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cogon grass biological control


7 Images
3970057
L. M. Marsh
Florida Department of Agriculture and Consumer Services

Far left, a partial plant showing stems, leaves, roots and elongating rhizomes. Middle, a stem with leaves. Far right, plume-like inflorescence of many paired flowers

3970058
James R. Meeker
USDA Forest Service

a severe infestation in a longleaf pine upland in central Florida

3970059
Andrea Van Loan
Florida Department of Agriculture and Consumer Services

general distribution throughout the world depicted by areas of white (based on information from Holm et al., 1997)

3970060
Andrea Van Loan
Florida Department of Agriculture and Consumer Services

general distribution in the United States depicted by area in red

3970061
L. M. Marsh
Florida Department of Agriculture and Consumer Services

portion of leaf blade showing off-center midrib and scabrous leaf margins

3970062
Camilla B. Yandoc
USDA Agricultural Research Service

high levels of disease and damage severity in a mini-plot following treatment with a potential mycoherbicide consisting of a formulation of Bipolaris sacchari fungal spores, an oil emulsion and water.

3970063
Andrea Van Loan
Florida Department of Agriculture and Consumer Services

A. (1) eggs, (2) larva, (3) elongated gall, and (4) section of the gall following adult release, (5) adult. B. section of gall showing the pupa. C. Life stages of chalcid wasp parasite of O. javanica (From Soerjani, 1970)