| interference of redroot pigweed (amaranthus retroflexus l.) in green bean (phaseolus vulgaris l.). | several species of amaranthus are known to reduce crop yields and interference with harvest throughout the iran. in the past few years, the occurrence of some amaranthus species including of redroot pigweed (amaranthus retroflexus l.) increased throughout the east azerbaijan province in iran, supplanting all the other amaranthus species in large areas of the region and causing concern among farmers and researchers. green bean (phaseolus vulgaris l.) is one of the tropical pulse crops, that c4 we ... | 2006 | 17390819 |