Soybean Looper and Beet Armyworm Control on Soybean in Louisiana, 1995

Abstract Three tests, each consisting of 4-5 insecticide treatments were replicated 4 times in a RCBD at the Macon Ridge Branch of the Northeast Research Station, Winnsboro, LA. Cotton was planted 1 Jul into plots 4 rows (40 inch centers) by 30 ft. Treatments for Tests 1, 2 and 3 were applied on 2, 13 and 14 Sep, respectively, with a high clearance sprayer calibrated to deliver 11.5 gal total spray/acre through Teejet X-8 hollow cone nozzles (2/row) at 46 psi. Treatment efficacy was determined by taking a 10 sweep (standard 15 inch diam net) sample from each plot. Sweep samples were usually taken 2, 4-5 and 6-7 DAT on rows 1, 2 or 3, respectively. The test areas received 0.20, 0.67 and 1.1 inches rainfall on 6, 15 and 16 Sep, respectively.

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CONTROL OF SOYBEAN LOOPER AND BEET ARMYWORM, 1998

Arthropod Management Tests ◽

10.1093/amt/24.1.f115 ◽

1999 ◽

Vol 24 (1) ◽

Author(s):

K. D. Torrey ◽

B. R. Leonard ◽

J. Gore

Keyword(s):

Beet Armyworm ◽

Soybean Looper

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Control of Soybean Looper and Beet Armyworm in the Macon Ridge Region of Louisiana, 1995

Arthropod Management Tests ◽

10.1093/amt/21.1.288 ◽

1996 ◽

Vol 21 (1) ◽

pp. 288-289

Author(s):

J. H. Fife ◽

B. R. Leonard ◽

K. D. Torrey ◽

D. J. Boethel

Keyword(s):

Beet Armyworm ◽

Soybean Looper

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Efficacy of Cry1Ac:Cry1F Proteins in Cotton Leaf Tissue Against Fall Armyworm, Beet Armyworm, and Soybean Looper (Lepidoptera: Noctuidae)

Journal of Economic Entomology ◽

10.1603/029.102.0414 ◽

2009 ◽

Vol 102 (4) ◽

pp. 1497-1505 ◽

Cited By ~ 12

Author(s):

K. V. Tindall ◽

M. Willrich Siebert ◽

B. R. Leonard ◽

J. All ◽

F. J. Haile

Keyword(s):

Leaf Tissue ◽

Fall Armyworm ◽

Beet Armyworm ◽

Cotton Leaf ◽

Soybean Looper ◽

Lepidoptera Noctuidae

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Multicellular Rearing Methods for the Beet Armyworm, Soybean Looper, and Velvetbean Caterpillar (Lepidoptera: Noctuidae)

Journal of Entomological Science ◽

10.18474/0749-8004-25.2.336 ◽

1990 ◽

Vol 25 (2) ◽

pp. 336-340 ◽

Cited By ~ 4

Author(s):

G. G. Hartley

Keyword(s):

High Volume ◽

Beet Armyworm ◽

Cotton Cloth ◽

Anticarsia Gemmatalis ◽

Velvetbean Caterpillar ◽

Egg Hatch ◽

Heliothis Spp ◽

Rearing Methods ◽

Soybean Looper ◽

Lepidoptera Noctuidae

Methods used for rearing Heliothis spp. larvae in a multicellular container were modified for rearing beet armyworm (BAW), Spodoptera exigua (Hübner), soybean looper (SBL), Pseudoplusia includens (Walker), and velvetbean caterpillar (VBC), Anticarsia gemmatalis (Hübner). Polyester-cotton cloth used for Heliothis oviposition was unsatisfactory for BAW, SBL, and VBC. A polyester-cotton cloth with a dimpled surface was discovered which was suitable for all three species. Beet armyworm eggs were removed from the oviposition cloth and disinfected with sodium hypochlorite. This procedure could not be used for SBL or VBC as it resulted in significant reduction in egg hatch. New methods were developed for placing BAW, SBL, and VBC eggs into a multicellular container. A separator and high volume blower used to harvest Heliothis pupae was also used to harvest BAW and VBC pupae. SBL pupae, because of webbing spun by the larvae prior to pupation, could not be harvested in this manner. A pupal harvest method was developed for SBL. A phosphoric-propionic acid mix incorporated into the larval diet controlled contaminants. These procedures have been used since 1986 at Stoneville and more than ¾ million pupae and 100 million eggs were reared in 1987 and 1988.

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Evaluation of Pirate 3SC Against Cotton Insect Pests in Louisiana, 1994

Arthropod Management Tests ◽

10.1093/amt/20.1.205 ◽

1995 ◽

Vol 20 (1) ◽

pp. 205-205

Author(s):

B. R. Leonard ◽

C. A. White ◽

J. B. Graves

Keyword(s):

Insect Pests ◽

Sprinkler Irrigation ◽

Boll Weevil ◽

Test Area ◽

Tobacco Budworm ◽

Beet Armyworm ◽

Feeding Damage ◽

Hollow Cone ◽

Soybean Looper ◽

High Clearance

Abstract Cotton was planted 2 Jun with plots consisting of 4 rows (40 inch centers) × 50 ft. Treatments were arranged in a RCBD, replicated 4 times. Applications were made with a high clearance sprayer calibrated to deliver 6 gal total spray/acre through Teejet X-8 hollow cone nozzles (2/row) at 46 psi. Insecticides were applied on 9, 12, 15, 22 Aug and 1 Sep. Treatments were evaluated by examining 50 squares per plot on 12, 15, 19, 26 Aug for evidence of bollworm-tobacco budworm and boll weevil damage. The data reported for boll weevil are a summary of across sample dates. High numbers of soybean looper and beet armyworm larvae were observed in the plots during Sep and visual defoliation ratings were used to evaluate treatments on 21 Sep. Each plot was scored as follows: 0 (no feeding damage), 1 (feeding damage within the lower Vi of the plant), 2 (feeding damage in the lower Vs and middle % of the plant) or 3 (feeding damage throughout the plant). The plots were mechanically harvested on 25 Oct to determine seedcotton yields. The test area received 0.1, 1.9, 0.6 and 0.2 inches rainfall on 14, 21 Aug, and 2, 7 Sep, respectively. Supplemental moisture was provided by sprinkler irrigation “as needed” during the season, but not within 48 h of treatment applications.

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Evaluation of Pirate 3 SC Against Boll Worm-Tobacco Budworm in Louisiana, 1993

Arthropod Management Tests ◽

10.1093/amt/19.1.231 ◽

1994 ◽

Vol 19 (1) ◽

pp. 231-231

Author(s):

B. R. Leonard ◽

P. A. Clay ◽

E. Burris ◽

J. B. Graves ◽

C. A. White

Keyword(s):

Methyl Parathion ◽

Sprinkler Irrigation ◽

Boll Weevil ◽

Test Area ◽

Tobacco Budworm ◽

Beet Armyworm ◽

Feeding Damage ◽

Seed Cotton ◽

Hollow Cone ◽

Soybean Looper

Abstract Cotton was planted 2 Jun with plots consisting of 4 rows (40 in centers) × 50 ft. Treatments were arranged in a RCBD and replicated 4 times. Applications were made with a high clearance sprayer calibrated to deliver 6 gal total spray/acre through Teejet X-8 hollow cone nozzles (2/row) at 45 psi. Insecticide treatments were applied on 4, 9, 20, 31 Aug. Methyl parathion 4 EC (0.33 lb [AI]/acre) was applied to all plots on 24 and 28 Aug to reduce boll weevil infestations. Efficacy was determined by examining 50 plant terminals and squares per plot on 6, 13, 23 Aug and 2 Sep for evidence of damage and the presence of bollworm-tobacco budworm larvae. The data reported for bollworm-tobacco budworm and boll weevil damage are a summary of trial means across sample dates. High numbers of soybean looper and beet armyworm larvae were observed in the plots during Sep and visual defoliation ratings were estimated to evaluate differences among treatments. Each plot was scored as follows: 0 (no feeding damage), 1 (feeding damage within the lower Vi of the plant), 2 (feeding damage in the lower Vi and middle Vi of the plant) or 3 (feeding damage throughout the plant). The plots were mechanically harvested on 17 and 24 Oct to estimate seed cotton yields. The test area received 2.0 inches rainfall on 6 Aug, 0.5 inch on 20 Aug, and 0.3 inch on 28 Aug. Supplemental moisture was provided by sprinkler irrigation "as needed" during the season but not within 48 h of treatment applications.

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Control of Soybean Looper and Beet Armyworm on Soybean in North Louisiana, 1993

Arthropod Management Tests ◽

10.1093/amt/19.1.274 ◽

1994 ◽

Vol 19 (1) ◽

pp. 274-274

Author(s):

Alan T. Wier ◽

David J. Boethel ◽

James D. Thomas ◽

B. Roger Leonard ◽

Eugene Burris

Keyword(s):

Growth Stage ◽

Methyl Parathion ◽

Field Experiments ◽

Beet Armyworm ◽

Research Station ◽

Hollow Cone ◽

Spray Volume ◽

Experimental Treatments ◽

Soybean Looper ◽

North Louisiana

Abstract Two field experiments were conducted to evaluate control of soybean looper and beet armyworm on soybean with several insecticides. In Test 1, insecticides were applied to plots measuring 15.2 m long × 8 rows (0.5 m spacing) located at the Northeast Research Station near St. Joseph (Tensas Parish), LA. Plots were arranged in a RCBD with 4 replication blocks. Insecticides were applied with a tractor and compressed air sprayer calibrated to deliver 93.5 liters/ha at 3.8 kg/cm2 through TX12 hollow cone nozzles (2 per row). Insecticides were applied on 24 Aug to ‘Davis’ soybeans in the R5 growth stage. In Test 2, experimental design, number of replications, nozzle size and type, and spray volume per hectare were identical to Test 1. Plots that measured 12.2 m long by 4 rows (1 m spacing) were located at the Macon Ridge Research Station near Winnsboro (Franklin Parish), LA. Sprayer pressure was 2.8 kg/cm2. Insecticides were applied on 25 Aug to ‘Buckshot 723’ soybeans in the R3 growth stage. Posttreatment samples consisted of one set of 25 sweeps per plot (0.38 m diam muslin net), taken 2 and 6 DAT, or 2 and 7 DAT in Tests 1 or 2, respectively. Precipitation did not occur throughout the duration of both tests and plots were not irrigated. Both test areas were treated with methyl parathion before the experiments. Test 1 was treated with 0.56 kg (AI)/ha 2 wk before experimental treatments were applied and Test 2 was treated with 0.28 kg (AI)/ha 3 wk before experimental treatments were applied.

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