Tag: Germán V. Sandoya

Downy Mildew of Lettuce in Florida

Rows of research lettuce at the EREC in Belle Glade. Photo taken 10-22-15 by Tyler Jones.

Lettuce Downy Mildew (LDM), caused by the oomycete Bremia lactucae, is the most important disease of lettuce worldwide. LDM has a direct effect on both yield quantity and quality because it may infect lettuce at any growth stage, affecting the marketable portion of the crop. This new 6-page publication of the UF/IFAS Horticultural Sciences Department introduces the LDM disease in Florida lettuce and available control methods and strategies. This publication also introduces the work on LDM in the UF/IFAS Lettuce Breeding Program, which was created to release cultivars adapted to Florida conditions. Written by Lis Rodrigues-Porto, Richard N. Raid, and Germán V. Sandoya.
https://edis.ifas.ufl.edu/hs1403

Fusarium Wilt: A New Threat to Florida Lettuce Production

Pink-brown taproot discoloration caused by Fusarium oxysporum f.sp. lactucae (A). Iceberg field in the Everglades Agricultural Area (EAA) colonized by a wilting disease in the 2017– 2018 season identified as Fusarium wilt of lettuce (B). Credits: Germán Sandoya, UF/IFAS

Fusarium wilt of lettuce is a disease caused by the fungus Fusarium oxysporum f.sp. lactucae. The disease is present in all lettuce production areas worldwide. Recently this disease has been identified in Florida in localized fields. This new 4-page publication of the UF/IFAS Horticultural Sciences Department presents information about the disease, symptoms, and control measures useful to lettuce growers in Florida. Following these recommendations may help to avoid the spread of this fungus in muck soils at the Everglades Agricultural Area (EAA), where 90% of the lettuce in Florida is planted. Written by Germán V. Sandoya, Jesse J. Murray, Richard N. Raid, and Christian F. Miller.
https://edis.ifas.ufl.edu/hs1385