syngenta

Cylindrocladium Root Rot — Cylindrocladium spp.

Spotlight Name Archive: Rots

Spotlight Header Archive: Disease Diagnostics Photo Library

Host: Azalea, heliconia, rose and spathiphyllum
Symptoms: Yellowing of lower leaves and wilting are indications of root rot. Cylindrocladium stem cankers cause a brown, internal discoloration of the stem of azalea. The vascular browning extends to approximately 1 inch above the soil line. Angular leaf spots, bounded by leaf veins, are caused by Cylindrocladium on azalea. Defoliation may occur. Root and petiole rot are common on spathiphyllum.
Conditions Favoring Disease: The disease on azaleas occurs only in greenhouses and is favored by high humidity and temperatures of approximately 85°F.
How Pathogen Survives/Disperses: The conidia are easily carried on hands and by wind and water. Water-dispersed conidia from fallen infected leaves can also wash into the soil where they can cause root rot. Microsclerotia survive in soil for years.
Photo and write up provided by Syngenta Professional Products

from Syngenta Horticultural Services




Latest Photos see all »

Lupine Staircase series (Green Fuse Botanicals)
IMG_0518 copy
IMG_0469 copy
IMG_1488 copy
IMG_1587 copy
IMG_1517 copy
40under40
GPN recognizes 40 industry professionals under the age of 40 who are helping to determine the future of the horticulture industry. These individuals are today’s movers and shakers who are already setting the pace for tomorrow.
Coch-6
albanojudy_0
MattTaylor
Showalter4
Hurd1
Brill-383533_584336264693_35308621_n.jpg
Johnson-Mark-fam-disney-Mark-J-RO.jpg
krugbrian
Moores2011print_17

75 Applewood Drive, Suite A
P.O. Box 128
Sparta, MI 49345

616.887.9008
GPN September_Cover
Interested in reading the print edition of Greenhouse Product News? Preview our digital edition »

Get one year of Greenhouse Product News in both print and digital editions for free.

Subscribe Today »


Be sure to check
out our sister site.
website development by deyo designs