evaluation of selected insecticides for control of soybean ... annual report_way...conditions were...

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M.O. Way ⋅ [email protected] ⋅ (409)752-2741 ext.2231 Texas AgriLife Research and Extension Center at Beaumont ⋅ 1509 Aggie Dr. ⋅ Beaumont, TX 77713 ⋅ http://beaumont.tamu.edu

Title: Evaluation of Selected Insecticides for Control of Soybean Insects. Beaumont, TX. 2000.

Project Investigator: M.O. Way, R.G. Wallace, M.S. Nunez and R.B. Eason Texas A&M University

Agricultural Research & Extension Center 1509 Aggie Drive Beaumont, TX 77713 Tel: (409) 752-2741 Fax: (409) 752-5560 E-mail: [email protected]

Introduction The objective of this experiment was to evaluate novel insecticides for activity against insects in soybeans grown on the Upper Gulf Coast.

Materials and Methods The experiment was conducted at the TAMU Agricultural Research and Extension Center at Beaumont in 2000 and was designed as a randomized complete block with 23 treatments and four replications. Plot size was 45 ft x nine rows (30 inches between rows). Treatments are described in the tables. On 10 Apr, plots were sprayed with 2.0 qt/acre Roundup Ultra for pre-plant weed control. On the same day, plots were fertilized with 0-40-60 (N-P2O5-K2O) lb/acre. Immediately after planting, plots were sprayed with 1½ qt/acre Roundup Ultra and 3.0 pt/acre Squadron. Plots were planted with DP7375 RR (Roundup Ready) soybeans at about eight viable seeds per linear foot on 15 May. Soil type was Levac silt loam. In addition, plots were cultivated as needed early in the growing season. Soybeans emerged on 21 May to produce an excellent stand. On 18 Jul, plots were sprayed with 1½ pt/acre Roundup Ultra. On 7 Sep when populations of Lepidoptera were beginning to increase to threshold levels, plots were sprayed with treatment insecticides. Soybeans were R5/6 (pod-fill) at time of treatment applications and defoliation in the plots was less than 10%. Insecticides were applied with a two-person, 23.5 ft swath (13 nozzles) spray rig pressurized with CO2. Nozzle tip size was 80015 and nozzles were equipped with 50 mesh screens. Final spray volume was 21.6 gpa. Conditions were clear and calm at time of treatment applications which began at sunrise. One day before treatment applications, plots were sampled for arthropods with a 15 inch diameter sweep net. Ten consecutive sweeps were taken in each plot. Arthropods from each sample were transferred to a plastic bag which was frozen. At a later date, contents of the bags were thawed and counted. One, 5, 11 and 22 days after treatment applications, plots were sampled as described above. Soybean stage of growth was also noted and recorded for each sample date. On 26 and 27 Oct, the middle four rows of each plot were harvested with a small plot combine. Yields were adjusted to 13% moisture. Seed quality was also determined for each plot using a visual rating scale from 1 to 5 (1 = excellent seed quality; 5 = very poor). In addition, seed size for each plot was determined by counting the number of seeds in a 454 g sample. Arthropod count data were transformed using x+.5 and all data analyzed by 2-way ANOVA and DMRT.

mailto:[email protected]

Evaluation of selected insecticides for control of soybean insects

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Results Lepidoptera Velvetbean caterpillar (VBC) densities were relatively low in the experiment (Table 1). However, all rates of experimental (except the lowest rate), Karate Z, Tracer, Asana XL, Lannate LV and Orthene 90S gave excellent initial and long-lasting control of VBC. Intrepid 240 SC, Dimilin 2L and Steward SC treatments were slower acting than the other treatments. Green cloverworm and looper populations were too low for meaningful evaluations (Tables 2 and 3). Stink bugs. Stink bug populations were too low in the experiment for meaningful evaluations (Tables 5-7). Threecornered alfalfa hopper. No significant differences in threecornered alfalfa hopper (TCAH) populations among treatments were observed until 11 days after treatment applications (Tables 8-10). Experimental at the highest rate tested, Karate Z at the highest rate tested, and Orthene 90S at both rates tested significantly reduced TCAH populations 11 days after treatment applications (Table 10). Miscellaneous arthropods. Populations of miscellaneous insects were too low for meaningful evaluations (Table 11-16). Spider populations appeared unaffected by any of the treatments (Table 17). Yield and seed quality. Due to a severe drought in 2000 and relatively low damaging insect populations in the experiment, yields were low and not significantly different among treatments (Table 18). Seed quality and size were similar for all treatments (Tables 19 and 20).


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Table 1. Soybean insecticide evaluations (velvetbean caterpillar). Beaumont, TX. 2000. 0 no. velvetbean caterpillar/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated -- 4.0 3.0 ab 1.5 a 1.8 a 1.3 a

Experimental 0.002 5.8 0.5 ef 1.3 a 1.5 a 0.5 b Experimental 0.004 4.0 1.0 def 0.3 b 0 b 0 c Experimental 0.007 6.5 0 f 0 b 0 b 0 c Experimental 0.009 11.0 1.3 cde 0.3 b 0 b 0 c Experimental 0.011 2.8 0.5 ef 0 b 0 b 0 c Experimental 0.013 1.3 0 f 0 b 0 b 0.3 bc

Karate Z 0.009 5.8 0 f 0 b 0 b 0 c Karate Z 0.021 6.5 0.5 ef 0 b 0 b 0 c Tracer 0.063 6.3 0.8 def 0 b 0 b 0 c Tracer 0.094 5.0 0.8 def 0 b 0 b 0 c

Steward SC 0.045 9.8 3.0 ab 0 b 0.8 ab 0 c Steward SC 0.055 7.8 1.3 cdef 1.3 a 0 b 0.3 bc Steward SC 0.065 7.8 2.3 bcd 0 b 0.3 b 0.3 bc Steward SC 0.090 4.0 0.3 ef 0 b 0.3 b 0 c Asana XL 0.036 3.5 0.5 ef 0 b 0 b 0 c

Lannate LV 0.380 7.3 0 f 0 b 0.3 b 5 b Intrepid 240SC 0.030 6.3 2.8 abc 0 b 0 b 0 c Intrepid 240SC 0.060 4.3 3.3 ab 0 b 0 b 0 c Intrepid 240SC 0.125 8.5 4.5 a 0 b 0 b 0 c

Dimilin 2L 0.063 4.0 3.0 ab 0 b 0 b 0 c Orthene 90S 0.747 7.3 0.3 ef 0 b 0 b 0 c Orthene 90S 0.900 3.8 0 f 0 b 0 b 0 c

NS aMeans in a column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT). bBefore application


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Table 2. Soybean insecticide evaluations (green cloverworm). Beaumont, TX. 2000. 0 no. green cloverworm/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated -- 0 0 b 0 0 0.3

Experimental 0.002 0.5 0.3 b 0 0 0 Experimental 0.004 0 0 b 0 0 0 Experimental 0.007 0 0.8 a 0 0 0 Experimental 0.009 0 0 b 0 0 0 Experimental 0.011 0.3 0 b 0 0 0 Experimental 0.013 0 0 b 0 0 0

Karate Z 0.009 0 0 b 0 0 0 Karate Z 0.021 0.8 0 b 0 0 0 Tracer 0.063 0 0 b 0 0 0 Tracer 0.094 0.3 0 b 0 0 0

Steward SC 0.045 0.3 0 b 0 0.3 0 Steward SC 0.055 0 0 b 0 0 0.3 Steward SC 0.065 0 0 b 0 0 0 Steward SC 0.090 0 0 b 0 0 0 Asana XL 0.036 0 0 b 0 0 0

Lannate LV 0.380 0.5 0 b 0 0 0 Intrepid 240SC 0.030 0.3 0 b 0 0 0 Intrepid 240SC 0.060 0 0 b 0 0 0 Intrepid 240SC 0.125 0 0 b 0 0 0

Dimilin 2L 0.063 0.3 0.3 b 0 0 0 Orthene 90S 0.747 0 0 b 0 0 0 Orthene 90S 0.900 0 0 b 0 0 0

NS NS NS NS aMeans in a column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT). bBefore application


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Table 3. Soybean insecticide evaluations (loopers – soybean and cabbage). Beaumont, TX. 2000.

0 no. loopers/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated -- 0 0 0 0 0

Experimental 0.002 0.8 0 0 0 0 Experimental 0.004 0.3 0 0 0 0 Experimental 0.007 0.3 0 0 0 0 Experimental 0.009 0.5 0 0.3 0 0 Experimental 0.011 0 0 0 0 0 Experimental 0.013 0 0 0 0 0

Karate Z 0.009 0.3 0 0 0 0 Karate Z 0.021 0 0.3 0 0 0 Tracer 0.063 0 0 0 0 0 Tracer 0.094 0 0 0 0 0

Steward SC 0.045 0 0 0 0 0 Steward SC 0.055 0.3 0 0 0 0 Steward SC 0.065 0.3 0 0 0 0 Steward SC 0.090 0.3 0.3 0 0 0 Asana XL 0.036 0 0 0 0 0

Lannate LV 0.380 0.3 0 0 0 0 Intrepid 240SC 0.030 0 0 0 0 0 Intrepid 240SC 0.060 0 0.3 0 0 0 Intrepid 240SC 0.125 0 0 0 0 0

Dimilin 2L 0.063 0 0 0 0 0 Orthene 90S 0.747 0.3 0 0 0 0 Orthene 90S 0.900 0.3 0 0 0 0

NS NS NS NS NS aMeans in a column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT). bBefore application


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Table 4. Soybean insecticide evaluations (lepidopteran larvae – velvetbean caterpillar, green cloverworm and loopers). Beaumont, TX. 2000.

0 no. lepidopteran larvae/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated -- 4.0 3.0 ab 1.5 a 1.8 a 1.5 a

Experimental 0.002 7.0 0.8 efg 1.3 ab 1.5 a 0.5 b Experimental 0.004 4.3 1.0 efg 0.3 c 0 c 0 c Experimental 0.007 6.8 0.8 efg 0 c 0 c 0 c Experimental 0.009 11.5 1.3 cdef 0.5 bc 0 c 0 c Experimental 0.011 3.0 0.5 fg 0 c 0 c 0 c Experimental 0.013 1.3 0 g 0 c 0 c 0.3 bc

Karate Z 0.009 6.0 0 g 0 c 0 c 0 c Karate Z 0.021 7.3 0.8 fg 0 c 0 c 0 c Tracer 0.063 6.3 0.8 efg 0 c 0 c 0 c Tracer 0.094 5.3 0.8 efg 0 c 0 c 0 c

Steward SC 0.045 10.0 3.0 abc 0 c 1.0 ab 0 c Steward SC 0.055 8.0 1.3 defg 1.3 ab 0 c 0.5 bc Steward SC 0.065 8.0 2.3 bcde 0 c 0.3 bc 0.3 bc Steward SC 0.090 4.3 0.5 fg 0 c 0.3 bc 0 c Asana XL 0.036 3.5 0.5 fg 0 c 0 c 0 c

Lannate LV 0.380 8.0 0 g 0 c 0.3 bc 0.5 bc Intrepid 240SC 0.030 6.5 2.8 abcd 0 c 0 c 0 c Intrepid 240SC 0.060 4.3 3.5 ab 0 c 0 c 0 c Intrepid 240SC 0.125 8.5 4.5 a 0 c 0 c 0 c

Dimilin 2L 0.063 4.3 3.3 ab 0 c 0 c 0 c Orthene 90S 0.747 7.5 0.3 fg 0 c 0 c 0 c Orthene 90S 0.900 4.0 0 g 0 c 0 c 0 c

NS aMeans in a column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT). bBefore application


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Table 5. Soybean insecticide evaluations (stink bug nymphs). Beaumont, TX. 2000. 0 no. stink bug nymphs/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0 0 0 1.3 abc 0.3

Experimental 0.002 0 0 0.3 0 d 0 Experimental 0.004 0 0 0 0.3 cd 0 Experimental 0.007 0 0 0 0 d 0.5 Experimental 0.009 0 0 0 0 d 0 Experimental 0.011 0 0 0.3 0 d 0.3 Experimental 0.013 0 0 0 0.5 bcd 0.3

Karate Z 0.009 0 0 0.3 0 d 0 Karate Z 0.021 0 0 0 0 d 0 Tracer 0.063 0 0 0 4.0 a 0 Tracer 0.094 0 0 0.3 0 d 0.8

Steward SC 0.045 0 0 0.3 1.0 bcd 0.3 Steward SC 0.055 0 0 0 1.8 ab 0 Steward SC 0.065 0 0 0.3 0.3 cd 0 Steward SC 0.090 0 0 0.3 0 d 0 Asana XL 0.036 0 0 0 0.3 cd 1.0

Lannate LV 0.380 0 0 0 0 d 0.3 Intrepid 240SC 0.030 0 0 0 0.5 bcd 0.3 Intrepid 240SC 0.060 0 0 0 0 d 0 Intrepid 240SC 0.125 0 0 0 0.5 bcd 0

Dimilin 2L 0.063 0 0 0 0 d 0 Orthene 90S 0.747 0 0 0 0.3 cd 0.3 Orthene 90S 0.900 0 0.3 0 0.5 bcd 0



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Table 6. Soybean insecticide evaluations (stink bug adults – brown stink bug, southern green stink bug and green stink bug). Beaumont, TX. 2000.

0 no. stink bug adults/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0 0.5 0.8 0.3 0.3 bc

Experimental 0.002 0.3 0 1.0 0.5 0 c Experimental 0.004 0.5 0.5 1.0 0.3 0.3 bc Experimental 0.007 0 0.5 0 0.5 0.5 bc Experimental 0.009 0.3 0.3 1.5 0.5 0.3 bc Experimental 0.011 0.3 0.8 0.3 0.8 0 c Experimental 0.013 0.3 0.5 0.3 0.8 0.3 bc

Karate Z 0.009 0.3 0 0.8 0.8 0 c Karate Z 0.021 0 0 0.5 0.5 0 c Tracer 0.063 0.5 0.8 0.3 0.5 0 c Tracer 0.094 0 0.8 0.5 0.5 1.8 a

Steward SC 0.045 0.5 0.3 1.3 1.0 0.5 bc Steward SC 0.055 0 0 0.8 0.5 1.0 ab Steward SC 0.065 0 0 0.3 0.8 0.8 bc Steward SC 0.090 0 0 0.3 0.5 0 c Asana XL 0.036 0 0.5 0.3 0.8 0 c

Lannate LV 0.380 0 0 0.8 0.5 0 c Intrepid 240SC 0.030 0.3 0.3 1.0 0.5 0.5 bc Intrepid 240SC 0.060 0.5 0 0 0.8 0.3 bc Intrepid 240SC 0.125 0.5 0 0.3 0 0.3 bc

Dimilin 2L 0.063 0 0 0.8 1.0 0.3 bc Orthene 90S 0.747 0.3 0 0 0.5 0 c Orthene 90S 0.900 0 0.3 0 0 0.8 abc



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Table 7. Soybean insecticide evaluations (stink bug nymphs and adults). Beaumont, TX. 2000.

0 no. stink bug nymphs and adults/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0 0.5 0.8 1.5 0.5

Experimental 0.002 0.3 0.5 0.3 1.3 0.5 Experimental 0.004 0.3 0.8 0.5 0.8 0.3 Experimental 0.007 0.3 0.3 1.5 0.5 0.3 Experimental 0.009 0 0.5 0 0.5 1.0 Experimental 0.011 0.5 0.5 1.0 0.5 0.3 Experimental 0.013 0.3 0 1.3 0.5 0

Karate Z 0.009 0.3 0 1.0 0.8 0 Karate Z 0.021 0 0 0.5 0.5 0 Tracer 0.063 0.5 0.8 0.3 4.5 0 Tracer 0.094 0 0.8 0.8 0.5 2.5

Steward SC 0.045 0.5 0.3 1.5 2.0 0.8 Steward SC 0.055 0 0 0.8 2.3 1.0 Steward SC 0.065 0 0 0.5 1.0 0.8 Steward SC 0.090 0 0 0.5 0.5 0 Asana XL 0.036 0 0.5 0.3 1.0 1.0

Lannate LV 0.380 0 0 0.8 0.5 0.3 Intrepid 240SC 0.030 0.3 0.3 1.0 1.0 0.8 Intrepid 240SC 0.060 0.5 0 0 0.8 0.3 Intrepid 240SC 0.125 0.5 0 0.3 0.5 0.3

Dimilin 2L 0.063 0 0 0.8 1.0 0.3 Orthene 90S 0.747 0.3 0 0 0.8 0.3 Orthene 90S 0.900 0 0.5 0 0.5 0.8

NS NS NS NS NS a Means in a column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT). bBefore application


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Table 8. Soybean insecticide evaluations (threecornered alfalfa hopper nymphs). Beaumont, TX. 2000.

0 no. threecornered alfalfa hopper nymphs/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0.8 0 0 1.0 bcd 0.5 abc

Experimental 0.002 0.5 0 0.3 0.5 cde 0.5 bc Experimental 0.004 0 0.3 0.3 1.3 bc 0.3 bc Experimental 0.007 1.5 0.3 0.3 0 e 0 c Experimental 0.009 1.0 0.3 0.5 0 e 0 c Experimental 0.011 0.5 0.3 0 0 e 0 c Experimental 0.013 0.3 0.8 0 0 e 0.3 bc

Karate Z 0.009 0.3 0 0.3 0 e 0 c Karate Z 0.021 1.0 0.5 0.5 0.5 cde 0 c Tracer 0.063 0.3 0.3 0.8 2.5 a 1.5 a Tracer 0.094 0.8 0.3 1.0 0.5 cde 1.0 ab

Steward SC 0.045 0.8 0.5 0.5 1.3 bcde 0.5 bc Steward SC 0.055 0.3 0 0.3 0 e 0.5 bc Steward SC 0.065 1.0 0 0.3 0.8 cde 0.8 abc Steward SC 0.090 0.5 0.3 0.3 1.3 bc 0.8 abc Asana XL 0.036 0.5 0.3 0 0.3 de 0 c

Lannate LV 0.380 0.5 0.3 0.3 0 e 0.3 bc Intrepid 240SC 0.030 0.5 0.5 0 1.0 bcd 0.8 abc Intrepid 240SC 0.060 0.8 0.3 0 0.8 bcde 0.3 bc Intrepid 240SC 0.125 0.3 0 0.3 0.5 cde 0.3 bc

Dimilin 2L 0.063 0.8 0.3 0.3 1.0 ab 1.0 ab Orthene 90S 0.747 0.8 0 0 0 e 0 c Orthene 90S 0.900 1.3 0 0.8 0.3 de 0 c

NS NS NS aMeans in a column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT). bBefore application


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Table 9. Soybean insecticide evaluations (threecornered alfalfa hopper adults). Beaumont, TX. 2000.

0 no. threecornered alfalfa hopper adults/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0.8 2.3 3.0 4.5 abcde 1.8 cde

Experimental 0.002 2.0 1.5 2.0 4.5 bcdef 2.0 bcde Experimental 0.004 1.0 0.8 1.3 4.0 bcdef 4.5 abc Experimental 0.007 4.0 1.3 2.3 5.3 abcde 4.0 abcd Experimental 0.009 1.8 0.3 1.0 2.8 defg 3.0 abcde Experimental 0.011 2.0 0.8 0.8 2.5 defg 1.8 cde Experimental 0.013 1.5 0.8 1.0 1.8 efg 4.5 abc

Karate Z 0.009 2.5 1.0 0.5 4.0 bcdef 3.3 abcde Karate Z 0.021 2.0 0.8 0.5 1.3 fg 3.3 abcde Tracer 0.063 2.5 2.5 5.0 6.0 abcd 6.8 a Tracer 0.094 2.3 1.3 2.0 4.3 bcde 4.3 abcd

Steward SC 0.045 1.8 0.5 3.8 9.0 a 6.0 a Steward SC 0.055 1.5 1.0 3.3 3.8 cdefg 3.3 abcde Steward SC 0.065 2.0 1.0 2.5 7.5 ab 5.8 a Steward SC 0.090 1.5 1.5 2.0 4.0 cdefg 1.5 de Asana XL 0.036 1.0 1.0 2.5 2.8 defg 2.0 bcde

Lannate LV 0.380 0.8 0.3 1.5 3.0 cdefg 5.0 ab Intrepid 240SC 0.030 1.5 2.0 2.5 5.0 abcde 5.0 abc Intrepid 240SC 0.060 1.5 2.0 2.5 2.8 defg 3.0 abcde Intrepid 240SC 0.125 2.0 2.3 2.8 8.0 ab 2.3 bcde

Dimilin 2L 0.063 1.3 1.5 2.0 6.8 abc 5.0 abc Orthene 90S 0.747 2.5 0.3 1.0 0.8 g 2.0 bcde Orthene 90S 0.900 3.3 0 0.8 0.8 g 1.0 e



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Table 10. Soybean insecticide evaluations (threecornered alfalfa hopper nymphs and adults). Beaumont, TX. 2000.

0 no. threecornered alfalfa hopper nypmhs and adults/10 sweepsa

Rate Days after application Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 1.5 2.3 3.0 5.5 abcd 2.5 cdefg

Experimental 0.002 2.5 1.5 2.3 5.0 bcdef 2.5 cdefg Experimental 0.004 1.0 1.0 1.5 5.3 abcd 4.8 abcdef Experimental 0.007 5.5 1.5 2.5 5.3 abcde 4.0 abcdef Experimental 0.009 2.8 0.5 1.5 2.8 defgh 3.0 bcdefg Experimental 0.011 2.5 1.0 0.8 2.5 defgh 1.8 fg Experimental 0.013 1.8 1.5 1.0 1.8 efgh 4.8 abcdef

Karate Z 0.009 2.8 1.0 0.8 4.0 cdef 3.3 bcdefg Karate Z 0.021 3.0 1.3 1.0 1.8 fgh 3.3 bcdefg Tracer 0.063 2.8 2.8 5.8 8.5 abc 8.3 a Tracer 0.094 3.0 1.5 3.0 4.8 bcde 5.3 abcde

Steward SC 0.045 2.5 1.0 4.3 9.8 a 6.5 ab Steward SC 0.055 1.8 1.0 3.5 3.8 defgh 3.8 abcdefg Steward SC 0.065 3.0 1.0 2.8 8.3 ab 6.5 ab Steward SC 0.090 2.0 1.8 2.3 5.5 bcde 2.3 efg Asana XL 0.036 1.5 1.3 2.5 3.0 defgh 2.0 defg

Lannate LV 0.380 1.3 0.5 1.8 3.0 defgh 5.3 abcde Intrepid 240SC 0.030 2.0 2.5 2.5 6.0 abcd 5.8 abcd Intrepid 240SC 0.060 2.3 2.3 2.5 3.5 defg 3.3 bcdefg Intrepid 240SC 0.125 2.3 2.3 3.0 8.5 abc 2.5 cdefg

Dimilin 2L 0.063 2.0 1.8 2.3 8.5 ab 6.0 abc Orthene 90S 0.747 3.3 0.3 1.0 0.8 h 2.0 defg Orthene 90S 0.900 4.5 0 1.5 1.0 gh 1.0 g



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Table 11. Soybean insecticide evaluations (banded cucumber beetle). Beaumont, TX. 2000. 0 no. banded cucumber beetle/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0 0 0 0 0

Experimental 0.002 0 0 0 0 0 Experimental 0.004 0.3 0 0 0 0 Experimental 0.007 0 0 0 0 0 Experimental 0.009 0 0 0 0 0 Experimental 0.011 0.3 0 0 0 0 Experimental 0.013 0 0 0 0 0

Karate Z 0.009 0 0 0 0 0 Karate Z 0.021 0 0 0 0 0 Tracer 0.063 0 0 0 0 0 Tracer 0.094 0.3 0 0 0 0

Steward SC 0.045 0 0 0 0 0 Steward SC 0.055 0 0 0 0 0 Steward SC 0.065 0.3 0 0 0 0 Steward SC 0.090 0 0 0 0 0 Asana XL 0.036 0 0 0 0 0

Lannate LV 0.380 0.3 0 0 0 0 Intrepid 240SC 0.030 0 0 0 0 0 Intrepid 240SC 0.060 0 0 0 0 0 Intrepid 240SC 0.125 0 0 0 0 0

Dimilin 2L 0.063 0 0 0 0 0 Orthene 90S 0.747 0 0 0 0 0 Orthene 90S 0.900 0 0 0 0 0



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Table 12. Soybean insecticide evaluations (spotted cucumber beetle). Beaumont, TX. 2000. 0 no. spotted cucumber beetle/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0 0 0 0 0

Experimental 0.002 0.3 0 0 0 0.3 Experimental 0.004 0 0 0 0 0.3 Experimental 0.007 0 0 0 0 0 Experimental 0.009 0 0 0 0 0 Experimental 0.011 0 0 0 0 0 Experimental 0.013 0 0 0 0 0

Karate Z 0.009 0 0 0 0 0 Karate Z 0.021 0 0 0 0 0 Tracer 0.063 0 0 0 0 0 Tracer 0.094 0 0 0 0.3 0

Steward SC 0.045 0 0 0 0 0 Steward SC 0.055 0 0 0 0 0 Steward SC 0.065 0 0 0 0 0 Steward SC 0.090 0 0 0 0 0 Asana XL 0.036 0 0 0 0 0

Lannate LV 0.380 0 0 0 0 0 Intrepid 240SC 0.030 0 0 0 0.5 0 Intrepid 240SC 0.060 0 0.3 0 0 0 Intrepid 240SC 0.125 0 0 0 0.3 0

Dimilin 2L 0.063 0 0 0 0 0 Orthene 90S 0.747 0 0 0 0 0 Orthene 90S 0.900 0 0 0 0 0



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Table 13. Soybean insecticide evaluations (orthopteran nymphs and adults). Beaumont, TX. 2000.

0 no. orthopteran nymphs and adults/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0.8 0.3 0.3 1.8 0.8

Experimental 0.002 1.3 0.5 0.5 0.3 0 Experimental 0.004 1.5 0 1.3 0.5 0 Experimental 0.007 1.0 0.3 1.0 0.8 0.5 Experimental 0.009 0.5 1.3 0.8 0 0.5 Experimental 0.011 0 0.8 1.3 0.3 0.5 Experimental 0.013 0.8 0.5 0.3 2.5 0.5

Karate Z 0.009 3.8 0.3 4.5 0.5 0.5 Karate Z 0.021 0.5 1.0 0.3 0 0 Tracer 0.063 0.3 0.3 2.3 0.8 0.5 Tracer 0.094 0.5 1.5 9.8 1.5 1.0

Steward SC 0.045 1.5 1.0 6.3 0.5 0.3 Steward SC 0.055 2.0 0.5 0.3 1.5 0.3 Steward SC 0.065 1.0 1.5 0.3 0 0.8 Steward SC 0.090 0.3 0.5 0.5 0 0.3 Asana XL 0.036 0.3 0.8 0.5 2.5 0.3

Lannate LV 0.380 0.5 1.0 1.3 1.3 0.8 Intrepid 240SC 0.030 0.8 0.8 1.3 0.8 0.5 Intrepid 240SC 0.060 1.3 1.0 1.5 1.5 0.8 Intrepid 240SC 0.125 0 0.8 0.8 0.8 0.3

Dimilin 2L 0.063 0.8 1.8 0.8 0.5 1.0 Orthene 90S 0.747 1.8 0 0 0.5 0.5 Orthene 90S 0.900 1.3 0.8 0.3 0.3 0



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Table 14. Soybean insecticide evaluations (damsel bugs). Beaumont, TX. 2000. 0 no. damsel bugs/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated -- 0 c 0.3 0.3 ab 1.5 0.8

Experimental 0.002 1.0 ab 0.8 0 b 0.3 0.3 Experimental 0.004 1.3 ab 0 0 b 1.0 1.0 Experimental 0.007 0.3 bc 1.0 0 b 0.3 0.8 Experimental 0.009 0 c 1.0 0.3 ab 1.0 0.3 Experimental 0.011 1.5 ab 0.3 0 b 0.8 0.3 Experimental 0.013 0.3 bc 0 0 b 0.3 0

Karate Z 0.009 0.3 bc 0.3 0.3 ab 0.3 0.3 Karate Z 0.021 1.3 ab 0.5 0 b 0.5 0.3 Tracer 0.063 0.8 abc 0.5 0 b 0.5 0.8 Tracer 0.094 0.3bc 0.3 0 b 0.3 0.5

Steward SC 0.045 0 c 0.5 0.8 a 1.0 1.3 Steward SC 0.055 0.5 bc 0.5 0.3 ab 0.8 0.5 Steward SC 0.065 0 c 0.3 0 b 1.8 0 Steward SC 0.090 0.5 bc 0.3 0.8 a 1.0 0.3 Asana XL 0.036 0.3 bc 1.0 0.0 b 0.5 0.3

Lannate LV 0.380 1.8 a 0 0 b 0.3 0.3 Intrepid 240SC 0.030 0 c 0.3 0.5 ab 1.0 1.0 Intrepid 240SC 0.060 0 c 0.3 0.5 ab 0.3 0.8 Intrepid 240SC 0.125 1.3 ab 0.5 0.5 ab 0.3 0.3

Dimilin 2L 0.063 0.3 bc 0 0.5ab 1.0 0.3 Orthene 90S 0.747 0 c 0 0 b 0 0 Orthene 90S 0.900 0.5 bc 0 0.3 ab 0 0



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Table 15. Soybean insecticide evaluations (assassin bugs). Beaumont, TX. 2000. 0 no. assassin bugs/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0 0.3 0.8 0.5 0

Experimental 0.002 0.3 0.8 0 0.3 0.3 Experimental 0.004 0.8 0 1.0 0.3 0 Experimental 0.007 0.8 0.5 0.3 0.8 0 Experimental 0.009 0.5 0 0 0.3 0 Experimental 0.011 0.5 0 0 0.3 0 Experimental 0.013 0.5 0 0 0 0

Karate Z 0.009 1.8 0 0.3 0.5 0 Karate Z 0.021 0.8 0.3 0 0 0 Tracer 0.063 0.3 0 0.3 0.3 0 Tracer 0.094 0.3 0.3 0.8 0 0

Steward SC 0.045 0.5 0.5 0.3 0.5 0 Steward SC 0.055 0 0.3 0 2.3 0 Steward SC 0.065 0.5 0.5 0.3 1.5 1.0 Steward SC 0.090 0.5 0.3 0.3 0.8 0.5 Asana XL 0.036 0.3 0.5 0.5 0.3 0.3

Lannate LV 0.380 1.0 0.5 0.5 0.3 0.3 Intrepid 240SC 0.030 0.3 0.5 0.5 0.5 1.0 Intrepid 240SC 0.060 0.8 0.3 0 0.5 0 Intrepid 240SC 0.125 0.5 0 0.3 0.3 0

Dimilin 2L 0.063 0 0.3 0.3 0.5 1.0 Orthene 90S 0.747 0.8 0.3 0 0 0.3 Orthene 90S 0.900 1.0 0.3 0.5 0.5 0.3



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Table 16. Soybean insecticide evaluations (bigeyed bugs). Beaumont, TX. 2000.

0 no. bigeyed bugs/10 sweepsa

Rate Days after application Treatment (lb AI/ac) Bab 1 5 11 22 Untreated – 0.5 0.5 0 2.0 0.3

Experimental 0.002 0 0.3 0.5 0.8 0 Experimental 0.004 0.8 0.5 0.5 0.3 0.3 Experimental 0.007 0.5 0 1.0 0 0.3 Experimental 0.009 0.8 0.5 1.3 0.8 0 Experimental 0.011 0.8 0 0.8 0 0 Experimental 0.013 2.3 0 0 1.0 0

Karate Z 0.009 1.3 0.3 1.0 0.3 0.3 Karate Z 0.021 1.0 0.5 0.3 0 0.3 Tracer 0.063 0 0.3 0.3 1.3 0.5 Tracer 0.094 1.0 0.3 0 0.5 0.5

Steward SC 0.045 0.5 0.3 0.3 0 0.5 Steward SC 0.055 0.8 0.3 2.8 0.8 0.5 Steward SC 0.065 0.5 0 0.8 0 1.3 Steward SC 0.090 1.0 0.8 0.5 0.8 0.3 Asana XL 0.036 0.5 0 0.3 1.3 0

Lannate LV 0.380 1.8 0.5 1.0 0.5 0.5 Intrepid 240SC 0.030 1.0 0.3 0.5 0.3 0.3 Intrepid 240SC 0.060 1.3 1.0 0.8 1.0 0.5 Intrepid 240SC 0.125 0.8 0.3 1.0 0.8 0.3

Dimilin 2L 0.063 0.8 0 1.0 0 0 Orthene 90S 0.747 1.0 0 0 0 0 Orthene 90S 0.900 0 0.3 0.3 0.8 0



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Table 17. Soybean insecticide evaluations (spiders). Beaumont, TX. 2000. 0 no. spiders/10 sweepsa Rate Days after application

Treatment (lb AI/ac) Bab 1 5 11 22 Untreated -- 3.5 3.3 2.3 1.8 3.0

Experimental 0.002 3.0 1.3 2.8 6.8 1.3 Experimental 0.004 2.0 2.3 3.5 1.8 1.3 Experimental 0.007 2.8 4.5 2.3 2.8 1.8 Experimental 0.009 2.0 2.3 2.0 0.8 1.3 Experimental 0.011 2.5 1.3 3.3 2.0 0.5 Experimental 0.013 4.5 3.0 2.5 2.3 2.3

Karate Z 0.009 2.3 1.8 2.0 1.3 1.8 Karate Z 0.021 4.3 2.5 2.5 1.8 2.8 Tracer 0.063 0.5 1.8 3.0 1.8 3.5 Tracer 0.094 2.5 2.3 1.3 2.8 4.0

Steward SC 0.045 3.0 2.3 2.5 4.5 2.8 Steward SC 0.055 2.5 1.8 3.8 2.8 1.3 Steward SC 0.065 2.3 0.3 3.0 3.0 1.3 Steward SC 0.090 1.5 2.0 3.5 3.5 2.5 Asana XL 0.036 1.8 2.5 2.3 3.5 3.0

Lannate LV 0.380 2.5 1.5 2.0 1.8 1.3 Intrepid 240SC 0.030 2.3 1.3 1.3 1.3 0.8 Intrepid 240SC 0.060 2.3 1.0 1.8 2.8 1.5 Intrepid 240SC 0.125 2.0 1.0 1.3 0.3 0.8

Dimilin 2L 0.063 2.0 2.5 4.3 2.5 2.0 Orthene 90S 0.747 5.8 1.3 1.3 2.0 2.0 Orthene 90S 0.900 2.0 0.5 2.3 2.3 1.0



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Table 18. Soybean insecticide evaluations (yield). Beaumont, TX. 2000.

Rate Yield (bu/A) adjusted to 13% moisture

Treatment (lb AI/ac) I II III IV 0a

Untreated -- 10.0 10.6 8.8 6.5 9.0

Experimental 0.002 14.7 13.5 19.5 23.8 17.9

Experimental 0.004 13.4 15.7 7.1 7.2 10.9

Experimental 0.007 16.6 9.3 5.4 12.6 11.0

Experimental 0.009 15.5 15.6 16.6 21.8 17.4

Experimental 0.011 9.3 13.6 25.9 7.7 14.1

Experimental 0.013 12.3 10.8 8.8 20.4 13.1

Karate Z 0.009 12.4 12.9 14.7 21.4 15.4

Karate Z 0.021 8.1 11.1 13.5 13.1 11.5

Tracer 0.063 14.0 6.7 4.7 9.3 8.7

Tracer 0.094 10.3 9.6 10.4 25.3 13.9

Steward SC 0.045 10.3 8.8 9.3 23.5 13.0

Steward SC 0.055 13.3 14.5 20.1 19.8 16.9

Steward SC 0.065 8.3 9.0 7.3 12.6 9.3

Steward SC 0.090 6.0 7.9 16.2 11.1 10.3

Asana XL 0.036 14.6 12.7 14.9 6.3 12.1

Lannate LV 0.380 15.0 10.7 16.0 9.6 12.8

Intrepid 240SC 0.030 15.4 10.5 6.1 28.0 15.0

Intrepid 240SC 0.060 16.3 11.0 10.2 15.6 13.3

Intrepid 240SC 0.125 12.6 10.2 11.0 31.5 16.3

Dimilin 2L 0.063 6.8 6.9 10.6 5.1 7.4

Orthene 90S 0.747 12.2 9.9 21.5 13.0 14.2

Orthene 90S 0.900 12.8 18.9 8.2 8.6 12.1

NS aMeans in this column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT).


125


Table 19. Soybean insecticide evaluations (seed quality). Beaumont, TX. 2000.

Rate Seed quality (1-5)a

Treatment (lb AI/ac) I II III IV 0b

Untreated -- 3.0 3.0 2.5 3.0 2.9 a

Experimental 0.002 2.5 2.5 2.5 2.5 2.5 bcd






Karate Z 0.009 2.5 2.5 2.5 2.0 2.4 cd

Karate Z 0.021 2.5 2.5 2.5 2.5 2.5 bcd

Tracer 0.063 2.5 3.0 2.5 3.0 2.8 ab

Tracer 0.094 3.0 2.5 3.0 2.5 2.8 ab

Steward SC 0.045 3.0 3.0 2.5 2.5 2.8 ab

Steward SC 0.055 3.0 3.0 2.5 2.5 2.8 ab

Steward SC 0.065 3.0 3.0 2.5 2.5 2.8 ab

Steward SC 0.090 3.0 3.0 2.5 2.5 2.8 ab

Asana XL 0.036 2.5 3.0 2.5 2.5 2.6 abc

Lannate LV 0.380 2.5 2.5 2.5 2.5 2.5 bcd

Intrepid 240SC 0.030 2.5 2.5 2.5 2.5 2.5 bcd

Intrepid 240SC 0.060 2.5 2.5 2.5 2.5 2.5 bcd

Intrepid 240SC 0.125 2.5 2.5 2.5 2.0 2.4 cd

Dimilin 2L 0.063 2.5 2.5 2.5 2.5 2.5 bcd

Orthene 90S 0.747 2.5 2.5 2.0 2.0 2.3 d

Orthene 90S 0.900 2.5 2.5 2.0 2.0 2.3 d aSeed quality (visual estimate): 1 = excellent, 5 = very poor bMeans in this column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT).


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Table 20. Soybean insecticide evaluations (seed size). Beaumont, TX. 2000.

Rate Seed size (no. seed/lb)

Treatment (lb AI/ac) I II III IV 0a

Untreated -- 3660 4120 4400 4930 4280

Experimental 0.002 3660 4160 3690 3690 3800

Experimental 0.004 3780 3600 4630 4450 4120

Experimental 0.007 3410 4320 4830 4090 4160

Experimental 0.009 3630 4050 3940 3750 3840

Experimental 0.011 3880 3980 3570 4580 4000

Experimental 0.013 3910 4120 4320 3880 4060

Karate Z 0.009 3940 3940 3880 3880 3910

Karate Z 0.021 3940 3940 4200 4240 4080

Tracer 0.063 3720 4580 4630 4580 4380

Tracer 0.094 3570 4320 4450 3630 3990

Steward SC 0.045 3810 4280 4400 3630 4030

Steward SC 0.055 3940 3840 3880 4200 3970

Steward SC 0.065 4540 4280 4540 4200 4390

Steward SC 0.090 4830 4830 4160 4880 4680

Asana XL 0.036 3750 4090 4090 5100 4260

Lannate LV 0.380 3660 4280 3810 4730 4120

Intrepid 240SC 0.030 3570 4010 4320 3490 3850

Intrepid 240SC 0.060 3630 4400 4580 4490 4280

Intrepid 240SC 0.125 3690 4280 4360 3720 4010

Dimilin 2L 0.063 4780 4540 4360 4630 4580

Orthene 90S 0.747 4200 4490 3600 4400 4170

Orthene 90S 0.900 3750 3570 4730 4680 4180

NS aMeans in this column followed by the same or no letter are not significantly different at the 5% level (ANOVA and DMRT).

evaluation of selected insecticides for control of soybean ... annual report_way...conditions were...

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