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Control of the Codling Moth with Guthion, Imidan and Oil, 1994

Control of the Codling Moth with Guthion, Imidan and Oil, 1994 Downloaded from https://academic.oup.com/amt/article-abstract/20/1/6/4639871 by DeepDyve user on 02 August 2020 6 Arthropod Management Tests, Vol. 20 A: POME FRUITS All B. thuringiensis treatments had significantly lower OBLR larval densities compared with the untreated plot. However, there were no differences in OBLR larval densities between B. thuringiensis treatments. OBLR densities were high, and weather conditions were good during treatment application. Larvae Rate per tree Treatment/form form/100 gal 29 Jul Dipel 2X 4 oz 0.9a Javelin WG 4 oz 2.1a MVP 24 fl oz 2.2a 16 A oz + 2 fl oz 2.1a MVP + B1956 Biobit 4 oz 1.7a Cutlass 4 oz 1.9a Untreated 9.5b Means in the same column without letters or followed by the same letter are not significantly different, P = 0.05 (SNK). APPLE: Malus domestica Borkhauser 'Delicious' J. F. Brunner, M. D. Doerr, and L. O. Smith (10A) Obliquebanded leafroller (OBLR); Choristoneura rosaceana Washington State University (Harris) Tree Fruit Research and Extension Center 1100 N. Western Avenue Wenatchee, WA 98801 APPLE, CONTROL OF THE OBLIQUEBANDED LEAFROLLER WITH BACILLUS THURINGIENSIS AND CRYOLITE IN SUM­ MER, 1994: Different B. thuringiensis products and Kryocide (cryolite) were evaluated for their ability to control OBLR larvae of the summer generation. The test was conducted in an apple orchard near Milton-Freewater, OR. The trees were 3-yr-old 'Delicious' on dwarfing roots. Treatments were applied to four-tree plots replicated five times using a RCB design. All treatments were applied on 23, 30 Jun and 11 Jul with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gpa. The post-treatment evaluation was made on 27 Jul. The number of live OBLR larvae on all four trees of a treatment replication was counted. OBLR larval density in the orchard was extremely high. All treatments were better than the untreated check. There was no statistical difference between any of the B. thuringiensis treatments. There was a slight rate response noted with Kryocide, but differences in mean OBLR densities were not statistically significant. Weather was good at the time of applications, except for 23 Jun which was slightly windy. Larvae per Rate 4 trees Treatment" form/100 gal 27 Jul Dipel 2X 4 oz 54.0a Javelin WG 4 oz 45.6a Agree 8 oz 62.8a Kryocide 48 oz 76.0ab Kryocide 32 oz 106.4b Biobit 16 fl oz 61.6a Check 214.4c Means in the same column followed by the same letter are not significantly different, P 0.05 (Fisher's Protected LSD). "Leafroller development at the first application was approximately 50% egg hatch. APPLE: Malus domestica Borkhauser 'Delicious' J. F. Brunner, L. J. Gut, and M. D. Doerr (HA) Codling moth (CM); Cydia pomonella (L.) Washington State University Tree Fruit Research and Extension Center 1100 N. Western Avenue Wenatchee, WA 98801 CONTROL OF THE CODLING MOTH WITH GUTHION, IMIDAN AND OIL, 1994: Guthion, two formulations of Imidan, and a highly refined insecticidal oil, Orchex 796, were evaluated for their ability to control CM over the entire season. The test was conducted in an apple orchard at the Tree Fruit Research and Extension Center. The trees were 15-yr-old spur type 'Delicious'. Treatments were applied to two-tree plots replicated five times using a RCB design. All treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gpa. Two treatments of Guthion and Imidan were applied against each CM generation, the initial treatment being timed using accumulated degree days following first capture of moths in pheromone traps. Three treatments of Orchex 796 were applied each generation, with the initial application each generation being timed using degree days. The post-treatment evaluation was made on 29 Aug. One hundred apples from one tree per plot were examined, and the number of CM injured fruit was recorded. Downloaded from https://academic.oup.com/amt/article-abstract/20/1/6/4639871 by DeepDyve user on 02 August 2020 A: POME FRUITS Arthropod Management Tests, Vol. 20 7 CM pressure was extremely high. All treatments were better than the untreated check. There was no statistically significant difference in CM control between the organophosphate insecticides tested. No rate response was noted with the Orchex 796 treatments. Orchex suppressed CM injury between 40 and 60 percent. This was consistent with large block studies with less CM pressure at a different location. Weather was good at the time of applications. No. CM injured Rate fruit form/100 gal Timing" per 100 Treatment Guthion 50 WP 8.0 oz 11 May, 2 Jun, 15 Jul, 4 Aug 4.4a Imidan 50 WP 24.0 oz 11 May, 2 Jun, 15 Jul, 4 Aug 3.8a Imidan 70 WP 14.4 oz 11 May, 2 Jun, 15 Jul, 4 Aug 3.6a Orchex 796 32.0 fl oz 11, 24 May, 2, 8 Jun, 15, 29 Jul, 4, 16 Aug 34.0b Orchex 796 48.0 fl oz 11, 24 May, 2, 8 Jun, 15, 29 Jul, 4, 16 Aug 37.5b Orchex 796 64.0 fl oz 11, 24 May, 2, 8 Jun, 15, 29 Jul, 4, 16 Aug 37.5b Orchex 796 96.0 fl oz 11, 24 May, 2, 8 Jun, 15, 29 Jul, 4, 16 Aug 28.8b Untreated — 60.6c Means in the same column followed by the same letter not significantly different (P = 0.05, Fisher's Protected LSD). "The first application against the first and second CM generation was based on an accumulation of 250 (11 May) and 1200 (15 Jul) degree days, respectively, after first moth capture. Degree days were calculated from daily maximum and minimum temperatures using the method described by Baskerville and Emin (Ecol. 50: 514—516, 1969) with a lower threshold of 50°F and upper limit of 88°F. APPLE: Malus domestica Borkhauser 'Delicious' J. F. Brunner, L. J. Gut, and M. D. Doerr (12A) Codling moth (CM); Cydia pomonella (L.) Washington State University Tree Fruit Research and Extension Center 1100 N. Western Avenue Wenatchee, WA 98801 CONTROL OF THE CODLING MOTH WITH GUTHION AND CM GRANULOSIS VIRUS, 1994: Guthion and two formulations of CM granulosis virus, a powder (CGI-9401) and liquid (CGI-9405), were evaluated for their ability to control CM over the entire season. Milk and 45 ml of NU-FILM-P were added to the 25-gal mixture of both virus formulations before application. Powdered milk was used first generation at 1 lb/25 gal, and liquid milk was used second generation at 1 gal/25 gal. The test was conducted in an apple orchard at the Tree Fruit Research and Extension Center. The trees were 15-yr-old spur type 'Delicious' on dwarfing roots. Treatments were applied to two-tree plots replicated five times using a RCB design. All treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gpa. The CM granulosis virus was applied at intervals of 100 degree days following the first application against each CM generation. The first application of all treatments against the first and second CM generation was based on an accumulation of 250 (11 May) and 1200 (15 Jul) degree days, respectively, after first moth capture in pheromone traps. The posttreatment evaluation was made on 30 Aug. One hundred apples from one tree per plot were examined, and the number of CM injured fruit was recorded. Guthion was the only product tested that provided significantly better control than the untreated check. CM pressure was extremely high in this block and could have contributed to the failure of the virus treatments. Furthermore, since only raw virus mixed with milk and NU-FILM-P was applied, a better formulation may add to the efficacy of these products. Weather was good at the time of applications. No. CM injured fruit Rate Treatment Application date per 100 (AI)/acre Guthion 50 WP 16 oz 11 May, 2 Jun, 15 Jul, 4 Aug 3.8a 2 X 10 OB 11, 20, 28 May, 4, 11, 21 Jun, CGI-9401 68.0b 15, 20, 25 Jul, 4, 8, 16 Aug CGI-9401 5 X 10 OB 11, 20, 28 May, 4, 11, 21 Jun, 67.2b 15, 20, 25 Jul, 4, 8, 16 Aug CGI-9405 2 X 10 OB 11, 20, 28 May, 4, 11, 21 Jun, 71.6b 15, 20, 25 Jul, 4, 8, 16 Aug CGI-9405 5 X 10' OB 11, 20, 28 May, 4, 11, 21 Jun, 68.6b 15, 20, 25 Jul, 4, 8, 16 Aug Untreated 61.0b Means in the same column followed by the same letter not significantly different, (P = 0.05, Fisher's Protected LSD). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Control of the Codling Moth with Guthion, Imidan and Oil, 1994

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Publisher
Oxford University Press
Copyright
© 1995, Entomological Society of America
eISSN
2155-9856
DOI
10.1093/amt/20.1.6a
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Abstract

Downloaded from https://academic.oup.com/amt/article-abstract/20/1/6/4639871 by DeepDyve user on 02 August 2020 6 Arthropod Management Tests, Vol. 20 A: POME FRUITS All B. thuringiensis treatments had significantly lower OBLR larval densities compared with the untreated plot. However, there were no differences in OBLR larval densities between B. thuringiensis treatments. OBLR densities were high, and weather conditions were good during treatment application. Larvae Rate per tree Treatment/form form/100 gal 29 Jul Dipel 2X 4 oz 0.9a Javelin WG 4 oz 2.1a MVP 24 fl oz 2.2a 16 A oz + 2 fl oz 2.1a MVP + B1956 Biobit 4 oz 1.7a Cutlass 4 oz 1.9a Untreated 9.5b Means in the same column without letters or followed by the same letter are not significantly different, P = 0.05 (SNK). APPLE: Malus domestica Borkhauser 'Delicious' J. F. Brunner, M. D. Doerr, and L. O. Smith (10A) Obliquebanded leafroller (OBLR); Choristoneura rosaceana Washington State University (Harris) Tree Fruit Research and Extension Center 1100 N. Western Avenue Wenatchee, WA 98801 APPLE, CONTROL OF THE OBLIQUEBANDED LEAFROLLER WITH BACILLUS THURINGIENSIS AND CRYOLITE IN SUM­ MER, 1994: Different B. thuringiensis products and Kryocide (cryolite) were evaluated for their ability to control OBLR larvae of the summer generation. The test was conducted in an apple orchard near Milton-Freewater, OR. The trees were 3-yr-old 'Delicious' on dwarfing roots. Treatments were applied to four-tree plots replicated five times using a RCB design. All treatments were applied on 23, 30 Jun and 11 Jul with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gpa. The post-treatment evaluation was made on 27 Jul. The number of live OBLR larvae on all four trees of a treatment replication was counted. OBLR larval density in the orchard was extremely high. All treatments were better than the untreated check. There was no statistical difference between any of the B. thuringiensis treatments. There was a slight rate response noted with Kryocide, but differences in mean OBLR densities were not statistically significant. Weather was good at the time of applications, except for 23 Jun which was slightly windy. Larvae per Rate 4 trees Treatment" form/100 gal 27 Jul Dipel 2X 4 oz 54.0a Javelin WG 4 oz 45.6a Agree 8 oz 62.8a Kryocide 48 oz 76.0ab Kryocide 32 oz 106.4b Biobit 16 fl oz 61.6a Check 214.4c Means in the same column followed by the same letter are not significantly different, P 0.05 (Fisher's Protected LSD). "Leafroller development at the first application was approximately 50% egg hatch. APPLE: Malus domestica Borkhauser 'Delicious' J. F. Brunner, L. J. Gut, and M. D. Doerr (HA) Codling moth (CM); Cydia pomonella (L.) Washington State University Tree Fruit Research and Extension Center 1100 N. Western Avenue Wenatchee, WA 98801 CONTROL OF THE CODLING MOTH WITH GUTHION, IMIDAN AND OIL, 1994: Guthion, two formulations of Imidan, and a highly refined insecticidal oil, Orchex 796, were evaluated for their ability to control CM over the entire season. The test was conducted in an apple orchard at the Tree Fruit Research and Extension Center. The trees were 15-yr-old spur type 'Delicious'. Treatments were applied to two-tree plots replicated five times using a RCB design. All treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gpa. Two treatments of Guthion and Imidan were applied against each CM generation, the initial treatment being timed using accumulated degree days following first capture of moths in pheromone traps. Three treatments of Orchex 796 were applied each generation, with the initial application each generation being timed using degree days. The post-treatment evaluation was made on 29 Aug. One hundred apples from one tree per plot were examined, and the number of CM injured fruit was recorded. Downloaded from https://academic.oup.com/amt/article-abstract/20/1/6/4639871 by DeepDyve user on 02 August 2020 A: POME FRUITS Arthropod Management Tests, Vol. 20 7 CM pressure was extremely high. All treatments were better than the untreated check. There was no statistically significant difference in CM control between the organophosphate insecticides tested. No rate response was noted with the Orchex 796 treatments. Orchex suppressed CM injury between 40 and 60 percent. This was consistent with large block studies with less CM pressure at a different location. Weather was good at the time of applications. No. CM injured Rate fruit form/100 gal Timing" per 100 Treatment Guthion 50 WP 8.0 oz 11 May, 2 Jun, 15 Jul, 4 Aug 4.4a Imidan 50 WP 24.0 oz 11 May, 2 Jun, 15 Jul, 4 Aug 3.8a Imidan 70 WP 14.4 oz 11 May, 2 Jun, 15 Jul, 4 Aug 3.6a Orchex 796 32.0 fl oz 11, 24 May, 2, 8 Jun, 15, 29 Jul, 4, 16 Aug 34.0b Orchex 796 48.0 fl oz 11, 24 May, 2, 8 Jun, 15, 29 Jul, 4, 16 Aug 37.5b Orchex 796 64.0 fl oz 11, 24 May, 2, 8 Jun, 15, 29 Jul, 4, 16 Aug 37.5b Orchex 796 96.0 fl oz 11, 24 May, 2, 8 Jun, 15, 29 Jul, 4, 16 Aug 28.8b Untreated — 60.6c Means in the same column followed by the same letter not significantly different (P = 0.05, Fisher's Protected LSD). "The first application against the first and second CM generation was based on an accumulation of 250 (11 May) and 1200 (15 Jul) degree days, respectively, after first moth capture. Degree days were calculated from daily maximum and minimum temperatures using the method described by Baskerville and Emin (Ecol. 50: 514—516, 1969) with a lower threshold of 50°F and upper limit of 88°F. APPLE: Malus domestica Borkhauser 'Delicious' J. F. Brunner, L. J. Gut, and M. D. Doerr (12A) Codling moth (CM); Cydia pomonella (L.) Washington State University Tree Fruit Research and Extension Center 1100 N. Western Avenue Wenatchee, WA 98801 CONTROL OF THE CODLING MOTH WITH GUTHION AND CM GRANULOSIS VIRUS, 1994: Guthion and two formulations of CM granulosis virus, a powder (CGI-9401) and liquid (CGI-9405), were evaluated for their ability to control CM over the entire season. Milk and 45 ml of NU-FILM-P were added to the 25-gal mixture of both virus formulations before application. Powdered milk was used first generation at 1 lb/25 gal, and liquid milk was used second generation at 1 gal/25 gal. The test was conducted in an apple orchard at the Tree Fruit Research and Extension Center. The trees were 15-yr-old spur type 'Delicious' on dwarfing roots. Treatments were applied to two-tree plots replicated five times using a RCB design. All treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gpa. The CM granulosis virus was applied at intervals of 100 degree days following the first application against each CM generation. The first application of all treatments against the first and second CM generation was based on an accumulation of 250 (11 May) and 1200 (15 Jul) degree days, respectively, after first moth capture in pheromone traps. The posttreatment evaluation was made on 30 Aug. One hundred apples from one tree per plot were examined, and the number of CM injured fruit was recorded. Guthion was the only product tested that provided significantly better control than the untreated check. CM pressure was extremely high in this block and could have contributed to the failure of the virus treatments. Furthermore, since only raw virus mixed with milk and NU-FILM-P was applied, a better formulation may add to the efficacy of these products. Weather was good at the time of applications. No. CM injured fruit Rate Treatment Application date per 100 (AI)/acre Guthion 50 WP 16 oz 11 May, 2 Jun, 15 Jul, 4 Aug 3.8a 2 X 10 OB 11, 20, 28 May, 4, 11, 21 Jun, CGI-9401 68.0b 15, 20, 25 Jul, 4, 8, 16 Aug CGI-9401 5 X 10 OB 11, 20, 28 May, 4, 11, 21 Jun, 67.2b 15, 20, 25 Jul, 4, 8, 16 Aug CGI-9405 2 X 10 OB 11, 20, 28 May, 4, 11, 21 Jun, 71.6b 15, 20, 25 Jul, 4, 8, 16 Aug CGI-9405 5 X 10' OB 11, 20, 28 May, 4, 11, 21 Jun, 68.6b 15, 20, 25 Jul, 4, 8, 16 Aug Untreated 61.0b Means in the same column followed by the same letter not significantly different, (P = 0.05, Fisher's Protected LSD).

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 1995

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