Disease & Pest Alerts!
Disease & Pest Update
RECENT REPORTS of New Disease and Pest Problems-1 DISEASE / PEST ALERTS [Updated 04/11/2012] Send Additional Published Reports to H. F. Schwartz @ howard.schwartz@colostate.edu 2012 IYSV (Iris yellow spot virus) in India [Mandal et al., Plant Dis. 96:468-479] IYSV & Thrips (Frankliniella fusca) transmission [Srinivasan et al., J. Econ. Ent. 105:40-47] Leaf and [...]
State Commentary
Howard Schwartz – Colorado
COLORADO Commentary Onion Crop Growth Stage and Status Last Modified: 05/16/12 Onion plantings complete in eastern, southern and western Colorado; approximately 7,000 acres were planted statewide in 2012. Warm, dry conditions persist throughout Colorado, with required irrigation with well water (salinity potential) until canal system is charged. Weather Impacts (temperature, rain, hail, freezing) Last Modified: [...]
Lindsey du Toit – Washington
September 27, 2011 – Most onion crops in the Columbia Basin of WA and OR have been harvested or windrowed. August and September were warm and dry overall. Bulb rots (neck rot, black mold, and bacterial) have been observed in quite a few fields, suggesting this may be a problematic storage season.
Brian Nault – New York
September 19, 2011. Most of the crop in NY has been pulled and harvested. Bulb yields are below average. Many fields in the Black Dirt region in the Hudson Valley, where 40% of the onions in NY are grown, were flooded after Hurricane Irene. For those fields in NY that have been harvested, onion quality [...]
Howard Schwartz – Colorado
September 15, 2011 Lower temperatures and rain occurred in most onion regions, and may contribute to late-season problems with bacterial and fungal diseases in the field and storage. aggravate some late-season fungal problems in seeded fields.
Lindsey du Toit – Washington
September 9, 2011 – Onion crops in the Columbia Basin of WA and OR are in the process of being harvested, or lifted/topped for harvest (several weeks behind schedule overall. remain behind in maturity). August was warm and drier, finally. Thrips populations on the decline. Reports of bulb rots (neck rot, black mold, and baceterial) [...]
Mary Hausbeck – Michigan
September 8, 2011 – Many growers have harvested their fields for the season. The neck rot previously reported is still being observed in central Michigan fields.
Krishna Mohan – Idaho
Sept 08, 2011 Harvesting of Onions in another 8 to 15 days.Crop growth is good with hot and dry conditions.Apart from confirmed IYSV, no other disease to report. Minor incidence of Cladosoprium from the dead and dying leaf tips. Thrips encountered in all the plots and their numbers are subsiding with the approaching harvest.
Onion ipmPIPE Project
August 8, 2011 By hschwartz Leave a Comment
The ONION ipmPIPE was developed in response to stakeholder demands for a coordinated and comprehensive website where onion farmers and agricultural professionals could obtain: 1) real-time information on the distribution and severity of priority diseases and insect pests in North America; 2) time-sensitive disease risk assessments; 3) information on disease and insect pest management options [...]