2021 journal article

Herbicide systems including linuron for Palmer amaranth (Amaranthus palmeri) control in sweetpotato

WEED TECHNOLOGY, 35(1), 49–56.

author keywords: Flumioxazin; linuron; oryzalin; S-metolachlor; Palmer amaranth; Amaranthus palmeri S; Watson AMAPA; Weed control; herbicide tillage; herbicide cultivation
Source: Web Of Science
Added: March 1, 2021

Abstract Field studies were conducted to determine sweetpotato tolerance to and weed control from management systems that included linuron. Treatments included flumioxazin preplant (107 g ai ha −1 ) followed by (fb) S -metolachlor (800 g ai ha −1 ), oryzalin (840 g ai ha −1 ), or linuron (280, 420, 560, 700, and 840 g ai ha −1 ) alone or mixed with S -metolachlor or oryzalin applied 7 d after transplanting. Weeds did not emerge before the treatment applications. Two of the four field studies were maintained weed-free throughout the season to evaluate sweetpotato tolerance without weed interference. The herbicide program with the greatest sweetpotato yield was flumioxazin fb S -metolachlor. Mixing linuron with S -metolachlor did not improve Palmer amaranth management and decreased marketable yield by up to 28% compared with flumioxazin fb S -metolachlor. Thus, linuron should not be applied POST in sweetpotato if Palmer amaranth has not emerged at the time of application.