- Sales Representative Substrates Peru
- Head Grower – High Technology Organic Greenhouse
- Import and Export Sales Manager
- Sales Manager - US
- Key Account Manager (f/m/d) - Full-time
- Vice President of Growing Operations
- Account Manager - Canada
- Account Manager - United States
- Procurement Manager Blueberries
- International Fruit Trader
US: Greenhouse heat as recipe for HLB-affected citrus
But USDA Agricultural Research Service (ARS) scientists in Fort Pierce, Fla., have found that heating potted citrus seedlings in growth chambers can rid seedlings of HLB symptoms. What's more, encasing infected trees in plastic tents to heat them in the sun also can prolong their productivity, according to Yongping Duan, an ARS plant pathologist at Fort Pierce.
ARS is USDA's principal intramural scientific research agency, and this work supports the USDA goal of promoting international food security.
Duan and his colleagues at the ARS US Horticultural Research Laboratory exposed HLB-infected citrus seedlings to different levels of heat in growth chambers for periods ranging from two to 10 days to evaluate its effects. The seedlings were about 2.5 years old, about two feet tall, and were grown in one-gallon containers. They were heated to constant temperatures of 104 degrees, 107 degrees, or 113 degrees Fahrenheit. Fluorescent lamps provided light for 12-hour "day-time" cycles, and were turned off for the same lengths each "night." Infection levels were measured a week before heat treatments began, and again 30 days, 60 days, and 270 days after the treatments ended.
The results, published in the journal Phytopathology, showed that exposing citrus seedlings to a minimum of 48 hours of temperatures of 104 to 107 degrees Fahrenheit significantly reduced and often eliminated HLB infection. Monitoring showed the effects can last for at least two years.
Receive the daily newsletter in your email for free | Click here
Other news in this sector:
- 2023-12-05 First report of Thrips parvispinus in Canada, and spread in the USA
- 2023-12-01 Bumblebees are still being harmed by pesticides, study
- 2023-12-01 "A entire season of not spraying against mildew? It's possible!"
- 2023-11-29 Effective vaccine against cow parasite thanks to modification of sugar structures in plant
- 2023-11-28 AU: Forces combine to shield vegetable industry from exotic pest threats
- 2023-11-27 Argentina: ToBRFV detected in Buenos Aires
- 2023-11-22 Invasion of the tomato moth spells trouble for Kazakhstan's growers
- 2023-11-21 New database Dutch Names of Plant Diseases
- 2023-11-17 Certis Belchim partners with Novozymes on new Biorational fungicid
- 2023-11-16 Navigating the energy efficiency, greenhouse lighting, and pollination success
- 2023-11-13 The importance of hand hygiene in battling rugose
- 2023-11-10 Russia: Inspectors stops ToBRFV-infected tomatoes coming from China
- 2023-11-10 Osmo receives $8.5 million to advance AI-enabled insect control
- 2023-11-09 Bayer considers spinning off crop protection
- 2023-11-09 A new barrier against downy mildew in basil
- 2023-11-09 New ToLCNDV information center