Now showing items 1-10 of 28
First Report of Citrus Blight in Costa Rica
Citrus blight (CB), causing a chronic decline of citrus, has been an important disease in Florida for over 100 years. CB was first reported in Brazil in the 1980s and is now responsible for the removal of nearly 10% of the ...
Catharanthus roseus (Apocynaceae) naturally infected with diverse phytoplasmas in Costa Rica
Catharanthus roseus (Apocynaceae) naturalmente infectada con diversos fitoplasmas en Costa Rica
Phytoplasmas (class Mollicutes) are causal agents of plant diseases with an economic impact on crops or threatening local biodiversity. A survey was conducted from 2012 to 2016 on infected Catharanthus roseus plants that ...
Occurrence of Squash yellow mild mottle virus and Pepper golden mosaic virus in Potential New Hosts in Costa Rica
Leaf samples of Solanum lycopersicum, Capsicum annuum, Cucurbita moschata, Cucurbita pepo, Sechium edule and Erythrina spp. were collected. All samples were positive for begomoviruses using polymerase chain reaction and ...
Detección del viroide de la exocortis en plantaciones comerciales, utilizando la selección 861-S1 del cidro Etrog (Citrus medica L.)
Detection of CEVd in an orange grove using the Arizona 861-S1 selection of the ‘Etrog’ citron
La prueba de infectividad empleada tradicionalmente para el viroide de la exocortis consiste en injertar yemas de los árboles por evaluar en clones sensibles, como el cidro Arizona 861-S1, el cual ha sido previamente ...
First Report of Citrus variegation virus in Palestine Sweet Lime, as Coffee Shade in Costa Rica
Symptoms resembling those of Citrus variegation virus (CVV) were observed in old Palestine sweet lime trees (Citrus limettioides Tan.) used as coffee shade in the Central Valley in Costa Rica. The symptoms include leaf ...
First report of Iris yellow spot virus in Costa Rica
Iris yellow spot virus (IYSV), an emerging disease of onion crops, was identified by transmission electron microscopy, enzyme linked immunosorbent assay, and reverse transcription polymerase chain reaction in Costa Rica. ...
First report of Xylella fastidiosa infecting coffee in Costa Rica
In 1995, severe symptoms were observed on ‘Caturra’ and ‘Catuaí’ coffee (Coffea arabica L.) varieties in farms in the southern part of the Central Valley in Costa Rica. Symptoms were reduced leaf size, malformation of ...
First Report of an Aster Yellows Subgroup 16SrI-B Phytoplasma Infecting Chayote in Costa Rica
An outbreak of a witches' broom disease affected approximately 20% of plants in several chayote (Sechium edule (Jacq.) Schwartz) fields in the commercial production area of the Ujarrás Valley, Cartago Province, Costa Rica ...
First report of Sugarcane yellow leaf virus (ScYLV) in Costa Rica
In Costa Rica, sugarcane plants with symptoms similar to those described for yellow leaf syndrome (YLS) (1,2) were first observed in 1994 in research plots of imported material in the midland areas of San Carlos and ...