<%BANNER%>
Sugarcane variety trials during ... crop season.
ALL VOLUMES CITATION SEARCH THUMBNAILS PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00076924/00001
 Material Information
Title: Sugarcane variety trials during ... crop season.
Physical Description: Serial
Creation Date: 1965
 Subjects
Genre: serial   ( sobekcm )
 Record Information
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
System ID: UF00076924:00001

Full Text

Everglads Station Mimeo Report EES66-10 April, 1966

Sugarcane Variety Trials During 1965-1966 Crop Season

F. le Grand*


During the 1965-66 crop season several sugarcane variety trials were har-
vested, some as plant crop and others as first stubble. The results as plant
crop for the latter were reported in Mimeo Report EES65-11.

Plant crop trials with early and with later maturing varieties were harvest-
ed at Florida Sugar Corporation and floore Haven Cooperative, growing on Everglades
peat and sand of the Delray Series, respectively. Two early maturing varieties,
C.P. 63-635 and C.P. 61-55, were planted in a 5x5 Latin Square design, using
F. 46-136, U.S. 59-16-1, and C.P. 50-28 for comparison. In separate experiments,
also 5x5 Latin Squares, late maturing varieties, C.P. 61-8, C.P. 61-14, C.P. 61-
21, and C.P. 63-634, were tested against the standard Cl. 41-223 in the same
field at both locations.

The trials at Florida Sugar were planted on November 17 and 25, 1964, for
early and late maturing varieties, respectively, receiving 500 pounds of 0-0-50
fertilizer mixture with 1 percent CuO, 1 percent ZnO, 1.5 percent MnO, and 0.5
percent B 0 at planting time. The trials at Moore Haven were both planted on
December 21, 1964. Fertilizer at the rate of 650 pounds of 0-6-45 with one per-
cent CuO, 0.5 percent ZnO, 1 percent MnO, and 0.5 percent B203 was applied at
planting time. In addition two applications of 100 pounds of urea each were ap-
plied as a top dressing when the cane was 2 and 5 months old, respectively.

First ratoon trials were harvested at the former South Florida Sugar Corpora-
tion and at Duda Farms. The latter is a 5x5 Latin Square design comparing F. 46-
136, U.S. 59-16-1, C.P. 50-28, and C.P. 52-68 with C1. 41-223 as standard. The
same varieties were compared with the same standard but in a randomized block de-
sign with four replications at South Florida Sugar Corporation.

At harvest time twenty stalks were taken at random from each plot for juice
analyses. The stalks were processed in a three roller sample mill and the juice
was analysed for percent brix, polarization and purity. The amount of juice ex-
tracted was expressed as percent on cane weight.

Percent available sucrose in juice was calculated by the Winter-Carp formula.
Sugar production per plot was calculated using the juice extraction and percent
available sucrose in juice.

Cane weight was expressed as tons cane per acre, and juice quality as percent
available sucrose in juice. Sugar production and juice extraction were expressed
in terms of sugar production and extraction = 100 of the standard variety.

Cane tonnage, sugar production, juice extraction and juice quality are re-
ported for each variety trial individually in this mimeo report. Results were
calculated statistically using the Duncan's Multiple Range Test.


* Assistant Sugarcane Agronomist, University of Florida, Agricultural Experiment
Stations, Everglades Experiment Station, Belle Glade, Florida.







Plant Crop

1. Location: Florida Sugar Corporation
Object: To test early maturing varieties
Date planted: November 17, 1964
Date harvested: November 30, 1965
Age: 12-1/2 months
Harvesting Results: (1)


Variety Tons cane Percent available On basis of C.P. 50-28 = 100
per acre sucrose in juice Juice Sugar production
extraction per acre

C.P. 63-635 47.5(a) 11.58 106.7 82.5(a)
F. 46-136 48.2(a) 11.62 110.8 88.5(a)(b)
U.S. 59-16-1 52.0(a) 14.07 114.7 116.6 (b)
C.P. 61-55 53.2(a) 12.30 87.4 79.8(a)
C.P. 50-28 61.1 (b) 11.68 100.0 100.0(a)(b)
n.s.(2) n.s.



2. Location: Moore Haven Sugar Cooperative
Object: To test early maturing varieties
Date planted: December 21, 1964
Date harvested: December 2, 1965
Age: 11-1/2 months
Harvesting Results:

Variety Tons cane Percent available On basis of C.P. 50-28 = 100
per acre sucrose in juice Juice Sugar production
extraction per acre

C.P. 63-635 14.4(a) 13.74(a) 114.8 86.5(a)
C.P. 50-28 18.6(a) 14.01(a)(b) 100.0 100.0(a)
C.P. 61-55 33.9 (b) 15.09(a)(b) 93.0 181.0 (b)
F. 46-136 37.4 (b) 15.31 (b) 102.2 223.2 (b)(c)
U.S. 59-16-1 40.3 (b) 14.06(a)(b) 119.6 259.7 (c)
n.s.


(1) Any values in the tables not followed by the same letter are significantly
different at the 5% level.

(2) N.S. means that values in the column were found to be not significantly
different at the 5% level.





-3-


3. Location: Florida Sugar Corporation
Object: To test late maturing varieties
Date planted: November 25, 1964
Date harvested: December 17, 1965
Age: nearly 13 months
Harvesting Results:


Percent available
sucrose in juice


On basis
Juice
extraction


Cl. 41-223 = 100
Sugar production
per acre


C.P. 61-21
C.P. 63-634
C.P. 61-8
C.P. 61-14
Cl. 41-223



4. Location:
Object:
Date planted
Date harvest
Age:
Harvesting I


23.7(a) 12.54(a) 94.7(a) 44.0(a)
29.5(a)(b) 14.66(a)(b) 94.1(a) 63.8(a)(b)
34.1 (b)(c) 14.37(a)(b) 79.0 59.8(a)(b)
40.2 (c) 15.11 (b) 92.4(a) 86.6(a)(b)
43.3 (c) 14.94 (b) 100.0 100.0 (b)



Moore Haven Sugar Cooperative
To test late maturing varieties
1: December 21, 1964
:ed: December 22, 1965
12 months
Results:


Variety Tons cane Percent available On basis Cl. 41-223 = 100
per acre sucrose in juice Juice Sugar production
extraction per acre

C.P. 61-21 11.0(a) 14.52 88.0 24.7(a)
C.P. 63-634 27.6 (b) 13.98 100.0(a) 67.2(a)(b)
C.P. 61-8 32.0 (b)(c) 14.58 97.9(a) 78.9 (b)(c)
C.P. 61-14 36.8 (c)(d)15.18 101.2(a) 96.7 (b)(c)
Cl. 41-223 39.4 (d)14.73 100.0(a) 100.0 (c)
n.s.



Stubble Crop

1. Location: Duda Farms
Object: To test stubble performance of U.S. 59-16-1
Date of plant crop harvest: November 4, 1964
Date of harvest of first stubble crop: December 14, 1965
Age: 12-1/2 months
Harvesting Results:

Variety Tons cane Percent available On basis Cl. 41-223 = 100
per acre sucrose in juice Juice Sugar production
extraction per acre

F. 46-136 35.2(a) 16.52 (b) 91.4(a) 96.4(a)
Cl. 41-223 36.9(a)(b) 15.12(a)(b) 100.0(a)(b) 100.0(a)
U.S. 59-16-1 46.7 (b) 14.25(a)(b) 103.9 (b) 119.3(a)
C.P. 52-68 66.7 (c) 13.40(a) 93.5(a)(b) 144.9 (b)
C.P. 50-28 67.6 (c) 14.92(a)(b) 91.4(a) 160.1 (b)


Variety


Tons cane
per acre


*







2. Location: South Florida Sugar Corporation
Object: To test stubble performance of U.S. 59-16-1
Date of plant crop harvest: December 11, 1964
Date of harvest of first stubble crop: December 30, 1965
Age: 12-1/2 months
Harvesting Results:


Percent available
sucrose in juice


On basis Cl.
Juice
extraction


41-223 = 100
Sugar production
per acre


Cl. 41-223
F. 46-136
U.S. 59-16-1
C.P. 52-68
C.P. 50-28


16.4(a)
19.3(a)
24.2
24.4
32.1


(b)
(b)(c)
(c)


14.82
15.74
15.82
14.15
15.54
n.s.


100.0
94.2
100.0
96.1
94.8
n.s.


100.0(a)
116.4(a)(b)
155.4 (c)(d)
134.1 (b)(c)
195.5 (d)


Cane Quality

High cane and sugar production per acre are important factors for a cane
grower. Equally important is the ratio, tons cane per ton of sugar, since a low
value reduces the cost of harvest, cane transportation and milling. The ratio,
tons cane per ton of available sugar in cane, was calculated and is reported in
the following table:

Variety Location Average
Flaa Sugar Corp. Moore Haven Duda S. Fla. Sugar

C.P. 61-8 11.3 12.4 11.8
C.P. 61-14 13.2 11.6 12.4
C.P. 61-21 14.0 13.6 13.8
C.P. 63-634 11.4 12.5 11.9
C.P. 63-635 15.0 12.5 13.7
F. 46-136 14.3 12.6 10.3 11.6 12.2
C.P. 52-68 13.0 12.7 12.8
U.S. 59-16-1 11.7 11.7 11.0 10.9 11.3
C.P. 50-28 16.0 14.0 11.8 11.5 13.3
Cl. 41-223 10.6 12.0 10.4 11.5 11.1


EES66-10
450 copies


Variety


Tons cane
per acre


'- "


--