La Grama St. Augustine para Patios de Florida

La grama o césped St. Augustine está muy adaptada a las zonas calurosas y húmedas (subtropicales) del mundo. Se cree que es nativa de las regiones costeras del Golfo de México y del Mediterráneo. St. Augustine es la especie de grama más usada en Florida. This is the Spanish-language version of ENH5/LH010, St. Augustinegrass for Florida Lawns. St. Augustinegrass is the most commonly-used lawn grass in Florida. This 10-page document describes its cultivation and management for Florida lawns. Written by L. E. Trenholm, J. B. Unruh, T. W. Shaddox, C. Balerdi, and H. Mayer and published by the UF/IFAS Department of Environmental Horticulture, January 2018.

Screening Methods for Southern Chinch Bug Resistance in St. Augustinegrass

Figure 1. Bag test.Relying on insecticides for southern chinch bug control raises turfgrass maintenance costs, increases the risk that insects will develop resistance to insecticides, and may damage the environment. Host-plant resistance is a relatively sustainable and environmentally sound option for management of this damaging insect pest.To develop new resistant varieties, plant materials must be screened for new sources of southern chinch bug resistance. Screening methods to measure host plant resistance of St. Augustinegrass to southern chinch bugs have measured nymphal and/or adult survival in so-called no-choice tests in which only the experimental plant materials were provided. There are four types of screening methods described in this 4-page fact sheet was written by Huangjun Lu and Ronald Cherry, and published by the UF Department of Entomology and Nematology, October 2014. (Photo credit: Long Ma, UF/IFAS Extension)

Mosaic Disease of St. Augustinegrass caused by Sugarcane Mosaic Virus

Figure 1.  Mosaic symptoms on leaf blades of St. Augustinegrass infected with Sugarcane Mosaic Virus Mosaic disease of St. Augustinegrass was first reported in the 1960s in sugarcane producing areas of Palm Beach County, Florida. In the 10 years prior to 2013, less than 5 samples with mild symptoms were brought to the attention of the extension turfgrass pathologist. But in September 2013, an outbreak of the disease occurred in Pinellas County. Leaf symptoms included mosaic, but turned necrotic and the severe dieback that completely killed some infected lawns. In September 2014, lawns infected in 2013 and new lawns started dying in both Pinellas and Palm Beach Counties. Despite the similarity of symptoms to another St. Augustinegrass decline (SAD), as of November 2014, all samples have tested negative for SAD, and positive for presence of Sugarcane Mosaic Virus. This 3-page fact sheet was written by Phil Harmon, and published by the UF Department of Plant Pathology, November 2014.

Silicon Effects on Resistance of St. Augustinegrass to Southern Chinch Bugs and Plant Disease

Full winged adult on grass St. Augustine grass blade. Silicon (Si) is the second most common element on earth, but it is not considered an essential element for plant growth. However, a growing body of evidence has shown that Si can enhance plant resistance to insect pests. This 5-page fact sheet reports the results of a study to determine if silicon applications to St. Augustinegrass varieties increase the silicon in the plants and how this increased silicon affects development and survival of southern chinch bugs as well as development of plant diseases. Written by Alan L. Wright, Ron Cherry, Huangjun Lu, and Pamela Roberts, and published by the UF Department of Soil and Water Science, September 2013.

St. Augustinegrass for Florida Lawns (ENH5/LH010)

St. Augustinegrass is widely adapted to the warm, humid (subtropical) regions of the world. It is the most commonly used lawn grass throughout the state of Florida and can grow satisfactorily in a wide variety of soils. This revised 11-page fact sheet discusses the advantages and disadvantages of this turfgrass variety, cultivars available for lawn use in Florida, establishment, maintenance, pest management, and other problems. Written by L. E. Trenholm, J. L. Cisar, and J. B. Unruh, and published by the UF Department of Environmental Horticulture, April 2011.

ENH1137/EP398 ‘Captiva’ St. Augustinegrass

ENH1137, a 2-page illustrated fact sheet by L. E. Trenholm and Kevin Kenworthy, introduces this new dwarf cultivar characterized by dark green, short, narrow leaf blades and with improved tolerance to southern chinch bugs and plant hoppers, now available for use in landscapes. Published by the UF Department of Environmental Horticulture, December 2009.