Some of the Weeds Most Difficult to Control

Some of the weeds most difficult to control

• Sub-Saharan Africa including Madagascar

Acanthospermum austral, Acanthospermum hispidum, Aframomum sp, Ageratum conyzoides, Alectra vogelii, Alternanthera sessilis, Amaranthus spinosus, Amaranthus viridus, Argemone Mexicana, Bilderkia sp, Borreria alata, Brachiaria spp, Centrosema pubescens, Chromolaena odorata, Commelina benghalensis, Commelina diffusa, Commelina forskalaei, Commelina umbella, Convolvulus arvensis, Cosmos bipinnatus, Crotalaria spp, Cuscuta sp, Cynodon dactylon, Cyperus esculentus, Cyperus rotundus, Dactyloctenium aegyptium, Datura sp, Digitaria abyssinica, Digitaria ciliaris, Digitaria horizontalis, Digitaria nuda, Diplachne fusca, Eleocharis sp., Eleusine indica, Emex sp, Euphorbia heterophylla, Euphorbia hirta, Fallopia sp, Hyptis sp, Imperata cylindrica, Ipomoea eriocarpa, Ischaemum rugosum, Kyllinga squamulata, Leersia hexandra, Leptochloa sp, Lolium sp, Melochia sp., Mimosa invisa, Mimosa pigra, Orobanche cernua, Orobanche crenata, Orobanche ramosa, Oryza bartii, Oryza longistaminata, Oryza punctata, Panicum repens, Parthenium hysterophorus, Paspalum conjugatum, Paspalum orbiculare, Paspalum scrobiculatum, Pennisetum pedicellatum, Pereskia aculeate, Physalis angulata, Portulaca meridiana, Prosopis juliflora, Raphanus sp, Roettboellia cochinchinensis, Rottboellia exaltata, Schizachyrium platyphyllum, Setaria sp, Snowdenia polystachya, Sorghum halepense, Striga asiatica, Striga gesnerioides, Striga hermonthica, Tagetus sp, Xanthium sp.

• North Africa (Morocco)

Ammania coccinea, Avena sterilis, Bromus rigidus, Cardaria draba, Centaurea diluta, Echinochloa phyllopogon, Gladiolus segetum, Papaver rhoeas, Solanum elaeagnifolium, Viscum cruciatum, Ziziphus lotus.

• Ecuador

Caperonia palustris, Cyperus rotundus, Digitaria sanguinalis, Eichhornia crassipes, Eleusine indica, Euphorbia heterophylla, Ipomoea spp, Leptochloa filiformis, Panicum maximum, Rottboellia cochinchinensis, Sorghum halepense, Trifolium sp.

, • Guyana

Brachiaria arrecta, Cambomba aquatica, Cynodon dactylon, Cyperus rotundus, Echinochloa colona, Ischaemum rugosum, Portulaca oleracea, Sagittaria guyanensis, Red rice.

• Lao PDR

Ageratum conyzoides , Amaranthus spinosus , Cyperus iria, Cyperus rotundus , Echinochloa colona, Eleusine indica , Fimbristylis miliacea, Imperata cylindrica, Marselea crenata, Mimosa invisa, Mimosa pudica.

• Nicaragua

Amaranthus spinosus, Combretum fruticosum , Cyperus Rotundus, Sida acuta, Sorghum halepense, Rottboellia cochinchinensis.

• Vietnam

Cyperus rotundus, Imperata cyindrica, Leptochloa chinensis.

Gualbert Gbèhounou

based on a 2010 survey report