Group Title: Mimeo report - University of Florida Everglades Experiment Station ; 59- 24
Title: Comparison of air-blast and boom sprayer on control of early blight in celery
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Permanent Link: http://ufdc.ufl.edu/UF00067543/00001
 Material Information
Title: Comparison of air-blast and boom sprayer on control of early blight in celery
Series Title: Everglades Station Mimeo Report
Physical Description: 2 leaves : ; 29 cm.
Language: English
Creator: Harrison, D. S ( Dalton Sidney ), 1920-
Thayer, P. L
Everglades Experiment Station
Publisher: Everglades Experiment Station
Place of Publication: Belle Glade Fla
Publication Date: 1959
 Subjects
Subject: Celery -- Diseases and pests -- Control -- Florida   ( lcsh )
Fertilizers -- Application -- Florida   ( lcsh )
Genre: non-fiction   ( marcgt )
 Notes
Statement of Responsibility: D. S. Harrison and P. L. Thayer.
General Note: "May 6, 1959."
General Note: Caption title.
 Record Information
Bibliographic ID: UF00067543
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 65212374

Full Text




Everglades Station Mimeo Report 59-2 M


Comparison of Air-Blast and Boom Sprayer
on Control of Early Blight in Celery

D. S. Harrison and P. L. Thayer


Materials and Methods:
Plot layout is a 3x3 Latin square design. Each of the 9 plots has an area
80 ft. wide x 100 ft. long or 0.183 acre. Rows are spaced on 28-inch intervals.
Utah 57 celery was transplanted on February 15. Fertilizer was broadcast applied
and disked in 2 weeks prior to transplanting, at rates of 3000#/A of 0-16-8 4
0.3% MnO 4 0.3% B203 4 500# S/A.


Application of Sprays:
Two sprayers were
Treatment #1
Treatment 2
Treatment #3


used in application of fungicide:
- Check (no spray application)
- Conventional boom type sprayer
- *Air-Blast sprayer


Sprays were applied on a 4 to 5 day schedule, commencing February 25
ing through May 4, 1959. Rates of application were as follows:


Dates
2/25 '-3716/59

3/24 4/6/59
1I It
4/10/59

4/15 5/4/59
"i 11


Treatment No.
2
3
2
3
2
3
2
3


Material
**Nabam '4 ZnSo4
it It


Rates (Gal./A),
b5
65
70
65
130
65
130
90


* Air-Blast Sprayer furnished by F. E. Myers & Bros. Company, Ashland, Ohio.


** 2 qt. 4 3/4 Ib./lO0 gal. water. The
applied per acre with the air-blast,

Rates, Spraying Time:
Excluding time for refilling, the
swath using only the right side of the I
acres per hour, using both sides. The 1
a total spraying time of 10 acres per h


same amounts of active ingredients were
as was with the boom type sprayer.


Air Blast Sprayer covered 17 rows in one
machine. This would be approximately 27
boom sprayer covered 10 rows per swath or
our, excluding refilling.


Disease incidence:
Early blight ratings were made on April 1, 15 and 25 using Horsfall and
Barratt's scale as3followb: 1 i .-o disease, 2 = 0-3 of plant with disease
symptoms, 3 = 3-6%, 4 = 6-12%, 5 = 12-25%, 6 = 25-50, 7 = 50-75%, 8 = 75-87%,
9 = 87-94%, 10-= 94-97%, 11 : 97-100%, and 12 s 100%. Disease ratings were made
on alternate rows, except in treatment 2 where some rows were cut out for spray
alleys, and are shown in the following table:


and runn-


Pressure
300
100
300
100
300
100
300
100
ioo


May 6, 1959











Row Number
North to South


April
Treatment
1


1
No.*
14


April 15
Treatment No.
1 2 1


April 25
Treatment No.
1 2 3


2.0 1.8
2.2 1.7
2.0 1.8
1.8
2.2 2.3
2.2 2.5
2.3 2.7
2.0 3.2
2.2 3.5
3.5
3.3
2.2 2.7
2.0 2.3
2.2
1.8
1.8 1.8
2.0 1.8


6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2


2.8 3.0
3.0 2.8
3.0 3.2
3.3
3.2 3.7
3.0 4.3
3.0 4.7
3.2 4.8
3.0 4.8
5.0
4.5
3.0 4.0
3.0 3.7
3.5
3.2
2.8 3.0
3.0 3.2


3.0 4.0
3.0 3.5
3.0 3.8
4.3
3.0 5.0
3.2 5.3
3.2 5.7
3.5 5.8
3.0 6.2
6.0
5.5
3.3 5.2
3.5 5.0
4.7
4.2
3.2 3.8
2.2 4.0


* Treatment
Treatment
Treatment


#1
#2
#3


Check
Boom Type Sprayer
Air Blast Sprayer


EES 59-24
250 copies


Belle Glade, Florida


2.8
3.2
3.2
3.8
3.8
4.2
4.2
4.2
4.3
4.5
4.2
4.2
4.3
4.0
4.2
4.2
4.0


1 2 I I III




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