Response of Soybean to Halosulfuron Herbicide

Table 1

Soybean varieties, maturity group, and growth stage at the time of halosulfuron application in greenhouse and field studies.

		Soybean growthstage^a
		Greenhouse	Field
Variety^b	Maturity group		USDA^c	MAFES^c
DP 4112 RR/S	4.1	30 cm tall, V3	25 cm tall, V4	75 cm tall, R2
DP 4888 RR/S	4.8	30 cm tall, V3	25 cm tall, V4	75 cm tall, R2
DP 4919 RR/S	4.9	30 cm tall, V3	25 cm tall, V4	75 cm tall, R2
07-4492 RR/S	4.9	28 cm tall, V3	25 cm tall, V4	75 cm tall, R2
DP 5115 RR/S	5.1	29 cm tall, V3	23 cm tall, V4	73 cm tall, R2
DP 5335 RR/S	5.3	29 cm tall, V3	25 cm tall, V4	75 cm tall, R2
DP 4748 S	4.7	30 cm tall, V3	28 cm tall, V4	83 cm tall, R2
P 95M90 RR/S	5.9	35 cm tall, V3	28 cm tall, V4	83 cm tall, R2
AG 4903 RR/S	4.9	30 cm tall, V3	23 cm tall, V4	73 cm tall, R2
DP 4690 RR	4.7	28 cm tall, V3	28 cm tall, V4	83 cm tall, R2
DP 5989	5.9	33 cm tall, V3	28 cm tall, V4	83 cm tall, R2

^aSoybean growth stage: V3—second trifoliolate, V4—third trifoliolate, R2—full bloom, flower in top 2 nodes [14]. ^bAbbreviations: AG, Asgrow; DP, DeltaPine; P, Pioneer; RR, Roundup Ready; S, sulfonylurea tolerant. ^cField study locations.