Table 4: Visual response, height reduction, and fresh-weight reduction of common waterhemp 21 d after applicationin the greenhouse.

Treatment Rate Resistant or nonresistant biotype Control Height reduction Fresh-weight reduction g ai/ha     %   Nontreated   Protox-resistant 0 0 0 Glyphosate + DAS 840 Protox-resistant 100 100 100 Lactofen + COC + DAS 220 Protox-resistant 6 19 24 Lactofen + COC + DAS 880 Protox-resistant 30 39 37 Sulfentrazone + DAS + COC 240 Protox-resistant 8 30 28 Acifluorfen + COC + DAS 420 Protox-resistant 10 25 29 Flumioxazin + COC + DAS 72 Protox-resistant 19 29 36 Fomesafen + COC + DAS 330 Protox-resistant 20 28 23 Imazethapyr + NIS 70 Protox-resistant 0 −17 −30 Mesotrione + COC + DAS 105 Protox-resistant 30 24 22 Atrazine + COC 1680 Protox-resistant 27 32 36 Nontreated   Nonresistant 0 0 0 Lactofen + COC + DAS 220 Nonresistant 100 100 100 LSD ()     19 21 22

Additives included crop-oil concentrate (COC) at 1.2 l/ha, diammonium sulfate (DAS) at 2.8 kg/ha, and nonionic surfactant (NIS) at 0.25% v/v.