Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean

Table 2

Accumulated rainfall following PRE herbicide application from 12 trials conducted near Crawfordsville, Gregory, and Marion, Arkansas, in 2016 and 2017^a.

	Rainfall^b
	2016				2017
DAT	Crawfordsville^c		Gregory	Marion	Crawfordsville	Marion
	cm
7	0.28	3.91	1.47	0.58	3.15	1.57
14	3.63	0	0.25	3.53	1.57	1.98
21	4.90	3.68	3.96	1.80	0	3.45
28	0.28	2.59	4.75	0.18	3.15	1.19
35	3.91	2.06	0.25	3.91	6.80	0
42	0	0.18	0	0	0.23	3.18

^aAbbreviation: DAT, days after treatment. ^bValues represent cumulative precipitation from previous timing. ^cTwo columns are presented for Crawfordsville in 2016 as three experiments were established on May 12^th, 2016, represented by the first column, and one was established on June 10^th, 2016, represented by the second column.