Germán V. Sandoya

0000-0002-4532-1364

Downy Mildew of Lettuce in Florida

Lis Rodrigues-Porto, Richard N. Raid, and Germán V. Sandoya

Fertilization of Sweet Corn, Celery, Romaine, Escarole, Endive, and Radish on Organic Soils in Florida

George J. Hochmuth, Edward Hanlon, George Snyder, Russell Nagata, Tom Schueneman, German V. Sandoya Miranda, Jehangir Bhadha, and Niguss S. Hailegnaw

Celery, sweet corn, endive, escarole, romaine lettuce, and radish are important crops on organic soils in Florida. This bulletin summarizes fertilization research results with these crops from the 1940s to the present. New interpretations of these compiled works were used to produce updated UF/IFAS Extension recommendations for fertilization of these six vegetable crops.

Bacterial Leaf Spot of Lettuce: An Unpredictable Enemy to the Florida Lettuce Industry

Germán Sandoya and D. Calvin Odero

Bacterial leaf spot (BLS) of lettuce is caused by the bacterium Xanthomonas hortorum. BLS is more damaging in Florida, where the climate is conducive for disease development. The most effective control method is host resistance currently being developed by the UF/IFAS lettuce breeding program in all lettuce types. This new 4-page publication of the UF/IFAS Horticultural Sciences Department was written by Germán Sandoya and D. Calvin Odero.

Strategies for Improving Phosphorus Use Efficiency in Lettuce Grown on Histosols

Gustavo F. Kreutz, Jehangir H. Bhadha, Guodong D. Liu, Marcio F. R. Resende, Alan L. Wright, D. Calvin Odero, and Germán V. Sandoya

The global demand for P fertilizers has been significantly increasing, resulting in higher costs and environmental concerns associated with eutrophication. Fertilizer expenses and environmental risks can be reduced through the implementation of sustainable strategies. This new 6-page publication of the UF/IFAS Horticultural Sciences Department compiles several strategies to improve the utilization of P fertilization in lettuce grown in the Everglades Agricultural Area.

Chapter 9. Leafy Vegetable Production

Germán Sandoya-Miranda, Ramdas Kanissery, Nicholas S. Dufault, Johan Desaeger, Anna Meszaros, Julien Beuzelin, Katia Viana Xavier, and Dennis C. Odero

Chapter 9 of the Vegetable Production Handbook of Florida

¿Perdidos en la maleza? Una guía exhaustiva de malas hierbas no autóctonas en Florida

Deah Lieurance, Lyn A. Gettys y Germán Sandoya-Miranda

A UF/IFAS numbered Translation. Published by Integrated Pest Management

The Updated Seed Testing Rule for Lettuce mosaic virus in Florida

De-Fen Mou, Germán V. Sandoya, Anna Mészáros, Ozgur Batuman, and Trevor Smith

This publication aims to raise awareness of the updated Florida seed certification requirement for lettuce mosaic virus (LMV). Florida mandates that all lettuce seeds sold and used in the state must be tested and certified as LMV-free (i.e., zero infected seed per 30,000 tested for LMV). The information presented in this publication is directed to state and county Extension faculty, crop consultants, current and potential lettuce producers, seed companies, and home gardeners who grow lettuce in Florida.

La Producción de Lechuga en Sistemas Hidropónicos a Pequeña Escala

Germán V. Sandoya, Jonael Bosques, y E. Vanessa Vassilaros

This publication presents an overview on the use of different small hydroponic systems that could be implemented by home gardeners. Recommendations on lighting, media, and other key aspects are presented in this publication as well. Spanish translation of HS1422, Growing Lettuce in Small Hydroponic Systems, by Germán V. Sandoya, Jonael Bosques, and E. Vanessa Vassilaros. Published by the UF/IFAS Horticultural Sciences Department; 8 pp.

La Mancha Foliar Bacteriana: Un Enemigo Impredecible para la Industria de la Lechuga de Florida

Byron Manzanero, Germán Sandoya, y D. C. Odero

Este artículo describe las prácticas de manejo de cultivo requeridas para la producción de lechuga de campo en Florida y para ayudar a los productores a tomar decisiones de manejo que ayudarán a controlar la mancha bacteriana de la lechuga. A translation of HS1412, by Byron Manzanero, Germán Sandoya, and D. C. Odero; published by the UF/IFAS Horticultural Sciences Department; 4 pp.

Evaluation of Lettuce Cultivars for Production on Muck Soils in Southern Florida

German Sandoya and Huangjun Lu

A UF/IFAS numbered Fact Sheet for Commercial audience(s). Published by Plant Systems

Nutritional Benefits of Lettuce Consumed at Recommended Portion Sizes

Jesse J. Murray, Gilles Basset, and German Sandoya

This new 8-page publication of the UF/IFAS Horticultural Sciences Department explains which nutrients are abundant among the major lettuce types compared to other leafy vegetables, encourages consumers to help satisfy dietary recommendations by eating lettuce at appropriate serving sizes, and outlines the basic growing conditions that help maximize its nutrition as a crop. Written by Jesse J. Murray, Gilles Basset, and German Sandoya.

Escarole and Endive: Nutritious Leafy Vegetables with High Potential for Floridians

Germán Sandoya, Makou Lin, Jeongim Kim, and Steven Sargent

Escaroles and endives are two leafy vegetables of the Compositae family rich in nutrients and minerals. Both crops are uncommon in the United States, but both are planted in wintertime in Florida and in other states such as California and New Jersey. This publication aims the public and inform of their use in the leafy vegetable industry in Florida. As other leafy vegetables, escaroles and endives are susceptible to pests and diseases and other physiological disorders such as pink rib at postharvest. Using the correct management practices and the correct cultivars adapted for Florida could help producers in fields and in the home garden to achieve a successful crop.

Fertilization Recommendations for Crisphead Lettuce Grown on Organic Soils in Florida

George Hochmuth, Ed Hanlon, Russell Nagata, George Snyder, Tom Schueneman, J. Mabry McCray, and German Sandoya

This publication presents UF/IFAS recommendations for fertilization of crisphead lettuce on organic soils in Florida. Written by George Hochmuth, Ed Hanlon, Russell Nagata, George Snyder, Tom Schueneman, J. Mabry McCray, and German Sandoya, and published by the UF/IFAS Horticultural Sciences Department, revised January 2023.

Growing Lettuce in Small Hydroponic Systems

Germán V. Sandoya, Jonael Bosques, Francisco Rivera, and E. Vanessa Campoverde

This new 6-page publication of the UF/IFAS Horticultural Sciences Department presents an overview on the use of different small hydroponic systems that could be implemented by home gardeners for lettuce. Recommendations on lighting, media, and other key aspects are presented in this publication as well. Written by Germán V. Sandoya, Jonael Bosques, Francisco Rivera, and E. Vanessa Campoverde.

Lettuce Cultivars for Insect Resistance in Southern Florida

German Sandoya, Huangjun Lu, and Alan L. Wright

Lettuce is the most popular ingredient in salads and salad mixes consumed in the United States. Florida's subtropical climate facilitates lettuce production from fall through spring, but the warm and moist conditions are also favorable for insect proliferation and damage. Insect pests cause direct (feeding) and indirect (contamination) damages to the lettuce crop. This manuscript presents data on cultivars and breeding lines with tolerance to some of these pests. Minor Revision; 5 pp.

Fusarium Wilt: A New Threat to Florida Lettuce Production

Germán V. Sandoya, Jesse J. Murray, Richard N. Raid, and Christian F. Miller

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.