Abstract
Field studies were conducted during 1999 and 2000 to compare weed control after fall and early-preplant (EPP) herbicide applications in no-till soybean. Three residual treatments (chlor- imuron plus metribuzin, chlorimuron plus sulfentrazone, and metribuzin) were applied at two rates and timings (fall and 30 d EPP) either alone or in combination with glyphosate and 2,4-D. The addition of glyphosate and 2,4-D to fall-applied residual herbicides significantly increased control of common chickweed, annual bluegrass, cressleaf groundsel, and shepherd's-purse. The effect of application rate on weed control was species dependent. Fall-applied residual herbicides were comparable with EPP treatments with respect to winter annual weed control; however, at planting control of summer annual weed species with fall treatments was less consistent compared with EPP residual herbicides.
Original language | English (US) |
---|---|
Pages (from-to) | 887-892 |
Number of pages | 6 |
Journal | Weed Technology |
Volume | 18 |
Issue number | 4 |
DOIs | |
State | Published - Oct 2004 |
Keywords
- AMATA
- AMBEL
- AMBTR
- CHEAL
- Fall applied
- LAMAM
- LAMPU
- No till
- Residual control
- Winter annuals
ASJC Scopus subject areas
- Agronomy and Crop Science
- Plant Science