several species of phytophthora cause crown and root rot diseases of herbaceous and woody plants. crown and root rot of pistachio trees cause significant damages in infected orchards. the effect of foliar application with elite (fosetyl-al) in 2 and 2.5 g/l was evaluated in greenhouse experiments. the frequency of mortality, fresh and dry weight of roots and shoots, height, intensity of crown r...

Although citrus is indigenous to southeast Asia, oranges were first planted commercially in central Arizona in the late 1800s. Today commercial production is centered in several warm and low-frost-risk areas of central and southwestern Arizona. A great number of citrus varieties are also widely planted in home gardens. Many diseases of citrus have been described world wide and have colorful and...

Citrus production is declining worldwide due to several biotic and abiotic factors. The diseases caused by Phytophthora spp. present major economic risks since they are soil-borne spread quickly if environmental conditions favorable, or irrigation poorly managed. species in all citrus-producing areas around the world causing significant losses crop yield affecting tree health. Bark infection, d...

1Institute of Plant Protection, Guangxi Academy of Agricultural Sciences, Nanning, Guangxi 530007, China 2Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Nanning,Guangxi 530007, China 3Department of Biotechnology, Guangxi Agricultural VocationTechnical College, Nanning, Guangxi 530007, China 4School of Environmental Sciences, University of Guelph, Guelph, Ontario N1G 2W1, ...