The allelopathic effect of three Amaranthus spp. (pigweeds) on wheat (Triticum durum)

alelopatia allelopathie allelopathy altura amaranthus amaranthus blitoides amaranthus retroflexus application rates crop yield dose d'application germination growth rate hauteur height jordan jordania jordanie malezas mauvaise herbe paille paja plantas accidentales racine rendement rendement des cultures rendimiento rendimiento de cultivos roots stems straw tallo taux de croissance tige trigo triticum durum volunteer plants weeds wheats yields