349.00

342.25

489.50

246.00

175.25

579.25

344.75

55.00

481.00

410.00

199.50

366.50

389.75


1170.00


1090.50


Individual Score


Team Score


Name










A Group Horticulture Track 4H State Congress


r6 .


.67


-a


(Stephens, Vegetarian 95-08)


Prepared by Extension Vegetable Crops Specialists


Dr. D. J. Cantliffe
Chairman



Dr. S. M. Olson
Assoc. Professor



Mr. J. M. Stephens
Professor


Dr. G. J. Hochmuth
Professor



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



Dr. C. S. Vavrina
Assoc. Professor


Dr. D. N. Maynard
Professor



Dr. W. M. Stall
Professor



Dr. J. M. White
Assoc. Professor




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