Group Title: Rice performance trials ...
Title: Rice performance trials
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Permanent Link: http://ufdc.ufl.edu/UF00054450/00002
 Material Information
Title: Rice performance trials
Series Title: 1984- : Belle Glade research report
Physical Description: v. : ; 28 cm.
Language: English
Creator: Agricultural Research and Education Center (Belle Glade)
Belle Glade AREC
Publisher: Agricultural Research and Education Center, Institute of Food and Agricultural Sciences
Agricultural Research and Education Center.
Place of Publication: Belle Glade, Fla
Publication Date: 1982
Frequency: annual
regular
 Subjects
Subject: Rice -- Varieties -- Field experiments -- Periodicals -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
 Notes
General Note: Description based on: 1982; title from caption.
General Note: Latest issue consulted: 1984?
 Record Information
Bibliographic ID: UF00054450
Volume ID: VID00002
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 40942357
lccn - 2007229086

Full Text
.00 Belle Glade AREC Research report EV-193-2 January, 193
Si 1982 Rice Performance Trials
David B. Jones, Rice \Aronomrist
George H. Snyder, Soil Chemist
S AREC-IFAS
; .... le Glade, Florida 33430
Rice performance trTlaTre conducted at three locations in the Everglades

Agricultural Area (E. A. A.) in 1982. The trials were grown at the following

locations: Seminole Sugar Company, Brida farm, approximately 1 miles east of

Belle Glade; A.R.E.C., 3 miles east of Belle Glade; and Gulf and Western Company,

Okeelanta farn, approximately 20 miles southwest of Belle Glade.

A total of 9 varieties and 4 experimental lines were tested. The 9 varieties

were tested at all three locations, while the 4 experimental lines were tested at

A.R.E.C. only, Table 1. Of the 9 varieties, three (LaBelle, Lebonnet and Mars)

have been commonly grown in the E.A.A., and served as check varieties. Bellemont
and Leah are recently released, short saturated, mid-season long grain varieties.

Three varieties S-201. M-201 and L-201, were from California. LA 110 is a mid-

Sseason, semi-dwarf medium grain variety from Louisiana. LA 110 dees not meet

typical milling or cooking quality standards for rice cultivars grown in the United

States due to chalkiness and high percent amylose of grain endosperm. The intended

use of LA 110 is solely for industrial purposes, primarily as brewers rice to be

grown under contract. Four experimental lines which have shown promise in previous
testing in other states were included at the A.R.E.C. test for the first time this
year.
All tests were drill seeded at a seeding rate of approximately 110 Ibs/A.

Standard cultural practices of the area were used on all tests. The soils in the

E.A.A. have a very high organic matter content (ca. 85%) and therefore no nitrogen

fertilization is required. If flooding is not maintained during the growing season,

oxidation of the organic matter can lead to excessive \M fertility.




-2-
The growing season could be considered near average with regard to temperature,

Appendix Table 1. Rainfall was in excess of average. There were no tropical storms

or hurricanes during the growing season, therefore lodging was not a significant

production factor. Only one variety, LA 110, showed any tendency to lodge, which

it did at all locations.

All plots consisted of G rows spaced 8 inches apart. Four rows were harvested

using a snall plot combine. Plot length varied between locations being 20 ft. at

Seminole, 13 ft at A.R.E.C. and 32 ft at Gulf and Uestern tests.

RESULTS

Seminole

Yields were poor at the Seminole test, averaging only 1932 lbs/A, Table 2.

This was a direct result of the incidence of the blast disease (Pyricularia oryzae).

The variety that had the highest yield, LA 110, also had the lowest disease rating.

This relationship between the amount of disease and yield held over varieties (r2 =

0.75). Therefore, although this test was a poor indicator of potential yield of

the varieties, it was a good indicator of their inherent disease resistance. The

three California varieties S-201, :-201 and L-201 were all very susceptible to blast.

This can be expected of most varieties originating from California since they are

bred and selected in the absence of the disease. It should be noted, however, that

with the proper fungicide program, it is possible these varieties would produce

quite well in Florida. Further testing is needed before these varieties are tried

on a commercial basis.

ilars, the medium grain variety from Arkansas, had good blast resistance and

yielded quite well as a result. Of the long grain varieties, Lebonnet and Leah

yielded the best and had intermediate blast scores. Bellemont, the long grain short

stature variety from Texas, had the highest blast score of the Southern varieties.





-3-

A visual rating was taken of damage to plants caused by the application of the

herbicide propanil. The only variety that had significantly less damage than the

others was Dellernont. This result can be attributed to the slow seedling growth of

Bellemont. Bellemont had less leaf area than the other varieties at the time of

propanil application. Therefore, this score doesn't necessarily reflect superior

tolerance to the herbicide by Bellemont, but rather an avoidance of damage in this

test.

A.R.E.C.

Unlike the Seminole test, the A.R.E.C. test was relatively disease free.

Therefore, the grain yields at this location more closely reflect the actual yielding

abilities of each variety, Table 3. The rean yield for the test was 3991 Ibs/A with

a range from 4847 to 2495 Ibs/A. The California variety, L-210, had the highest

yield with an experimental line, UYN-045, next highest, although the varieties

Lebonnet, Mars, LA 110, Leah, S-201 and the experimental lines UYNF-007, UYN-015,

and UYN-043 all had statistically similar yields. Even though the incidence of blast

was very low at the A.R.E.C. test, the variety I-201 was still affected by the

disease. This indicates the extreme sensitivity of this variety to blast. All four

of the experimental varieties performed well throughout the season, and warrant

further testing. The experimental line UY;I-007 appears particularly promising for

several reasons. Its yield was equal to the standard varieties Lebonnet and Labelle.

It is very early in maturity which is a desirable trait for the ratoon cropping that

is practiced widely in the E.A.A. And finally, it is short statured, an important

trait for a variety grown in an area where lodging frequently occurs.

All varieties and experimental lines had acceptable stand establishment ratings

except for the experimental line UYN-015.






Gulf and Hestern

The yield performance of the varieties tested at the .ulf and eIstern location

was intermediate of the other two test locations, Table %. Again, blast was present

to some degree, indicated by the poor yield of the highly susceptible variety 11-201.

Therefore, as at the Seminole location, varieties having better disease resistance

performed better than the more susceptible varieties. LA110 performed very well

yielding 5885 Ibs/A despite partial lodging in most plots. rlars, also did well,

yielding 4709 Ibs/A. Of the long grained varieties, Lebonnet, Labelle, Leah and

L-201 all performed equally well, having yields better than 3000 Ibs/A.

Stand establishment ratings were taken one week after planting. This early

rating gave more separation between varieties for this character than the six week

rating taken at A.R.E.C. This rating gives a relative comparison of the rapidity

of emergence of the varieties tested. All varieties achieved excellent stands by

the time the permanent flood was applied.

Summary

The summary of yield performance of the nine rice varieties that were tested

at three locations in the E.A.A. is presented in Table 5.

LA 110 ranked first with an overall yield of 4761 lhs/A. This variety had

excellent resistance to blast which partially explains its superior yielding per-

formance. Although LA 110 is sormiewhat shorter than Lebonnet and Labelle, it still

had a tendency to lodge. This is a major disadvantage for this variety. LA 110

is also of limited use because of its grain quality, thus making it useful only as

an industrial variety.

The variety plars ranked second in yield. Hlars is a tall, medium grain, mid-

season variety. liars is a vigorous variety, having good seedling vigor and stand

establishment characteristics as well as excellent lodging and blast resistance. In




_r_

other words, it seems to perform iiell under adverse conditions and will do well

with minimum management input. The riajor disadvantage of liars is that it is a

medium grain variety and therefore has a limited market in the area.

The varieties S-201, Leah, Lebonnet and L-201 all had very similar overall

yields, ranking 3rd, 4th, 5th and Cth, respectively. Lebonnet is already widely

grown in the area and has consistently performed well. It has acceptable blast

resistance and good ratooning capabilities. In the ratoon crop, several commercial

fields of Lebonnet were severely damaged by sheath bliaht (Rhizoctonia solani).

This is something that should be followed closely over the next few years.

Leah is a very promising short stature long grain variety. Resides yielding

well, it has acceptable plant vigor and blast resistance. It also has excellent

lodging resistance. The ratooning ability of this variety is yet unknown. The only

disadvantage of Leah is that it has lower milling yields (% head rice) than Lebonnet

and Labelle. This advantage may be more than compensated for by its superior lodging

resistance.

The California varieties S-201 and L-201 also shoti good yield potential. All

of the California varieties tested are very susceptible to blast, and therefore, if

they are grown, special precautions must be taken to protect them from this disease.

Their regrowth after harvest has also been poor and it is suspected that their

ratoon yields will be lot. But, these varieties are short-seasoned and have excellent

lodging resistance. These facts, combined with high plant crop yield potential,

if managed properly, would make them possible choices for a grower who has a limited

time to produce a rice crop. L-201 is probably more acceptable than S-201 since the

former is a long grained variety, and therefore has a better market potential.

Labelle is ranked 7th with a yield of 230O Ibs/A. The major advantages of

Labelle over Lebonnet is that it is 7-10 days earlier in maturity and has better

milling yields.




-G-

The performance of Bellenont, a short stature lono grained variety, vas dis-

appointing this year. In the past, Bellemont has had yields equal to Labelle and

Lebonnet. This year the incidence of blast ':as greater than it had been in the past.

Since Bellemont seems to have less blast resistance than Lebonnet and Lahelle, blast

was probably responsible for its poor yield performance this year. Bellenont also

has poor stand establishment characteristics. It is very sensitive to seedin"

depth, and if planted too deep (more than 0.5 inch) stands nay be unsatisfactory.

Therefore, Dellemont appears to be a variety that requires superior management

practices if it is to perform well.

H-201, a California medium grain short stature variety, ranked last with a

yield of 1240 Ibs/A. This low yield can be attributed entirely to its blast

susceptibility. Leaf blast was observed on H1-201 at the Seminole location less

than 60 days after planting. The disease incidence was so severe that some plots

were completely killed prior to heading. Because of i-201's extreme sensitivity to

blast, it probably will not be an acceptable variety for the E.A.A.




-7-

Genoral description of rice varieties ant location
Everglades Agricultural Arf-a in 12S2.


tested in the


State Locati on
Plant Grain of Gulf I
Variety Heighti/ :iturityy Typed/ Orinin Seminole A.R.E.C. Western

Bellemont S Ii L TX X X X

Lebonnet T E L TX X X X

Labelle T VE L TX X X X

F.ars T 1 iI ARK X X X

LA 110 ii i LA X X X

Leah S ii L LA X X X

S-201 S E S CA X X X

H-201 S VE i1 CA X X X

L-201 ii VE L CA X X X

UYII-045 i I1 L ARK X

UYH-007 S VE L AR X

UYIJ-015 T H L TX X

UYil-043 S Ui L TX X

1/ S = Short, 30-35 inches, I0 = nediun, 3G-40 inches, T = Tall, 41 + inches
tall at maturity.

2/ VE = Very early, E = early, i = midseason.

3/ S = Short, !I = medium, L = long.


Table 1.





-8-


Performance of rice varieties at Seminole Sugar (Brida), 1902.


Variety

Bellemont

Lebonnet

Labelle

liars

LA 110

Leah

S-201

M-201

L-201

Mean


1/ Rough rice at 12% moisture.

/ Days from planting (4/6/82) to head emergence of 50% of the plants in
the stand.
3/ Percent of the stand infected with blast (Pyricularia oryzae) at harvest.

4/ A visual rating on a scale of 0 (no vigor, all plants damaged) to 10
(no damage).
5/ Values followed by the same letter are not significantly different at
p = 0.05.


Table 2.


Yield/
Acre (lbs)l/

1149 i/

2075 c

1374 d

3315 b

4140 a

1978 c

2230 c

195 e

937 d

1932


Days to
50% Heading/

92 al

87 b

76 d

89 a

91 a

90 a

82 c

75 d

76 d

84


Blast
Reaction/

82 bl

48 d

63 c

17 f

9 f

27 e

83 b

99 a

90 a

58


Propanil 4
Reaction-

6.6 a5/

5.4 b

5.1 b

5.6 b

5.5 b

5.4 b

4.8 b

5.3 b

5.8 b

5.5





-9-

Table 3. Performance of rice varieties at A.R.E.C.,


Belle Glade, FL, 1982.


Yield! Days to


Variety

Bellemont

Lebonnet

Labelle

fars

LA 110

Leah

S-201

HI-201

L-201

UYN-007

UYN-045

UYH-015

UYN-043

Mean


1/ Rough rice at 12% moisture.
/ Days from planting (4/15/82) to head emergence of 50% of the plants in
the stand.
3/ A visual rating of stand density from 0 (no plants) to 5 (100% stand)
taken on 6/1/82.
4/ Values followed by the same letter are not significantly different at
p = 0.05.


Yield/
Acre (lbs)l/

3460 cd4/

3672 abc

3580 bc

4672 abc

4255 abc

4368 abc

4058 abc

2495 d

4847 a

4111 abc

4698 ab

3771 abc

3898 abc

3991


Days to
50% Heading2/

90 d4/

90 d

79 h

87 ef

95 ab

89 de

85 fg

73 i

83 g

79 h

93 abc

92 bcd

95 a

87


Stand
Establishment3/

3.0 del4

3.1 cd

4.0 abc

4.1 ab

3.9 abcd

4.6 a

3.7 abcd

4.0 abc

3.4 bcd

4.0 abc

3.7 abcd

2.2 e

3.1 cd

3.6





-10-

Table 4. Performance of rice varieties at Gulf and lWestern, Okeelanta,
FL, 1982.
----------------------------------------------------------------


Variety

Bellemont

Lebonnet

Labelle

Mars

LA 110

Leah

S-201

H-201

L-201

Plean


Yield/
Acre (Ibs) -

2208 e4/

3702 c

3087 d

4709 b

5885 a

3385 cd

3601 cd

1026 f

3412 cd

3560


Days to
50% Heading2/

87 b4/

82 d

74 g

85 c

94 a

87 b

79 e

72 h

77 f

82


I/ Rough rice at 12% moisture.

/ Days from planting (4/21/82) to head emergence of 50% of the plants
in the stand.

3/ A visual rating of stand density from 1 = 10% emerged to 10 = 100%
emerged taken on 4/28/82.
4/ Values followed by the same letter are not significantly different
at p = 0.05.


Stand
Establishment3/

1.0 g4/

4.3 cd

7.0 b

4.7 cd

2.8 e

4.8 c

1.5 fg

2.0 f

8.8 a

4.1





-11-

Table 5. Yields of rice varieties tested at 3 locations in the Everglades
Agricultural Area, 1982.


Location
Gulf and
Western

2208

3782

3087

4709

5885

3335

3608

1026

3412

3560


----------------

flean Rank

2273 3

3177 5

2680 7

4232 2

4761 1

3245 4

3297 3

1240 9

3066 6


Variety

Bellemont

Lebonnet

Label le

lars

LA 110

Leah

S-201

1-201

L-201

HFean


Seminole

1149

2075

1374

3315

4140

1978

2230

195

937

1932


AREC

3460

3672

3530

4672

4255

4368

4058

2495

4847

3991





-12-

APPEFNDIX

Table 1. Comparison of 1982 and 57 year mean maximum and minimum temperatures
and rainfall data for the EAA rice growing season.


Temperature.
maximum
57 year
average 1982

79.5 81.8

83.0 84.7

86.6 84.8

88.8 89.1

90.4 90.6

90.6 91.0


OF
minimum
57 year
average 1982

55.0 59.6

59.0 64.0

63.6 67.9

68.4 68.5

70.2 70.4

70.6 71.0


Rainfall inches
57 year
average 1982

2.87 8.13

2.91 2.88

5.03 11.84

8.84 12.51

8.14 6.05

8.22 8.11


Fonth

Hiarch

April

[lay

June

July

August




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