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Citrus Rust Mite Control with Alert (Ac 303, 630), 1996

Citrus Rust Mite Control with Alert (Ac 303, 630), 1996 Downloaded from https://academic.oup.com/amt/article-abstract/22/1/65/4639835 by DeepDyve user on 21 July 2020 D: CITRUS, NUTS , AN D AVOCADOS Arthropod Management Tests, Vol. 22 65 THIRD APPLICATION Mean % fruit infested with immature CT Rate 17 May 20 May 29 May 16 Aug Treatment" lb(AI)/acre 2 DAT 5 DAT 14 DA T Mature Fruit Carzol SP 1.38 0.00c 0.83d 1.65b 4.17c Carzol + Baythroid 0.92 + 0.05 0.00c 0.83d 5.00c 1.79b Baythroid 0.1 7.50bc 11.67c 16.67b 1.73b Agri-Mek 0.04 0.83c 5.00d 13.33bc 1.71b Agri-Mek 0.08 0.83c O.OOd 8.34bc 1.75b Dimethoate E267* 1.81b 1.34 10.83bc 30.83b 28.33a Diraethoate E267 1.61b 1.34 18.34b 24.17b 20.00ab Untreated Check 37.50a 2.51a 36.67a 30.83a Means in a column followed by the same letter are not significantly different (F protected LSD P < 0.05) after square-root transformation. Nontransformed data presented. "AH treatments were applied with Kinetic nonionic surfactant at 0.1 % vol/vol except Agri-Mek which included NR-415 petroleum oil at 1.0 gal/acre. Applications containing Carzol and Dimethoate E267 included Neutralizer buffer at 0.125% vol/vol. *Danitol was applied the first application, Agri-Mek the second and Dimethoate E267 the third. Danitol was applied the first application, Alert the second and Dimethoate E267 the third. ORANGE: Citrus sinensis (L.) Osbeck 'Valencia' C. C. Childers, T. Gainey, and D. K. Threlkeld (9D) Citrus rust mite (CRM); Phyllocoptruta oleivora (Ashmead) University of Florida. IFAS Citrus Research and Education Center 700 Experiment Station Road Lake Alfred, Florida 33850 Telephone (941) 956-1151 CITRUS RUST MITE CONTROL WITH ALERT (AC 303, 630), 1996: Alert at three rates per acre was compared with Alert at the same rates tank-mixed with FC 435-66 petroleum oil only or with petroleum oil and one of two copper formulations against CRM. Treatments were assigned to 3 X 3 ( = 9 tree) plots in a RC B design, replicated 5 times on 8-1 0 ft tall trees with 18 X 26 ft spacing. Treatments were applied on 24 Jul using an FM C 352- S PTO airblast sprayer with speed, nozzling and pressure adjusted to deliver the designated gpa. At each evaluation date, 20 fruit were randomly selected and examined on the center tree within each replicate using a 10 X handlens. All live CRM (except eggs) were counted in two, 1 -cm lens field on partially shaded sides of each fruit. The two counts per fruit were combined and recorded as one observation. Data were subjected to log (X + 1) transformation for statistical analysis and untransformed means are presented in the table for comparison. The addition of 5 gal petroleum oil to Alert at 0.15, 0.2, or 0.3 lb AI per acre clearly enhanced the residual activity of the miticide in controlling CRM. Alert at 0.3 lb AI alone or in combination with petroleum oil was as effective as Agri-Mek plus petroleum oil in controlling CRM through 83 DAT. When copper hydroxide or coppe r sulfate was tank-mixed with Alert and petroleum oil, there was a significant reduction in the residual activity of the miti­ cide between 42-50 DAT. Mean no. CRM/2 cm of fruit surface DAT Treatment/Formulation Rate/acre Pre-spray 2 34 42 50 55 64 72 83 Alert 2 SC 0.15 lb AI 4a 0.1b 0.3b 0.7b 2.8bc 2.1b 9.5b 4.8b 2.3bcd Alert 2 SC 0.15 lb AI + Petroleum oil FC435-66 5 gal 4a 0.1b 0.2b 0.1c 0.3ef 0.5cd 0.4ef 1.4de 0.7ef Alert 2 SC 0.2 lb AI 6a 0 b 0.6b 0c 3.8cdef 3.0b 1.7de 2.7cd 1.7cdef Alert 2 SC 0.2 lb AI + Petroleum oil FC435-66 5 gal 4a 0b 0.1b 0c 3.2cde 0.5cd 2.5cd 2.2cd 1.8bcde Alert 2 SC 0.3 lb AI 4a 0.1b 0b 0c O.lef O.ld 0.2ef l.Ode 0.9def Alert 2 SC 0.3 lb AI + Petroleum oil FC435-66 5 gal 4a 0.2b 0b 0c O.lf O.ld Of 0.2e 0.8fg Alert 2SC 0.2 lb AI + Petroleum oil FC435-66 5 gal + Copper hydroxide 50WP 0.1b 0.5b 0c 8.0bc 17.2b 4 lb metallic 4a 11.3b 6.7b 5.6bc Alert 2 SC 0.2 lb AI + Petroleum oil FC435-66 5 gal + Copper sulphate 4 lb metallic 4a 0.2b 0.2b 4.0b 1.3bcd l.Obc 2.52bc 5.2bc 3.1b Agri-Mek 0.15 EC 10 oz form + Petroleum oil FC435-66 5 gal 4a 0b 0b 0b 0.3def O.ld 0.3ef O.le 0.2g Untreated Check 13a 21.4a 10.3a 6.7a 4a 6a 7a 17.2a 8.4a Means in a column followed by the same letter were not significantly different (P = 0.05; WD). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Citrus Rust Mite Control with Alert (Ac 303, 630), 1996

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Oxford University Press
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© 1997 Entomological Society of America.
eISSN
2155-9856
DOI
10.1093/amt/22.1.65
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Abstract

Downloaded from https://academic.oup.com/amt/article-abstract/22/1/65/4639835 by DeepDyve user on 21 July 2020 D: CITRUS, NUTS , AN D AVOCADOS Arthropod Management Tests, Vol. 22 65 THIRD APPLICATION Mean % fruit infested with immature CT Rate 17 May 20 May 29 May 16 Aug Treatment" lb(AI)/acre 2 DAT 5 DAT 14 DA T Mature Fruit Carzol SP 1.38 0.00c 0.83d 1.65b 4.17c Carzol + Baythroid 0.92 + 0.05 0.00c 0.83d 5.00c 1.79b Baythroid 0.1 7.50bc 11.67c 16.67b 1.73b Agri-Mek 0.04 0.83c 5.00d 13.33bc 1.71b Agri-Mek 0.08 0.83c O.OOd 8.34bc 1.75b Dimethoate E267* 1.81b 1.34 10.83bc 30.83b 28.33a Diraethoate E267 1.61b 1.34 18.34b 24.17b 20.00ab Untreated Check 37.50a 2.51a 36.67a 30.83a Means in a column followed by the same letter are not significantly different (F protected LSD P < 0.05) after square-root transformation. Nontransformed data presented. "AH treatments were applied with Kinetic nonionic surfactant at 0.1 % vol/vol except Agri-Mek which included NR-415 petroleum oil at 1.0 gal/acre. Applications containing Carzol and Dimethoate E267 included Neutralizer buffer at 0.125% vol/vol. *Danitol was applied the first application, Agri-Mek the second and Dimethoate E267 the third. Danitol was applied the first application, Alert the second and Dimethoate E267 the third. ORANGE: Citrus sinensis (L.) Osbeck 'Valencia' C. C. Childers, T. Gainey, and D. K. Threlkeld (9D) Citrus rust mite (CRM); Phyllocoptruta oleivora (Ashmead) University of Florida. IFAS Citrus Research and Education Center 700 Experiment Station Road Lake Alfred, Florida 33850 Telephone (941) 956-1151 CITRUS RUST MITE CONTROL WITH ALERT (AC 303, 630), 1996: Alert at three rates per acre was compared with Alert at the same rates tank-mixed with FC 435-66 petroleum oil only or with petroleum oil and one of two copper formulations against CRM. Treatments were assigned to 3 X 3 ( = 9 tree) plots in a RC B design, replicated 5 times on 8-1 0 ft tall trees with 18 X 26 ft spacing. Treatments were applied on 24 Jul using an FM C 352- S PTO airblast sprayer with speed, nozzling and pressure adjusted to deliver the designated gpa. At each evaluation date, 20 fruit were randomly selected and examined on the center tree within each replicate using a 10 X handlens. All live CRM (except eggs) were counted in two, 1 -cm lens field on partially shaded sides of each fruit. The two counts per fruit were combined and recorded as one observation. Data were subjected to log (X + 1) transformation for statistical analysis and untransformed means are presented in the table for comparison. The addition of 5 gal petroleum oil to Alert at 0.15, 0.2, or 0.3 lb AI per acre clearly enhanced the residual activity of the miticide in controlling CRM. Alert at 0.3 lb AI alone or in combination with petroleum oil was as effective as Agri-Mek plus petroleum oil in controlling CRM through 83 DAT. When copper hydroxide or coppe r sulfate was tank-mixed with Alert and petroleum oil, there was a significant reduction in the residual activity of the miti­ cide between 42-50 DAT. Mean no. CRM/2 cm of fruit surface DAT Treatment/Formulation Rate/acre Pre-spray 2 34 42 50 55 64 72 83 Alert 2 SC 0.15 lb AI 4a 0.1b 0.3b 0.7b 2.8bc 2.1b 9.5b 4.8b 2.3bcd Alert 2 SC 0.15 lb AI + Petroleum oil FC435-66 5 gal 4a 0.1b 0.2b 0.1c 0.3ef 0.5cd 0.4ef 1.4de 0.7ef Alert 2 SC 0.2 lb AI 6a 0 b 0.6b 0c 3.8cdef 3.0b 1.7de 2.7cd 1.7cdef Alert 2 SC 0.2 lb AI + Petroleum oil FC435-66 5 gal 4a 0b 0.1b 0c 3.2cde 0.5cd 2.5cd 2.2cd 1.8bcde Alert 2 SC 0.3 lb AI 4a 0.1b 0b 0c O.lef O.ld 0.2ef l.Ode 0.9def Alert 2 SC 0.3 lb AI + Petroleum oil FC435-66 5 gal 4a 0.2b 0b 0c O.lf O.ld Of 0.2e 0.8fg Alert 2SC 0.2 lb AI + Petroleum oil FC435-66 5 gal + Copper hydroxide 50WP 0.1b 0.5b 0c 8.0bc 17.2b 4 lb metallic 4a 11.3b 6.7b 5.6bc Alert 2 SC 0.2 lb AI + Petroleum oil FC435-66 5 gal + Copper sulphate 4 lb metallic 4a 0.2b 0.2b 4.0b 1.3bcd l.Obc 2.52bc 5.2bc 3.1b Agri-Mek 0.15 EC 10 oz form + Petroleum oil FC435-66 5 gal 4a 0b 0b 0b 0.3def O.ld 0.3ef O.le 0.2g Untreated Check 13a 21.4a 10.3a 6.7a 4a 6a 7a 17.2a 8.4a Means in a column followed by the same letter were not significantly different (P = 0.05; WD).

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 1997

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