Plant Pathology
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El tizón de fuego de las rosáceas es una enfermedad destructiva, altamente infecciosa y que ocurre en muchas partes del país y es causada por la bacteria Erwinia amylovora. El tizón de fuego es particularmente prevalente en algunos condados de Georgia. La enfermedad puede atacar los botones florales, las hojas, los meristemos apicales, ramas, frutos y las raíces.
[Fireblight is a destructive, highly infectious and widespread disease. It attacks blossoms, leaves, shoots, branches, fruits, and roots. This publication has some facts and methods to avoid and control the disease.]
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This publication contains information on the most important and common diseases of oats, the biology of the causal agents, as well as a detailed description of the disease symptoms, relevant up-to-date information on conditions favoring the diseases, as well as cultural, genetic, and chemical methods of control. The publication is intended for producers, crop consultants, county faculty, students, and the general public.
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Los céspedes pueden ser atacados por agentes bióticos (vivientes) y abióticos (no-vivientes). Los agentes bióticos incluyen patógenos (hongos, bacterias, virus, citoplasma etc) y plagas como nematodos, insectos, ácaros, moluscos y vertebrados (roedores, pájaros etc.). Los factores abióticos incluyen: condiciones climáticas como las temperaturas extremas, el exceso o deficiencia de agua, luz o nutrientes, suelo compacto, sequía, estancamiento de agua y/o prácticas de cultivo adversas. Estos factores pueden ser el resultado de una interacción que ha existido por un periodo largo de tiempo entre la planta y uno o más factores como la falta de espacio para un crecimiento radicular óptimo, la presencia de niveles crónicos de contaminantes del aire o agua.
[Turfgrass stands can be injured and damaged by biotic (living) and abiotic (non-living) agents. Most abiotic diseases cause generalized symptoms such as wilting, yellowing, thinning and the development of smaller than normal grass blades, limited root growth or slow growth. Based solely on symptoms, however, determining whether the condition is caused by a biotic or an abiotic agent can be challenging. In many cases, a proper diagnosis of abiotic diseases requires thorough examination of the site, knowledge of relevant past and present environmental conditions, in-depth knowledge of plant species biology, site management history, and an orderly series of tests to determine possible causes.]
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Turfgrass stands can be injured and damaged by biotic (living) and abiotic (non-living) agents. Most abiotic diseases cause generalized symptoms such as wilting, yellowing, thinning and the development of smaller than normal grass blades, limited root growth or slow growth. Based solely on symptoms, however, determining whether the condition is caused by a biotic or an abiotic agent can be challenging. In many cases, a proper diagnosis of abiotic diseases requires thorough examination of the site, knowledge of relevant past and present environmental conditions, in-depth knowledge of plant species biology, site management history, and an orderly series of tests to determine possible causes.
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C 1174
Pecan Management
This circular is a calendar-based management reference for pecan production in the Southeastern U.S. It provides an easy-to-use graphical guide for management decisions regarding crop phenology, irrigation and fertilization requirements, disease, and insect and mite arthropod pest management. It also includes information on production activities including timing for planting, harvesting, and nutrient sampling. Information on bearing and non-bearing trees are provided to address the different management requirements for these orchards. Temporally precise management decisions on horticultural activities, disease suppression, and insect pest control will maximize efficiency, improve tree health, optimize crop quality and yield, and promote ecological and economic sustainability.
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This publication provides updated (2023) Southeast-specific information on approved National Organic Program (NOP) disease and pest management options for blueberry production and addresses the issues most commonly encountered under the unique growing conditions of the Southeast U.S. This publication is not intended to provide all details on organic blueberry production, although it does include the production methods that reduce the impact of plant disease and pest issues. Emphasis in an organic system should be on cultural practices that reduce disease and pest pressure rather than pesticide applications. NOP-approved pesticides are usually less efficacious than conventional products. The pesticide label is the law and supersedes any information on pesticide use contained in this guide. Because environmental conditions and grower application methods vary widely, suggested use does not imply that performance of the pesticide will always conform to the pest control standards indicated by experimental data.
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Sweet potatoes are members of the Convolvulaceae family, which includes morning glory. They are native to tropical America and are a perennial plant there. In more temperate regions such as the United States, they are frost-sensitive and grown as annuals. Sweet potatoes are grown for their edible root, which is often mistakenly called a tuber, like white or Irish potatoes (Solanum tuberosum). However, the edible portion of the sweet potato is a true root and will continue to enlarge as long as the plant continues to grow. Sweet potatoes have been grown by Native Americans in Mexico, Central America, Peru, Ecuador, and the U.S. for thousands of years. This bulletin is a comprehensive resource on the production, disease, insect, nematode and weed management of sweet potato.
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C 945
Home Garden Figs
Most people are fond of figs. They are tasty and can be eaten fresh, preserved, or used for baking and making desserts. Figs will do well in most parts of Georgia except the mountainous areas.
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Leyland cypress has become one of the most widely used plants in commercial and residential landscapes across Georgia as a formal hedge, screen, buffer strip or wind barrier. Leyland cypress (x Cupressocyparis leylandii) is a graceful, rapidly growing evergreen tree that is adapted for growth within the 6-10a USDA hardiness zones. Leyland cypress is considered relatively pest-free; however, because of its relatively shallow root system, and because they are often planted too close together and in poorly drained soils, Leyland cypress is prone to root rot and several damaging canker diseases, especially during periods of prolonged drought. Disease management is, therefore, a consideration for Leyland cypress.
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