Group Title: Quincy AREC research report - University of Florida Agricultural Research and Education Center ; NF 78-3
Title: Field evaluation of insecticides and plant tolerances for control of insects attacking peanuts in 1978
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Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00074342/00001
 Material Information
Title: Field evaluation of insecticides and plant tolerances for control of insects attacking peanuts in 1978
Series Title: Quincy AREC research report
Physical Description: 4 leaves : ; 28 cm.
Language: English
Creator: Tappan, William B., 1928-
Gorbet, Daniel W ( Daniel Wayne ), 1942-
Agricultural Research and Education Center (Quincy, Fla.)
Publisher: Agricultural Research and Education Center
Place of Publication: Quincy Fla
Publication Date: 1978
 Subjects
Subject: Peanuts -- Diseases and pests -- Control -- Florida   ( lcsh )
Peanuts -- Effect of pesticides on -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: William B. Tappan and D. W. Gorbet.
General Note: Caption title.
 Record Information
Bibliographic ID: UF00074342
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 85784175

Full Text







AGRICULTURAL RESEARCH AND EDUCATION CENTER
Quincy, Florida

AGRICULTURAL RESEARCH CENTER
Marianna, Florida


Quincy AREC Research Report NF 78-3


Field Evaluation of Insecticides and Plant Tolerances for Control
of Insects Attacking Peanuts in 1978

William B. Tappan, Entomologist, Quincy, and
D. W. Gorbet, Associate Agronomist, Marianna


MATERIALS AND tI 90l IE LIBRARY

Three granular soil and 10 insecticidal spray treamrnts e field tested on
Florunner peanuts for insect control and phytot xicity. In a second e eriment,
Orthene was applied at various intervals after planting to determine the proper timing
of insecticidal applications for control of tob If.bAtSriifFl i WiMt3 a fusca (Hinds),
on Florunner peanuts. In that same experiment, -3-panttg s-r-of-Firan peanuts at
various times were made to determine the relationship of plant maturity to thrips
population levels. Also, observations were made in both of the aforementioned experi-
ments to determine whether or not the thrips population levels increased in the flowers
once levels began to diminish in the foliage buds. Certain peanut breeding lines and
varieties were studied in a third and fourth experiment to determine if any tolerance
to insect attack could be detected.

A Hudson Climax 6339 compressed-air sprayer with one hollow cone nozzle over each
row was used to make all spray applications. The sprayer was calibrated to deliver
approximately 25 gallons of spray at 40 p.s.i. at normal walking speed. The broad-
cast granular applications were made by hand.

Treatments listed in Tables 1 and 7 were replicated 3 times in complete randomized
blocks. Each plot was 4 rows wide, and rows were 30 feet long planted on 3-foot centers.
The 2 center rows constituted the experimental plot, and the 1 row on either side acted
as buffers between plots. Alleys between blocks of plots were 10 feet wide. Plots
treated with various granular materials were 12 x 34 feet in size, and were reduced to
12 x 30 feet after planting. Treatments listed in Tables 11 and 12 were replicated 3
times in complete randomized blocks. Each plot was 2 rows wide, and the rows were 20
feet long planted on 3-foot centers. Both rows were used as the experimental plot,
and there were no buffers between plots within blocks. Alleys between blocks of plots
were 10 feet wide. The test area was located in the northwest portion of the farm
immediately north of the wooded area at the Agricultural Research Center in Marianna,
Florida.

All cultural practices in preparing the test area for planting were performed in
the usual manner. Beds for planting were prepared and fertilizer applied in April.
Herbicides; Balan, 1 gallon + Vernam, 2.5 pints per acre were applied on April 24, 1978,
and Lasso, 2 quarts + Dyanap, 1.5 gallons per acre were broadcast at cracking on May 5.
The latter 2 herbicides were applied at cracking on June 2 on the checks in the thrips.,
experiment planted on May 26, and on the insect tolerance experiments. No herbicide
was used on the thrips experiment checks planted on June 23. The majority of the
plots was planted on April 28 and harvested on September 11, and the peanuts were
picked on September 13. For additional planting dates and harvesting details refer to
the footnotes of Tables 1 through 12.

The dates treatment applications were made are given in a footnote in Tables 1
through 10. Sprays were applied generally as needed or on an established schedule,
as in the thrips experiment, for thrips and worm control. The granular materials
were applied broadcast on the soil surface prior to planting and incorporated with the
soil to a depth of 2-4 inches with a rotary tiller the same day of planting.

Tobacco thrips counts were made from natural infestations by counting the number
of adult and immature thrips collected in 25 cc. bottles from 10 foliage buds per plot
at weekly intervals beginning on Hay 15 and ending August 28. Also, thrips were counted
on 5 flowers per plot collected in the above manner beginning on June 5 and ending







-2-


August 14. In the plant insect tolerance experiments, the thrips counts were made from
5 foliage buds per plot taken weekly beginning on June 21 and ending July 19. Counts
were made in the laboratory after the thrips had been washed from the buds and flowers
with alcohol and collected on 9 cm. filter paper in a Buchner fuhnel under vacuum. A
binocular microscope with 15X magnification was used to make the counts. Ratings of
foliage damaged by thrips were made on the same dates that thrips were counted. The
rating system used was based on a scale of 0 to 10, with 0 being no damage and 10 being
100 percent of the foliage showing some feeding damage.

Counts of corn earworm, fall armyworm, and velvetbean caterpillar larvae were
made from natural infestations by counting the number of live larvae in 3 feet of row
per plot at weekly intervals beginning on August 2 and ending August 30. Worm counts
were made weekly beginning on August 2 and ending September 20 in the insect tolerance
experiments.

Visual phytotoxicity ratings were begun on Hay 15 and continued at weekly intervals
until August 28. Plots were rated according to severity of phytotoxicity observed.
The ratings were based on the following system:


None
Slight leaf deformity or spotting
Moderate leaf deformity or spotting
Heavy leaf deformity or spotting with some necrosis
Severe leaf deformity or spotting with considerable necrosis


Yield was calculated in pounds per acre from the total weight of dried peanuts
picked from the 2 center rows of each plot. The May 26 planting in both plant insect
tolerance experiments was not picked for yield. No crop value was calculated for any
of the experiments.

Duncan's multiple range test was applied to all means analyzed to obtain statistical
comparisons for data interpretation.

Rainfall data expressed in inches for the duration of the experiments from April 28
through October 10 were as follows:


Hay
2-0;.90
3-0.40
4-1.70
7-0.32
8-0.02
10-0.46
13-1.09
16-0.16
17-0.48
18-0.37
23-0.43
27-0.12
31-0.28
Total-6.73


June
2-0.02
3-1.30
4-0.04
6-0.27
7-0.03
8-0.18
9-0.15
11-0.19
11-0.02
12-0.23
13-T
23-0.02
25-0.05
30-1.29
Total-3.79


July
4-1.41
5-0.77
6-0.04
11-0.47
13-0.08
16-0.95
17-1.21
24-0.42
25-0.34
26-0.60
27-0.45
28-0.30
29-0.04
30-0.10
31-0.07
Total-7.25


August
1-0.26
4-0.63
5-0.01
7-0.05
9-0.34
10-0.47
11-0.16
12-0.02
13-0.07
20-1.18
22-1.52
23-T
28-0.08
30-0.11
Total-4.90


September
6-0.04
14-0.77
22-0.10
30-0.07
Total-0.98


October
1-0.08
Total-0.08


T = Trace
Grand Total 23.73 inches


RESULTS AND DISCUSSION


Populations of tobacco thrips were heavier in
flowers than in 1977. Damage was apparent about 3
its peak about 6 veeks after planting and declined


both terminal foliage buds and
weeks after planting and reached
thereafter. Worm populations occurred


later than normal and never reached threshold levels of 4 to 5 worms per foot of row
until September 20. At that time, only plants in the plant insect tolerance experiments
remained in the field as all other experiments had been harvested. Lesser cornstalk
borer populations did not occur in damaging numbers until late in October. Light
injury was noted in the check planted June 23 in the thrips experiment when harvested
on October 26. Dry weather during September and October probably contributed to attack








-3-


by the lesser cornstalk borer on the thrips experiment checks. The corn earworm, fall
armyworm, and velvetbean caterpillar were the most numerous of the worm pests that
occurred during the experimental period, but damage was light owing to the light popu-
lations present. (See Table 5.)

The thrips count following the first spray treatment of May 8 showed no significant
difference in populations. (See Table 2.) The first spray was applied 10 days after
planting and the results indicated that the timing of the spray application was too
early. The count on May 22 showed a heavy population on the check. If the spray
interval had been delayed about 5 to 7 days, then the population should have been re-
duced significantly by some of the treatments at the first count on May 15. However,
some of the treatments had enough residual effect and produced significant reductions
through May 22. Only the granular soil treatments reduced initial populations longer
as seen by the count on Hay 29. The spray application on June 21 was similar to the
one on Iay 8, in that significant reduction in thrips populations did not occur until
12 days after the application; July 3. However, populations were on the decline and
significance was lost in the next count on July 10. The decline in population numbers
began about June 5, and continued for the remainder of the experimental period. Counts
of thrips population levels in the flowers on June 5, 19, 26, July 10, 17, and 24 were
generally higher than those in the terminal buds. However, the majority of thrips
found in the flowers were adults, which indicated that the adult thrips apparently
preferred the flowers, probably because of a feeding stimulus. (See Table 2 and 4.)
The first population of thrips that attacked the foliage buds on Hay 15 were adults.
(See Table 2.) From May 22 to the end of the experimental period on August 28, the
majority of thrips found in the terminal buds were immatures. The difference in
morphological stages present in the two different feeding sites indicated no signif.-
icant migration habit between the two sites. Apparently, the adult thrips found in
the flowers were migrants, but no conclusive evidence was found that they migrated
there from the foliage buds. The thrips that caused the major portion of foliage
injury were immatures as indicated by the damage indices on Hay 29. (See Table 3.)
Generally, the visible foliage injury was not discernible until a week following a
specific bud count because young foliage buds require a few days to expand to expose
thrips injury. That phenomenon was evident from the bud counts on May 22 and the
damage indices on May 29. (See Table 2 and 3.) Damage began to diminish on June 19,
and continued downward for the remainder of the experimental period. Again as in 1977,
thrips foliage damage did not cause a significant reduction in yield. (See Table 5.)
The data for the past 3 years indicated that it was impossible to obtain absolute
control of thrips. Thrips populations decline naturally as the season progresses,
but some are found in both foliage buds and flowers all season long. The theory that
thrips leave the foliage buds and migrate to the flowers when the plant begins to
flower does not seem to be entirely the case. More than likely a physiological change
in the plant at the time of flowering may aid in reducing the thrips population in the
foliage buds.

Control of fall armyworm, corn earworm, and velvetbean caterpillar and the effect
on yield is presented in Table 5. The complex of foliage feeding Lepidoptera never
reached economic threshold levels during the experimental period. Therefore, none of
the treatments had any significant effect upon yield.

Furadan granular soil treatment and sprays of BAY iNTN 9306 and CGA-15324 were
the only treatments that caused any visible phytotoxicity. (See Table 6.) The injury
from Furadan was the typical chlorosis and necrotic spotting along leaf edges and tips
with some spotting of the lamina. Apparently, Furadan was not taken into the plant
as much as in previous years because the phytotoxicity was not as prevalent as observed
in past experiments. The early season rainfall may have caused some leaching from the
soil. Early season thrips damage indices on May 29 indicated the material was not per-
forming as it should. (See Table 3.) Thrips counts in the foliage buds on May 22
showed similar results from the Furadan treatment. (See Table 2.) The injury from both
BAY NTN 9306 and CGA-15324 was not observed until after the second spray application,
which indicated a possible cumulative effect from the two compounds. The injury appeared
as dark greasy spots in the lamina, and latir some became necrotic. Yield was decreased
slightly by CGA-15324, but neither compound reduced the yield significantly. (See Table
5.)

In the thrips experiment, foliage feeding Lepidoptera never became a problem during
the entire course of the experiment. The data fror the experiment indicated that thrips
do not reduce yields significantly. (See Table 8.) There was a significant difference
in yields when different planting dates were compared, but the difference was not
associated with thrips populations. There ias an indication that a single spray applied
at either 10 or 17 days after planting produced higher yields than that applied 24 days






-4-


after planting. The 24-day application was made too late to give good control of the
early population of thrips as evidenced by the counts on May 22. There was no doubt
from the data that Orthene was an excellent thripicide, and the best results as far as
yield was concerned came from 3 applications at 17, 24, and 52 days after planting. The
thrips populations behaved similar to those in the granular soil treatment and spray
experiment in Tables 2 and 4. Damage indices in Table 9 were similar to those in
Table 3, but thrips populations in the flowers were slightly smaller. (See Table 10.)
A population of thrips of 1.0 per bud was apparently large enough to inflict heavy
damage on the foliage. However, as the plant aged the effect of the 1.0-thrips-per-
bud level on the damage indices lessened. The data clearly indicated that delaying
planting will not provide protection from thrips attack, since the thrips were present
on the foliage and flowers during the entire crop season. The heaviest populations on
the buds occurred 17 to 24 days after planting and declined thereafter. This observation
coincides with prior experiments and further suggests that some physiological change
in the plant may account for the decline. The process of flowering and pegging may
cause the change, which makes the foliage less attractive to the ovipositing adult
thrips.

The plant insect tolerance experiments indicated little tolerance of the
experimental materials to thrips attack. (See Tables 11 and 12.) UC-6 and
72 X 42-6-1-1-2 showed some tolerance to physical injury by thrips on July 5 and 19,
which was significant at the 5% level. However, the amount of foliage showing injury
was considerably higher than desired. (See Table 11.) Similar observations were made
on the same dates with NC-6, NC-343, and UC-15729. (See Table 12.) Population pressure
from foliage feeding Lepidoptera reached the economic threshold level of 4 to 5 worms
per foot of row on August 23, September 6, 13, and 20. (See Table 11.) However,
the statistical analysis of the data was inconclusive, but 72 X 41A-6-1-2-2 showed
some promise. The line (72 X 41A-6-1-2) from which this selection was made performed
in a similar manner in 1977. The complex of Lepidoptera present on the plants on
August 23 was primarily corn earworm; therefore, 72 X 41A-6-1-2-2 may posses some
tolerance to that particular species. The lines 72 X 42-6-1-2-1, 72 X 42-6-1-2-2,
72 X 42-6-1-2-3, and 72 X 42-6-1-1-1 showed enough promise to warrant further study
in 1979. None of the lines in Table 12 had enough foliage feeding insect pressure
to ascertain any tolerance in the plants. The performance of NC-15729 on August 23
makes that line a candidate for further study even though the results were not signif-
icantly different from that obtained with Florunner. The two insect tolerance
experiments indicated that NC-6 does not possess a strong tolerance to attack from
thrips or the Lepidoptera pests studied. The tolerance to thrips injury by NC-6
would not be of economic significance, since thrips are not an economic pest.





AREC, Quincy and ARC, Ilarianna, Florida


Table 1: Broadcast Granular Soil and Foliar Spray


ApDlicationsb


Treatments Applied for Insect Control on Florunner Peanuts.


Lbs. or Gals.
per Acre per
ADnlication


ARC, ilarianna 1978.


_Lbs Al


Lbs. AI
per Acre per
Aoolication


Furadan, 10%G
Di-Syston, 15%G
Temik, 15%G
FMC-33297, 0.05%S(EC)
SD-43775, 0.05%S(EC)
CGA-15324, 0.24%S(EC)
Penncap-iI, 0.5%S(F)
Orthene, 0.35%S(SP)
Monitor, 0.25%S(W-0)
BAY ITiN 9306, 0.5%S(ELC)
Knox-Out, U.362%S(F)
Lannate, 0.25%S(L)
UC-51762, 0.24%S(WP)


aG=Granules, EC = Emulsifiable Concentrate, F =
tIP = Wettable Powder.


Flowable, SP = Soluble Powder, Wi! = Water Miscible, L = Liquid, and


bTreatments applied 5/8 and 6/21/78. Seed sown 4/28, and crop


a
'.Ln mL r


60.0
40.0
40.0
25.3
25.7
24.5
23.0
24.5
26.9
25.2
28.5
29.4
22.6


6.00
6.00
6.00
0.11
0.11
0.48
0.96
0.71
0.56
1.05
0.86
0.62
0.45


ream. ..+,a


--- ---- --


harvested 9/11/78.






AREC, Quincy and ARC, Marianna, Florida


Table 2: Iffects of Broadcast Granular Soil and Foliar Spray Treatments on Thrips Control on Florunner Peanuts.


Treatment and
Lbs. AI per Acre
_ -- A-,, 41-,, a


ARC, ilarianna 1978.


M~n~n JItm1,cm.r Thrins Per RudUL


5/22


5/29 6/5


6/12 6/19 6/26


per app cz on "
5/15 d


7/3


7/10 7/17


7/24 7/31 8/7


8/4 8/21 8/2R


Furadan, 6.00
Di-Syston, 6.00
Temik, 6.0C
FIC-33297, 0.11
SL-43775, C.11
CGA-15324, 0.48
Penncap-ii, 0.96
Orthena, 0.71
i-onitor, 0.56
BAY NTN 93C6, 1.05
Knox-Out, C.86
Lannate, 0.62
UC-51762, C.45
Check (Untreated)


a
1.1
0.8a
0.6a
1. a
0.6a
1. 0a
0.6a
0.3a
0.5a
1. 1a
1.2a
1.2a
1.2a
1.7a


6.8bcd
4.2ab
5.6bc
7.7bcde
8 8cdef
12.7fg
6.2bc
1.3a
3.3ab
14.88
10.7defg
6.9bcd
11.4efg
14.58


4.8ab
3.9ab
2.8a
15.7ef
14.9ef
9.2bcd
17.5f
7.4abc

13.1def
11.3cde
8 9bcd
15,6ef
11.0cde


2.9abc
1.6ab
0.8a
3.8bcde
3.6bcde
3 3bcd
4.0bcde
5.8ef
6.5f
3.0abc
4.2cdef
5.6def
3. 1abc
3. abc


6.3a
3.0a
3.4a
4.4a
3.9a
3.3a
3.5a
3.4a
3.3a
4.3a
4.1a
4.4a
5.3a
5.2a


1.7ab
1.0a
1.8ab
3.4cde
4.4e
2.3abcd
3.7de
2.6bcd
3.2bcde
2.7bcd
3.7de
1.9abc
3.2bcde
2.6bcd


3.0a
2.8a
2.7a
2.8a
1.7a
2.6a
1.9a
1.7a
2.1 i
1.7a
1.4a
4.3a
2.5a
2.9a


a Applications made on 5/8 and 6/21/78. Seed sown 4/28, and crop harvested 9/11/78.
b Ten terminal buds per plot were examined.
c Heans followed by the same letter are not significantly different at the 5% level.
d Thrips counted predominantly adults. Succeeding counts pqgamitnalyimmaates.


0.9a
1. 1a
1.2a
2.6a
1.6a
1.8a
2.8a
1.1a
0.9a
1.4a
2.0a
2.3a
2.3a
1.7a


4.9e
2. abcd
1.5abc
4.0cde
3.2cde
4.7de
2.8abcde
0.3a
0.7ab
3.8cde
4.3de
3. bcde
3.7cde
3.6cde


2.9a
1.8a
3.1a
'3.0a
2.2a
2.1a
2.3a
2.2a
2.6a
2.33a
2.3a
..2.4a
3.2a
3.0a


0.3a
0.5a
0.8a
0.7a
1. a
1.2a
0.5a
0.6a
0.6a
0.8a
0.7a
0.9a
0.6a
0.6a


1.8a
1.2a
0.7a
1.6a
0.9a
1.4a
1.5a
1.0a
1.2a
1.2a
1.2a
1.3a
1.6a
1.4a


0.2a
0.3a
0.3a
0. 4a
0.4a
0.2a
0.6a
0.4a
0.4a
0. a
0.3a
0.3a
0,3a


0.4a
1.0a
0.4a
0.7a
0.6a
0.5a
0.7a
1.0a
U.8a
0.5a
0.6a
0.7a
0.8a
0.5


0.2a
0.3a
0.2a
0.3a
0.2a
0.4a
0.4a
0.2a
0.4a
0.3a
0.2a
0.6a
0.3a
n.2a


0.2a
0.2a
O. ia
0.2a
0.3a
0.2a
0.4a
0.2a
0. 1a
0.2a
0.2a
0.Ia
0. a
0. 1


--


---- r------r L---r-


/195d





AREC, Quincy and ARC, Marianna, Florida


Table 3: Effects of Broadcast Granular Soil and Foliar Spray Treatments in Reducing Thrips Damage on Florunner Peanuts. ARC, Marianna 1978.


Treatment and
Lbs. AI per Acre
per Applicationa


Mean Thrips Foliage Damage Indices '


5/15 5/22 5/29


6/5 6/12


6/19 6/26


.7/3 7/10


7/17 7/24 7/31 8/7 8/1A a/91 P/1o


Furadan, 6.00
Di-Syston, 6.00
Temik, 6.00
FHC-33297, 0.11
SD-43775, 0.11
CGA-15324, 0.48
Penncap-M, 0.96
Orthene, 0.71
Monitor, 0.56
BAY NTN 9306, 1.05
Knox-Out, 0.86
Lannate, 0.62
UC-51762, 0.45
Check (Untreated)


SApplications made
Rating System: 0
c Means followed by


on 5/8 and 6/21/68.
= none to 10 = 100%
the same letter are


Seed sown 4/28, and crop harvested 9/11/78.
of foliage showing some damage.
not significantly different at the 5% level.


0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0


4.7def
3.0bc
3.3bcd
4.7def
3.3bcd
6.7gh
3.3bcd
1.3a
2.7
6.0 g
5.0ef
4.3cde
5.7efg
7.711


6.3b
4.3a
4.3a
9.0c
9.3c
9.3c
9.3c
7.0b
8.3c
9.7c
9.3c
8.7
9.3c
9.7c


6.7
4.3
5.0b
8.7def
g8 0de
9"3ef
9.3
7.7cd
2. 7
5.3

9.7
80cde
903ef
10.0


7.3
5.0
3.0a
9.7de
9.7de
9.7de
9.7de
9 de
9.0 ,e
9.7e
8.7d
10.0e
10.0e
9.7de
10.0e


8.0
4.77b
2.7a
8.7c
8.7c
8.7c
$.7c
S.7C
9.0c
8.3c
9.0c
9. oc
9.0c
8.7C
9.0c


8.7fg
4.0a*
4.3a
7.3cdef
6.7bcd
7.3cdef
5.3ab
6.3bc
6"3bc
6.3b
6.0bc
7. cde
8.0 dfg
8.3efg
9.3d


9.0cd
6.0abc
G.7abcd
7.7bcd
7.0abcd
8.0bcd

6.abcd
'abcd
7.0abcd
8.3bced
8.3bcd
8.7bcd
9.3d


7.3b
2.7a
2.3a
8.0bcd
8.bcd
8.3cd
7.7bc
7.7bc
8.3cd
80bcd
8.0d
8.3cd
8.0bcd
8.3cd
8.3d
8. 7(1


eef
7.3bc
4.3
5.0bcd
6ncde
6.0cde
57cde
5.7
7.7ef
6.7def
2.3a
3.7ab
7.ef
8.0
7.0ef
7.3ef
8.0


7.0 de
3.3 a
5.0bc
6.0cd
5.7cd
7.3de
6.7d
3.0a
3.7ab
7. 3de

7.0

.7;7e


7.0de
3.3a
4.3ab
6.0cd
5.3 bc
7.0de
cd
6.0c
3.3a
3.3a
6.7de
7.3e
6.3cde
6.7de
7.de
7 .


2.a
2.0
2.0a
2.3a
2. 7a
2.3a
2.3a

2.0a
2.7a
2.7a
2.3a
2.7a
2.3a


4.7bc
3.0a
3.3a
4.7bc
4.7 bc
5.0bc
4.3ab
3.3a
3.0a
5.3c
5.7c
5.0bc"
4 ab
4.3b
5.7c


3.7bcd
2.0a
2.3a
3.7bcd
3.7bcd
4.0bcd
4.0bed
abc
3.3ab
2.7a
2.0a
4.3cd
4.7
4Obcd
4.0b c
3. abc
4.7d


1.0a
1.0a
1.3a
1.0a

13a
1.0a
1.3a
L 3a
1.0a
1.0a
1.0a

1.3a
1.0a
1. 3a


- r


i---LL~-~------""---------------- --- -I 1-7 ~/LI VI LO





AREC,Quincy and ARC, Marianna, Florida


Table 4: Effects of Broadcast Granular Soil and Foliar Spray Treatments on Control of Thrips in Florunner Peanut Flowers.


ARC, Marianna 1978.


Treatment and HMean Number Thrips Per Flowerbc
Lbs. AI per Acre d d d d d d a d d
pr Alicationa 6/5 6/12 6/19 6/26 7/3e 7/10 7/17 7/24 7/31 8/7 8/14

Furadan, 6.00 7.3a 3.2a 4.2abc 12.0 1abcd 6.4a 13.9a 6.1a 1.0a 0.9a 2.5a
Di-Syston, 6.00 7.6 3 47 9.4 1.3 4a 12.8a 3.5 0.9 1.0a
Temik, 6.00 5.5a 2.1a 31a 10 8b 0.4a 5.4a 9.6a 3.9aa 0 1.2 1.5a
a a def *abc abcde a a a a 7a
FMC-33297 0.11 8.5a 4.5a 6.4c 9.7 1.3abcd 3.5a 13.5a 4.5 0.7 1.2a 2.5
SD-43775, 0.11 9.1a 4.2a 6.7def 7.5ab 1.6abde 5.5 11.3 5.2 0.7a 1.5a 1.7
CGA-15324, 0.48 10.5a 4.8a 7.3ef 10.1bc 2.7 5.1a 11.7a 3.4a 1.4 1.5 2.0
Penncap-1i, 0.96 10.3a 4.5a 7.5 3.9 2.1 6.9a 11.1 3.0 1.0 1.2 2.3
Orthene 0.71 .2 37a 6.9def 5.3ab 0.7ab 6.1a 11.6a 4.1a 0.8a 1.6a 1.8a
monitor, 0.56 7.7a 2.9a 4abcde 5.8ab 0.8ab 3.9a 10.9a 4.2a 0.1a 2.1a 2.1a
BAY NTN 9306 1.05 .1a 3.3a 4.7abcd 1. 2.3de 4.9a 9.9a 4.3a 1. a 1.6a 2.2a
a a cdef ab de 7a 23a
Knox-Out, 0.86 9.2 4.0a 6.5e 5.3 2.2 5.1 13.0 33a 1.3 1.7a 2.3
Lannate, 0.62 8.7a 3. a 59bcdef 102b 17bcde 4.0a 11.a 4.8a 1.7a 0.8a 2.2a
UC-51762, 045 79a 557bcdef 8.7abc 15abde 5.3a 13.7 4.9a 1.2a 1.3a 2.3a
Check (Untreated) 6.8a 4.5a 39ab 84ab 1.7abde 62a 12.0a 4.9a 0.9a 2.2a 2.1a

a Applications made on 5/8 and 6/21/78. Seed sown 4/28, and crop harvested 9/11/78.
b Examined 5 flowers per plot. Plants began flowering on 5/29/78.
c Means followed by the same letter are not significantly different at the 5% level.
d Thrips counted predominantly adults.
e Thrips counted predominantly immatures.






AREC, Quincy and ARC, Harianna, Florida


Table 5: Effects of Broadcast Granular Soil and Foliar Spray Treatments
ARC, iMarianna 1978.


on Control of Lepidoptera Complex and Yield of Florunner Peanuts.


Treatment and Mean Number Worms Per Foot of Row b,c iean b
Lbs. AI per Acre e Yield/Acreb
per Applicationa 8/2 8/23. 8/30 lbs.

Furadan, 6.00 .4a 1.6a 0.8a 5,045a
Di-Syston, 6.00 0.3a 1.2a 0.9a 4,807a
Temik, 6.00 0.3a 0.6a 0.9a 5,1511
FMC-33297, 0.11 0.1a 1.2a 0.8a 4,815
SD-43775, 0.11 0.4 0.8 1.4a 4,596
CGA-15324, 0.48 0.2a 1.1a 0.4a 4,501a
Penncap-il, 0.96 0.7a 1.1a 0.8a 4,568a
Orthene, 0.71 0.7a 1.3a 1.0a 4,791a
Monitor, 0.56 0.4a 0.9a 0.3a 4,026a
BAY NTN 9306, 1.05 0.2a 0.6a 0.8a 4,767a
Knox-Out, 0.86 0.3a 1.3a 0.3a 4,685a
Lannate, 0.62 0.3a 1.4a 0.7a 4,531a
UC-51762, 0.45 0.6a 1.2a 0.8 4,621
Check (Untreated) 0.6a 1.8a 1.2a 4,713a


a Applications made on 5/8 and 6/21/78. Seed soin 4/28, and crop harvested 9/11/78.
b leans followed by the same letter are not significantly different at the 5% level.
c Hean number of worms per foot of row on checks on 8/9 and 8/16/78 were 0.3 and 0.2, respectively.
d Predominantly corn earworm and fall armyworm.
e Predominantly velvetbean caterpillar and corn earworm.
f Predominantly velvetbean caterpillar.





AREC, Quincy and ARC, Marianna, Florida


Table 6: Phytotoxic Effect of Broadcast Granular Soil and Foliar Spray Treatments on Florunner Peanuts. ARC, Marianna 1978.

Treatment and Iean Phytotoxicity Indicesb
Lbs. AI per Acre
per Applicationa 5/15 5/25/2/29 6/5 6/12 6/19 6/26 7/3 7/10 7/17 7/24 7/31 8/7 8/14 8/21 8/28

Furadan, 6.00 1.0 1.0 3.0 3.3 3.0 2.3 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0i0 0.0 0.0
Di-Syston, 6.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Temik, 6.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
FiC-33297, 0.11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 .0 0.0 0 .0 0 00 0.0 0.0 0.0 0.0
SD-43775, 0.11 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
CGA-15324, 0.48 0.0 0.0 0.0 0.0 0.0 0.0 2.0 1.0 0.3 0.3 0.3 0.0 0.0 0.0 0.0 0.0
Penncap-M, 0.96 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Orthene, 0.71 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Monitor, 0.56 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.u 0.0 0.0 0.0
BAY NTN 9306, 1.05 0.0 0.0 0.0 0.0 0.0 0.0 2.3 3.0 3.0 3.0 2.0 1.3 0.7 0.0 u., 0.0
Knox-Out, 0.86 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Lannate, 0.62 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
UC-51762, 0.45 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Check (Untreated ) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0." 0.0 0.0


a Applications made on 5/8 and 6/21/78. Seed sown 4/28, and crop harvested 9/11/78.

b Rating System: 0 = None, 1 = Slight leaf deformity or spotting, 2 = moderate leaf deformity or spotting, 3 = Heavy leaf deformity or
spotting with some necrosis, and 4 = Severe leaf deformity or spotting with considerable necrosis.







AREC, Quincy and ARC, Marianna, Florida


Table 7: Foliar Spray Treatments Applied for Thrips Control on Florunner Peanuts. ARC, Marianna 1978.

Application Gallons Lbs. AI
Ho. Interval After per Acre per Acre per
Treatment Applications Planting-Daysb per Application Application

Orthene, 0.35%S(SP) 1 10 29.4 0.86
Orthene, 0.35%S(SP) 1 17 31.2 0.91
Orthene, 0.35%S(SP) 1 24 27.0 0.79
Orthene, 0.35%S(SP) 2 10 and 24 29.6 0.86
Orthene, 0.35%S(SP) 3 10, 24, and 52 25.8 0.75
Orthene, 0.35%S(SP) 2 17 and 24 24.5 0.72
Orthene, 0.35%S(SP) 2 17 and 52 27.7 0.81
Orthene, 0.35%S(SP) 3 17, 24, and 52 24.4 0.71
Orthene, 0.35%S(SP) 2 24 and 52 22.8 0.67

a S = Spray and SP = Soluble Powder

b Applications made on 5/8-10 days, 5/15-17 days, 5/22-24 days, and 6/12-52 days after seed were planted. Seed sown 4/28, and
crop harvested 9/11/78.






AREC, Quincy.and ARC, Marianna, Florida


Table 8: Effects of Varied Planting Dates and Orthene Foliar Sprays Applied at Diverse Intervals After Planting on Thrips Populations and Yield of
Florunner Peanuts. ARC, Mlarianna 1978.

Treatment and Mean Number Thrips Per Buda MYean
Lbs. AI per Acre Yield/Acre
per Application 5/15 5/22 5/29 6/5 6/12 6/19 6/26 7/ 7 7/1. 7 17 7/24 7/31 8/7 8/14 8/21 8/28 hb.

Orthene, 0.86b 0.2 1.6a 7.1b 6.5d 3.6a 1.9ab 3.6c 3.4b 0.9a 2.5ab 12a 0.9a 0.2a 0.7 0.2a 0.a 4648ab
Orthene, 0.91c 1.0 2.3a 1.2a 43b 50a 1.5ab 3.6c 3.3b 1.0a 2.6a 0.9a 01a 0.4a 0.3a 0.a4,945
Orthene, 0.79d 1.0c 102b 1.9a 1.3a 4 a 1.7ab 3.7. 3.5b 0.9a 2.6ab 1.6a 1.2a 0.2a 0.7a 0.2a 0.2a 4,278
07bd a a ab aa .ab 2D b 2.a ab 4,744ab
Orthene 086bd 0.2ab 0.6 1.2a 2.0a 4.0a 1.4 2 3.4 0.9a 2.5a 1a 1.2a 0.3a 0.4a 0.4a 0.2 474ab
Orthene 0.75bde 0 1a 1.3a 1.6a 1.8a 3.9a 0.2a 1.0a 2.0ab 1.2a 1.4a 1.1a 1.2a 0.1a 04a 0.3a 0.1a 4,997ab
Orthene 0.72cd 0.7bc 2.4a 0.3a 2.4abc 3.6a 1.2a 4.0c 3.8b 0.6a 3.5 1.7a 1.0a 0.2a 5 05 0.1a 0.1a 4,670a
Orthene, 0.81ce 0.7bc 2.7a 1.8 5.9d 5.6a 0.1a 0.9a 2.2ab 1.2a 2.4ab 1.7a 0.9a 0.a 09a 0.2a 0.2a 4,803ab
Orthene, 0.71cde O.c 31a 0.6a 2.7abc 4.9a 0.5a 1.4ab 2.4ab 1.0a 2.3ab 1,5a 05a 02a 0.3a 0.2a 0.3a 5,207a
Orthene, 0.67de 1.1 10.5b 2.3a 1.5a 5.1a 0.5a 14ab 2.1ab 1.0a 1.9ab 2.2a 0.9a 0.4ab 0.6a 0.3a U.1a 4546ab
Check (Untreated)fi 1.0c 11.6b 14.1c 4.7cd 4.4a 3.2b 3.3C 3.7b 1.3a 22ab 1.2a 1.1a 0.6 0.3a 0.2a 0.3a 4,567ab
Check (Untreated)g ----- 1.2a 17.7b 14.9c 3.5C 6.4c 1.4a 1.9ab 1.3a 0.6 2a 5 0.3 02a 3,486
Check (Untreated)hk --- --- -- -- -- I.1 12.4b 5.4c 1.8 16a 0.9 .7a 0.3a 0.2a 2,594


Ten buds per plot examined. Means followed by the same letter are not significantly different at the 5% level.
Application made on 5/8/78, 10 days after planting.
Application made on 5/15/78, 17 days after planting.
Application made on 5/22/78, 24 days after planting.
Application made on 6/12/78, 52 days after planting.
Seed planted on 4/28/78. Crop harvested on 9/11/78.
Seed planted on 5/26/78. Crop harvested on 10/3/78.
Seed planted on 6/23/78. Crop harvested on 10/26/78.
Thrips counted on 5/15/78 predominantly adults in all treatments.
Thrips counted on 6/5/78 predominantly adults in untreated checks.
Thrips counted on 7/3/78 predominantly adults in untreated checks.







AREC, Quincy and ARC, Marianna, Florida


Table 9: Effects of Varied Planting Dates and Orthene Foliar Sprays Applied at Diverse Intervals After Planting in Reducing Thrips Damage on


Florunner Peanuts.


ARC, Marianna 1978.


Treatment and lHean Thrips Foliage Damage Indicesa
Lbs. AI per Acre
per Application 5115 5/22 5/29 6/5 6/12 6/19 6/26 7/3 7/10 7/17 7/24 7/31 8/7 8/14 8/21 8/28
Orthene, 0.86 0.0 1 0a 2.3b 7.7d 8.7 9.0d 9.0d 9.7 9.0d 7.0b 6.3b 6.3b 4.7 3.7bc 2.3a 1.0a
d 7.1 be 7b 7b 4. 77b .7b 203 ab 1.0a
Orthene, 0.91c 0.0 2 .3 3.7 7.0c 7.7b 8.0 9.0c 9.0 7.0 7.0 6.7 4.7 3.7c 2.0a .
Orthene, 0.79d 0.0 7.7c 8.0d 3.3b 37a 4.0a 5.0b 7.3b 8.3bcd 6.7bc 6.7c 6.3b 4.7b 3.7bc 2.7b 1.3ab
0a 3a a a a b b 7b iab
Orthene, 0.86 0.0 1.0a 1.3 2.0 3.0 33a 4.3b 6.3b 7.3b 6.3 6.0bc 5.7b 5.0b 4.0bc 2.7 1.3a
Orthene, 0.75bde 0.0 1.0a 1.3a 2.3ab 3.7a 3.0a 1.7a 1 7a 1.7a 2.3a 3.0a 3.3 30a 2.3a 1.7a 1.0a
Orthene 0 72d 0.0 2.0 10a 1.7a 3.0a 4a 4.3 73b 80bc 5.7 5.3 5.7 43ab 3ab 23ab
Orthene, 0.81ce 0.0 2.7b 3.0 4.3C 7.0c 6.7b 4.0 2.7a 2.3a 3.0a 3.0a 4.0a 3.3a 2.3a 1.7a 1.0
Orthene 0.7cde 0.0 2.3b 1.3a 2.3ab 3.7a 3.3 2.0a 2.3 2.7 a 30 3.3a 3.7a 30a 2.0ab 1.0a
Orthene, 0.67de 0.0 8.0c 8.3d 4.0c 4.0a 3.3a 2.0a 2.3a 2.7d .2.7a 32 3.. 2.3ca 2.0ab 1.a
Check (Untreated) 0.0 8.0 10.0e 10.0e 9.7 9.3d 9,3cd 9.7c 9.7d 7.7c 7.0 6.3 5.3 4.3 2.7 1.7
Check (Untreated)g 5.7b 100d 10d 10.0d 97d 6.7 5. 4.0bc 2.3 1.3ab
Check (Untreated) 9.7 lO.0d 10.0 8.3 8.3 7.0 6.0c 4.3c


Rating System: 0
5% level.
Application made
Application made
Application made
Application made
Seed planted on 4
Seed planted on 5
Seed planted on 6


= None to 10 = 100% of foliage showing some damage. Neans followed by the same letter are not significantly different at the


on 5/8/78
on 5/15/7
on 5/22/7
on 6/12/7
/28/78.
/26/78.
/23/78.


P, 10 days after planting.
'8, 17 days after planting.
'8, 24 days after planting.
'8, 52 days after planting.
Crop harvested on 9/11/78.
Crop harvested on 10/3/78.
Crop harvested on 10/26/78.







AREC, Quincy and ARC, liarianna, Florida


Effects of Varied Planting Dates and Orthene
Flowers of Florunner Peanuts. ARC, liarianna


Foliar Sprays Applied at Diverse Intervals After Planting on Thrips Populations in the
- 1978.


Treatment ana
Lbs. AI per Acre
ner Aonlication


Hlean Number


6/5"


6/12b 6/19" 6/26b 7/3C


ThriDs Per


7/17b


Flowers


7/24"


7/31D 8/7u 8/14"


Orthene, 0.86d
Orthene, 0.91e
Orthene, 0.79f
Orthene, 0.86df
Orthene 0.75dfg
Orthene, 0.72ef
Orthene, 0.81eg
Orthene, 0.71efg
Orthene, 0.67fg
Check (Untreated)h
Check (Untreated)1
Check (Untreated)3


Lean followed by the same


Thrips counted predominantly adults.
Thrips counted predominantly immatures.
Application made on 5/8/78, 10 days after planting.
Application made on 5/15/78, 17 days after planting.
Application made on 5/22/78, 24 days after planting.
Application made on 6/12/78, 52 days after planting.
Seed planted on 4/28/78, Flowering began on 5/29/78.
Seed planted on 5/26/78. Flowering began on 6/26/78.


.3 Seed planted on 6/23/78. Flowering began on 7/23/78.


Letter are not significantly different at the 5% level.






Crop harvested on 9/11/78.
Crop harvested on 10/3/78.
Crop harvested on 10/26/78.


Table 10:


7.5bcd
6.9abcd
5.3ab
5.8ab

4.7a
8.2cd
4.5
5.9abc
8.8d


2.0a

1.7a

1.3a
1.1 a
2.00a
1.2a
1.5a
2.3a


3.6cd
4.3cd
cd
3. 1d
2.7bc
0.7a
4.7
3a
0.8ab
1.1
0.7a
4.2cd
---


7.8bc
6.3bc
8.3b
5.5b
1.9a
7.2b
1.9a
2.2a
2.3a
5.1
2- 3


1.3bc
1.7c
1.9c
1.3bc


0.9ab
0.3a
0.5ab
1.87
3.7d


3.ab c
1.83a
3.0abc


3.4abc



2.3ab
5.5d


0.5a
0.11
0.8a
0.9a
0.4a
0.7a
0.7a

0.4a
0.5a
0.ia
,0.7a


10.2c
6.0ab
8.5abc
8.0abc

5.7ab
9.9c
8.9bc
89 bc
9.1c
8.5abc
7.3abc
5.3a


Examined 5 flowers per plot.


3.1
iab
2.9ab
2.8ab
2.8
3.6
1.7a
b*
3.6
3.6b
2.4a
1.5a


0.1a
0.3a
0.2a
0.2a
0.1a
0.5a
0.3a
0.6a
0.0a
0.3a
0.3a
0.5a


1.2a
0.7a
0.6a
0.9a
0.9a
0.4a
0.5a
0.8a
0.7a
1.3a
0.8a
0,9a


P


I ,


-


--- --- ----


7/10'







AREC, Quincy and ARC, IIarianna, Florida


Table 11: Tolerance of Certain Breeding. Lines and Varieties to Insect Attack and Damage as Compared to Florunner Peanuts. ARC, Marianna 1978.

Hean Number Hlean Thrips Foliage Mean Number Worms Per Foot of Rowa
Thrips Per Budab Damage Indicesc d d e f
Treatment 6/21 7/5 7/19 6/21 7/5 7/19 8/2d 8/9d 8/16d /e 830e 9/6 9/13 920f


, 72 X 41A-1-1-4-b2
-72 X 41A-6-1-1-1
* 72 X 41A-6-1-1-2
-. 72 X 41A-6-1-2-1
- 72 X 41A-6-1-2-2
- 72 X 42-4-1-1-b3
-72 X 42-6-1-1-1
72 X 42-6-1-1-2
72 X 42-6-1-1-3
-.72 X 42-6-1-2-1
*-72 X 42-6-1-2-2
72 X 42-6-1-2-3
72 X 87A-8-1-1-b3
Tifspan
SE Runner 56-15
NC-6
Valencia
Check (Florunner)


6.7a
5.5a
4.9a
6.3a
3.6a
4.6a
5.8a
8. 1a
6.7a
6.3a
4.2a
6.5a
6.1a
8.3
6.1a
10.1a
10.3a
6.6a


11.3a
8.4a
10.9a
9.7a

6.9a
8.7a
6a
6.5a
5.8a
8.0a
9.3a
6.3a
12.3a
6.2a
5.4a

6.5a
9.4
G.S


4.7a
6. 0a
5.5a
5.1a
5.3a
5.6a
4.7a
3.3a
3.5a
5.3a
5.7a
5.4a
4.5a
4.5a
4.6a
2.3a
3.9a
4.5a


9.3a
9.33a
9.0a
9.0a
9.3a
9.0a
9.3a
9.0a
9.0a
8.3a
9.3a
8.7a
8.7a



9.7a
9.0a


10. Od
9.7cd
9.7cd
9.3bcd
9.0ab c
10.0d
10.0d
.7ab
8.7a
9.7cd
9.7cd
9 7c
9.3bd
10.0d
9.3bcd
10.0d
8.3a
97 cd
9.7cd
9.7cd


9 Obcd
9.0bed
8.7b
9. 0b cd
9 0bcd
9.0bcd

9.3cd
9.0bcd
6.7a
8.3b
0bcd
9.3cd
8. bc
8. 7c
8.7bc

7.0
0bcd
a97
8.7pc


1.Ia
0. 2a
0.4a
0.4a
0.2a
1.6a
0'7a
0:7

0.6a
0.7a
0.7a
1.0a
0.3 a
0.9
1.2a
0.6"
2.4a
0. a


0.8ab
0.3a
10 abc
0.8ab
0.3a
1 9de
0.4ab
0.9abc
1.0abc
0.3a
0.2a
1.3bcd
ab
0.6a
2.2e
1.0ab c
0.8ab
1.8cde
0.7ab
0.7


1.0a
0.8a
1.7a
0.7a
0 9a
1.9ab
0.9a
i.Ia
1.8ab
0.6a
0.7a
0.7a
3.0b
3.0b
1.4a
1.3
3.1b
1.4a


4.6C
3.0abc
3.2ac
3. labc
1.7a
4.4c
2.9abc
4.1 bc
3. abc
2.4ab
2.8a
2.9abc
4.7c
3.7bc
43bc
4.1bc
3.8bc
4.1


2.7a
1.8a
1.3a
1.9a
1.0a
1.3a
1.4a
1.4a
1.2a


2.0a
1.2a
1. 7a
2.2a
1.9a
1.6a
1.2a


3.3a
3.6a
2.6a
3.8a
2.2a
2.7a
2.8a
4.0a
3.4a
4.0a
4.2a
5.1a
3.8a
3.6a
3.8a
3.2a
3.3a
4.4a


3.0a
2.0a
2.2a
1.9a
1.9a
2.3a
3.0a
4.0a
3.1a
3.3a
2.3a
3.1a
3.2a
1.4a
3.3a
1,9a
1.8a
2.9a


4.1e
2.2abcde
1.9abe
2. abcd
2.6abcdef
3 7cdef
3.7abcdef
2.9
4 0def
S.bcdef
3 ibcdef
4.3
34bcdef
3.1f



2.abcdef
1.7
1.7ab
1.1a


Means followed by the same letter are not significantly different at the 5% level.
Five buds per plot examined. Seed sown on 5/26, and crop harvested 10/10/78,
Rating System: 0 = lone to 10 = 100% of foliage showing some damage.
Predominantly corn earworm and fall armyworm.
Predominantly corn earnorm and velvetbean caterpillar.
Predominantly velvetbean caterpillar.









Table 12: Tolerance of Certain Breeding Lines
-Mean Number
Thrips Per Bud
Treatment 6/21 7/5 7/19

AC-17367 8.4a 5.4a 1.9a
NC-343 6.1a 5.6a 3.0a
NC-10247 5.8a 61a 3.5a
NC-10272 6.9a 6.6a 3.5a
NC-15729 9.0a 5.7a 2.4a
NC-15745 7.1a 5.5 4.67
NC-6 9.1 4.5a 2.9a
Valencia 8.5a 7.5 4.3a
Check (Florunner) 10.5 6.7a 2.7


AREC, Quincy

and Varieties to Insect

Mean Thrips Foliage
Damage Indicesc
6/21 7/5 7/19

8.7a 9.7bc 8. bcd
8.0a 8.3 8.3 c
8.7a 9.3c 9.0cd
9.3 10.0c 9.3
8.0a 9.0ab 8.0ab
7a 9.3bc 9.0
8.0a 8.3 7.7a
9.0a 9.7c 9.0d
9.3 10.0 9.3


and ARC, larianna, Florida

Attack and Damage as Compared to Florunner Peanuts. ARC, Marianna 1978.

Hean Number Worms Per Foot of Rowa
8/2d 8/9d 8/16d 8/23e 8/30e 9/6e 9/13f 9/20f

0.6abc 1.0a 1.6a 2.6a 1.8a 2.0a 1.4a 1.3a
1.2bcd 1.7a 1.2a 3.2a 2.9a 2.8a 1.3a 1.7a
0.2ab 1.a 1.1 2.2a .1a 2.8a 10a 2.1a
0.1 0.7 0.8 2.1a 0.7 2.3 1.9 2.1
1. abcd 1.2a 1.3a 1.4a 1.4 1.7a 1.2a. 0.7a
0.6 b 0.3a 0.8a 2.7a 1.2a 1.8a 1. 1.3a
1.3bd 1la 1. 2.3 2.2a 2.3a 1.2 0.9
1.9d 2.2a 3.0 3.7a 2.6a 2.7a 1.2a 1.0
1.4d 1.6 09a 1.8a 1.9a 2.1a 1.8a 1.1a


a leans followed by the same letter are not significantly different at the 5% level.

b Five buds per plot examined. Seed sown 5/26, and crop harvested 10/10/78.

c Rating System: 0 = None to 10 = 100% of foliage shooting some damage.

d Predominantly corn earoarm and fall armyworm.

e Predominantly corn earworm and velvetbean caterpillar.

Predominantly velvetbean caterpillar.




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