- European Export Sales Manager (Asia Market)
- Autonomous Greenhouse Manager
- Sales & Product representative Pot & Garden USA
- Supervisor International Horticultural Projects (USA)
- Director Of Growing - Carleton (MI) USA
- Greenhouse Manager - Cleburne (TX) USA
- Sales Manager
- Growing Manager young vegetable plants
- Sales Agents / Representatives - Germany
- Lead Grower California USA
Top 5 -last week
Top 5 -last month
New fireblight early warning service from Agrovista
The new early warning system, a first in the UK market, is undergoing final trials and will be released in May. It will be available free of charge to GCI subscribers, says Agrovista fruit agronomist Alex Radu.
“Fireblight is a potentially serious disease on apples and pears caused by the bacterium Erwinia amylovora. There is no chemical cure available, so growers have to rely on copper-based preventative or antagonistic sprays before the disease takes hold,” he explains. “This makes accurate forecasting all the more vital.”
Fireblight infection occurs through blossom and new growth when weather is favourable and inoculum is present. The new fireblight software, developed by Dutch pest and disease software forecasting specialist RIMpro, calculates the likelihood of infection based on flowering period obtained from weather information and observation and likely contamination and bacterial growth based on temperature and relative humidity/rainfall.
The quality of the forecast is completely dependant on the accuracy of these weather predictions, says Mr Radu. This information is supplied from live weather data collected by GCI from a network of over 35 weather stations across the country, from which highly accurate local forecasts can be modelled.
“Erwinia becomes a threat at 18C or more, when conditions are wet,” Mr Radu explains. “Growers whose orchards have a history of disease can assume it is there, and we can now help them forecast potential outbreaks with greater accuracy.
“This means we can improve the timing and efficacy of preventative applications, which will be a real benefit to growers in managing disease.
“It will also reduce the number of applications required and ensure they are targeted more effectively, saving growers money and helping to reduce the presence of residues in the environment and the crop.”
The new software cements Agrovista’s lead in online technologies, and confirms GCI as the most up-to-date on-line disease and pest forecasting service for top fruit growers.
The GCI package now includes RIMpro’s primary and secondary scab, codling moth, canker, and fireblight forecasts as well as the weather data recorded at that station. All stations display a 10-day forecast for all the models.
Subscribers can access live graphics, and text alerts are available for major events. Daily emails are also available for the local weather forecast, likely spraying conditions and spray application windows.
What the grower sees
Click here to enlarge
The bar at the bottom shows leaf wetness readings in light blue and active rain as dark blue, as registered by the on-farm weather station.
The lower graph shows the growth of the Erwinia population on the stigma after contamination. Each black line stands for a new group of flowers.
The middle graph shows the potential infection incidence as calculated from flower age and level of the infecting bacterial population.
The upper graph shows the growth within the plant of the Erwinia population after infection.
In this case, taken from an orchard in mid-Europe when the model was being developed, the weather during flowering was very favourable for the development of high Erwinia population levels on the stigma. Six wetness events caused potential infection events.
Since the earliest infections rarely result in symptoms, sprays can be adjusted depending on individual risk management preferences. Nonetheless, at least two sprays were needed to adequately manage fire blight - the first spray in relation to the 20 April infection, and a second spray for flower groups that opened later and which led to infection on 25-28 April.
For more information:
Agrovista UK Limited
Tel: +44 1328 700014
Receive the daily newsletter in your email for free | Click here
Other news in this sector:
- 2020-10-23 'Rockit Global celebrates successful season'
- 2020-10-23 The grape season is back to normal, but the world is not
- 2020-10-23 Marketing activities for Juici™ apples to focus on social media this fall
- 2020-10-23 Watermelon Board announces winners of retail merchandising contest
- 2020-10-23 Draft review of apple biosecurity import requirements from the USA to Australia identifies 24 possible pest risks
- 2020-10-23 The least consumed fruits in Colombia register the highest growth in exports
- 2020-10-23 High expectations for the Chilean blueberry this season
- 2020-10-23 "Grandezza branded Peruvian blueberries off to a good start"
- 2020-10-23 “Consumers have been demanding higher-quality and premium berries”
- 2020-10-22 UK: FW Mansfield & Son in Canterbury to create 80 new jobs
- 2020-10-22 Namibia is exporting tons of blueberries for the first time ever
- 2020-10-22 Tongan growers hit by ban on Tongan watermelon exports to New Zealand
- 2020-10-22 22% increase in volume for The Pink Lady® range
- 2020-10-22 US grape storage numbers still far below 2018 numbers
- 2020-10-22 New season of Egyptian strawberries is coming soon
- 2020-10-22 Forthcoming season promises to be the cherry on the top
- 2020-10-22 Peak of the Peruvian blueberry season now underway
- 2020-10-21 Radio personality Ellen K. voices promotional spots for Envy™ apples
- 2020-10-21 Tomato grower expands product line to bring blueberries to market in December
- 2020-10-21 Mexico is ready to retaliate if the US imposes tariffs on its blueberries