First Report of Amaranthus palmeri S. Wats. in Cotton, Maize and Sorghum in Greece and Problems with Its Management

Amaranthus palmeri S. Wats., or commonly Palmer amaranth, is an invasive plant species that has invaded many countries worldwide and causes significant yield losses to annual spring crops. amaranth biotypes were detected in maize sorghum fields Western Greece cotton Central 2020. The infestations recorded both inside the crops margins of fields, indicating could be characterized as weed for these regions and, thus, must urgently managed. Four screened resistance 2,4-D nicosulfuron by using NDVI, canopy cover, photochemical efficiency, height fresh weight values. All showed nicosulfuron. Resistance cases important herbicides (i.e., ALS synthetic auxins) crops, such cotton, indicate management become even more challenging if farmers do not adopt integrated strategies tools manage this weed. eradication plants imperative, since it yet dispersed several agricultural areas Greece. recommended enlisted quarantine pest regulation