Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple
- Autores
- Curetti, Mariela; Raffo Benegas, Maria Dolores
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Trabajo presentado al XII International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems. Wenatchee, Washington (Estados Unidos), julio de 2021
Carbaryl is Argentina’s most used thinning compound for ‘Red Delicious’ apple. Due to environmental concerns about its application, there is a need to find alternatives for chemical thinning. The objective of this work was to evaluate the thinning efficacy of diverse strategies of Brevis® (15% metamitron) applications in the apple ‘Red Delicious’. Experiments were conducted in a commercial apple orchard of ‘Red Delicious’ located in Rio Negro (Argentina) during four seasons (2014-2018). One or two applications with metamitron (MM) were made when central fruit in the clusters were 8-10 mm and 12-14 mm in diameter. First, MM was evaluated at three concentrations (165, 248, and 330 mg L‑1). Secondly, single applications (165 and 248 mg L‑1) and double applications (82.5 and 124 mg L‑1) were tested. All treatments were compared with untreated control and carbaryl application at 1200 mg L‑1. Spraying volume was 2000 L ha‑1 in all treatments. Fruit set, yield, fruit size, maturity indexes, phytotoxicity symptoms, and return bloom were assessed. Under trial conditions, all MM treatments significantly reduced crop load, fruit set, and the number of fruits per tree. In some seasons, the highest MM concentrations (248 and 330 mg L‑1) generated an excessive thinning effect. On the other hand, carbaryl treatment was sometimes ineffective. Double applications increased the thinning efficiency but did not always promote fruit size at harvest. MM treatments only generated slight chlorosis of the leaves and did not negatively affect fruit size and bloom return. Thinning treatments did not affect maturity indices. Therefore, a single treatment with MM at 165 mg L‑1 (±Brevis® 2.2 kg ha‑1) with 8-10 mm fruit diameter is recommended for chemical thinning of ‘ Red Delicious’ and can be as effective as carbaryl application.
EEA Alto Valle
Fil: Curetti, Mariela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina
Fil: Raffo Benegas, María Dolores. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina - Fuente
- Acta Horticulturae 1346 : 489-495 (September 2022)
- Materia
-
Apples
Pest Control
Metamitron
Chemical Fruit Thinning
Manzana
Malus
Control de Plagas
Metamitrona
Aclareo Químico del Fruto
Malus doméstica
Raleo Químico
Retorno de la Floración
Chemical Thinning
Bloom Return - Nivel de accesibilidad
- acceso restringido
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/23881
Ver los metadatos del registro completo
id |
INTADig_7aed58ad3a682cc47a7b9f28780f53ec |
---|---|
oai_identifier_str |
oai:localhost:20.500.12123/23881 |
network_acronym_str |
INTADig |
repository_id_str |
l |
network_name_str |
INTA Digital (INTA) |
spelling |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' appleCuretti, MarielaRaffo Benegas, Maria DoloresApplesPest ControlMetamitronChemical Fruit ThinningManzanaMalusControl de PlagasMetamitronaAclareo Químico del FrutoMalus domésticaRaleo QuímicoRetorno de la FloraciónChemical ThinningBloom ReturnTrabajo presentado al XII International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems. Wenatchee, Washington (Estados Unidos), julio de 2021Carbaryl is Argentina’s most used thinning compound for ‘Red Delicious’ apple. Due to environmental concerns about its application, there is a need to find alternatives for chemical thinning. The objective of this work was to evaluate the thinning efficacy of diverse strategies of Brevis® (15% metamitron) applications in the apple ‘Red Delicious’. Experiments were conducted in a commercial apple orchard of ‘Red Delicious’ located in Rio Negro (Argentina) during four seasons (2014-2018). One or two applications with metamitron (MM) were made when central fruit in the clusters were 8-10 mm and 12-14 mm in diameter. First, MM was evaluated at three concentrations (165, 248, and 330 mg L‑1). Secondly, single applications (165 and 248 mg L‑1) and double applications (82.5 and 124 mg L‑1) were tested. All treatments were compared with untreated control and carbaryl application at 1200 mg L‑1. Spraying volume was 2000 L ha‑1 in all treatments. Fruit set, yield, fruit size, maturity indexes, phytotoxicity symptoms, and return bloom were assessed. Under trial conditions, all MM treatments significantly reduced crop load, fruit set, and the number of fruits per tree. In some seasons, the highest MM concentrations (248 and 330 mg L‑1) generated an excessive thinning effect. On the other hand, carbaryl treatment was sometimes ineffective. Double applications increased the thinning efficiency but did not always promote fruit size at harvest. MM treatments only generated slight chlorosis of the leaves and did not negatively affect fruit size and bloom return. Thinning treatments did not affect maturity indices. Therefore, a single treatment with MM at 165 mg L‑1 (±Brevis® 2.2 kg ha‑1) with 8-10 mm fruit diameter is recommended for chemical thinning of ‘ Red Delicious’ and can be as effective as carbaryl application.EEA Alto ValleFil: Curetti, Mariela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaFil: Raffo Benegas, María Dolores. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaISHS2025-09-22T12:21:40Z2025-09-22T12:21:40Z2022-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/23881https://www.actahort.org/books/1346/1346_62.htm978-94-62613-45-40567-7572 (Print)2406-6168 (Electronic)https://doi.org/10.17660/ActaHortic.2022.1346.62Acta Horticulturae 1346 : 489-495 (September 2022)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:47:31Zoai:localhost:20.500.12123/23881instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:47:32.253INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse |
dc.title.none.fl_str_mv |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple |
title |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple |
spellingShingle |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple Curetti, Mariela Apples Pest Control Metamitron Chemical Fruit Thinning Manzana Malus Control de Plagas Metamitrona Aclareo Químico del Fruto Malus doméstica Raleo Químico Retorno de la Floración Chemical Thinning Bloom Return |
title_short |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple |
title_full |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple |
title_fullStr |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple |
title_full_unstemmed |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple |
title_sort |
Metamitron application could replace carbaryl treatment for chemical thinning in 'Red Delicious' apple |
dc.creator.none.fl_str_mv |
Curetti, Mariela Raffo Benegas, Maria Dolores |
author |
Curetti, Mariela |
author_facet |
Curetti, Mariela Raffo Benegas, Maria Dolores |
author_role |
author |
author2 |
Raffo Benegas, Maria Dolores |
author2_role |
author |
dc.subject.none.fl_str_mv |
Apples Pest Control Metamitron Chemical Fruit Thinning Manzana Malus Control de Plagas Metamitrona Aclareo Químico del Fruto Malus doméstica Raleo Químico Retorno de la Floración Chemical Thinning Bloom Return |
topic |
Apples Pest Control Metamitron Chemical Fruit Thinning Manzana Malus Control de Plagas Metamitrona Aclareo Químico del Fruto Malus doméstica Raleo Químico Retorno de la Floración Chemical Thinning Bloom Return |
dc.description.none.fl_txt_mv |
Trabajo presentado al XII International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems. Wenatchee, Washington (Estados Unidos), julio de 2021 Carbaryl is Argentina’s most used thinning compound for ‘Red Delicious’ apple. Due to environmental concerns about its application, there is a need to find alternatives for chemical thinning. The objective of this work was to evaluate the thinning efficacy of diverse strategies of Brevis® (15% metamitron) applications in the apple ‘Red Delicious’. Experiments were conducted in a commercial apple orchard of ‘Red Delicious’ located in Rio Negro (Argentina) during four seasons (2014-2018). One or two applications with metamitron (MM) were made when central fruit in the clusters were 8-10 mm and 12-14 mm in diameter. First, MM was evaluated at three concentrations (165, 248, and 330 mg L‑1). Secondly, single applications (165 and 248 mg L‑1) and double applications (82.5 and 124 mg L‑1) were tested. All treatments were compared with untreated control and carbaryl application at 1200 mg L‑1. Spraying volume was 2000 L ha‑1 in all treatments. Fruit set, yield, fruit size, maturity indexes, phytotoxicity symptoms, and return bloom were assessed. Under trial conditions, all MM treatments significantly reduced crop load, fruit set, and the number of fruits per tree. In some seasons, the highest MM concentrations (248 and 330 mg L‑1) generated an excessive thinning effect. On the other hand, carbaryl treatment was sometimes ineffective. Double applications increased the thinning efficiency but did not always promote fruit size at harvest. MM treatments only generated slight chlorosis of the leaves and did not negatively affect fruit size and bloom return. Thinning treatments did not affect maturity indices. Therefore, a single treatment with MM at 165 mg L‑1 (±Brevis® 2.2 kg ha‑1) with 8-10 mm fruit diameter is recommended for chemical thinning of ‘ Red Delicious’ and can be as effective as carbaryl application. EEA Alto Valle Fil: Curetti, Mariela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina Fil: Raffo Benegas, María Dolores. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina |
description |
Trabajo presentado al XII International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems. Wenatchee, Washington (Estados Unidos), julio de 2021 |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09 2025-09-22T12:21:40Z 2025-09-22T12:21:40Z |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/20.500.12123/23881 https://www.actahort.org/books/1346/1346_62.htm 978-94-62613-45-4 0567-7572 (Print) 2406-6168 (Electronic) https://doi.org/10.17660/ActaHortic.2022.1346.62 |
url |
http://hdl.handle.net/20.500.12123/23881 https://www.actahort.org/books/1346/1346_62.htm https://doi.org/10.17660/ActaHortic.2022.1346.62 |
identifier_str_mv |
978-94-62613-45-4 0567-7572 (Print) 2406-6168 (Electronic) |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
restrictedAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
ISHS |
publisher.none.fl_str_mv |
ISHS |
dc.source.none.fl_str_mv |
Acta Horticulturae 1346 : 489-495 (September 2022) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
reponame_str |
INTA Digital (INTA) |
collection |
INTA Digital (INTA) |
instname_str |
Instituto Nacional de Tecnología Agropecuaria |
repository.name.fl_str_mv |
INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria |
repository.mail.fl_str_mv |
tripaldi.nicolas@inta.gob.ar |
_version_ |
1844619209437347840 |
score |
13.069144 |