Biological Control of Weeds by Using Plant Pathogens

 

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Biological control of guineagrass (Panicum maximum) with a cocktail of three fungi

Healthy plants are on the left; treated plants are on the right.

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Biological control of tropical soda apple (Solanum viarum) by tobacco mild green mosaic virus

Healthy plants are on the left; virus-inoculated plants are on the right.

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Biological control of waterhyacinth (Eichhornia crassipes) by Cercospora piaropi and Myrothecium roridum

Healthy plants are on the left; treated plants are on the right.

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Phomopsis amaranthicola, a biological control agent for Amaranthus spp.

Leaf and stem lesions caused by P. amaranthicola on Amaranthus retroflexus on the left; a healthy and a P. amaranthicola-infected A. lividus plant on the right.

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Dactylaria higginsii, a biological control agent for Cyperus rotundus

Conidia, conidiophores and appressoria of D. higginsii on a C. rotundus leaf, on the left; the efficacy of D. higginsii conidia applied in various carriers on C. rotundus, on the right.