WNC Apple Flower Bud Mortality Assessments
go.ncsu.edu/readext?523433
en Español / em Português
El inglés es el idioma de control de esta página. En la medida en que haya algún conflicto entre la traducción al inglés y la traducción, el inglés prevalece.
Al hacer clic en el enlace de traducción se activa un servicio de traducción gratuito para convertir la página al español. Al igual que con cualquier traducción por Internet, la conversión no es sensible al contexto y puede que no traduzca el texto en su significado original. NC State Extension no garantiza la exactitud del texto traducido. Por favor, tenga en cuenta que algunas aplicaciones y/o servicios pueden no funcionar como se espera cuando se traducen.
Português
Inglês é o idioma de controle desta página. Na medida que haja algum conflito entre o texto original em Inglês e a tradução, o Inglês prevalece.
Ao clicar no link de tradução, um serviço gratuito de tradução será ativado para converter a página para o Português. Como em qualquer tradução pela internet, a conversão não é sensivel ao contexto e pode não ocorrer a tradução para o significado orginal. O serviço de Extensão da Carolina do Norte (NC State Extension) não garante a exatidão do texto traduzido. Por favor, observe que algumas funções ou serviços podem não funcionar como esperado após a tradução.
English
English is the controlling language of this page. To the extent there is any conflict between the English text and the translation, English controls.
Clicking on the translation link activates a free translation service to convert the page to Spanish. As with any Internet translation, the conversion is not context-sensitive and may not translate the text to its original meaning. NC State Extension does not guarantee the accuracy of the translated text. Please note that some applications and/or services may not function as expected when translated.
Collapse ▲Southeastern apple growers observed low temperatures near or below critical temperatures for apple three times in a two-week period. These potential frost/freeze events coincided with the bloom period for most varieties (see table below).
In cooperation with MaryMorgan Arrington (Wilkes County Horticulture Agent) and Terry Kelley (Henderson County Extension Director and Tree Fruit Agent), we evaluated apple bud survival across four sites in Western North Carolina.Sites were in close proximity to NEWA weather stations. This evaluation was conducted following the potential freeze event on April 8th, 2018.
The presence and severity of frost/freeze damage was evaluated using a method for assessing fruit bud survival. At each site, ~10 representative limbs from four varieties (Pink Lady, Gala, Golden Delicious, and Rome) were collected and viability of all blossoms was assessed. Click on each table to enlarge.
Extent of bud mortality ranged widely across varieties and sites. Additionally, potentially injurious air temperatures were observed at some sites after this assessment was conducted. Several factors determine the potential severity of blossom mortality, including: site, location, bud development stage at time of freeze event, lowest temperature observed, the duration of low temperature exposure, cultivar, cropping history, and tree health.
This assessment would not be possible without the hard work of several individuals, including: MaryMorgan Arrington, Tracy Cavagnaro, Chris Clavet, Bill Gardo, Terry Kelly, Kevin Landis, Gary Madere, and Ken Olson. Appreciation is extended to MaryMorgan and Terry, who collected samples from the sites presented. Thank you for your great help!