SAN 582, alachlor, and metolachlor control triazine-resistant (TR) smooth pigweed (Amaranthus hybridus) in no-till corn (Zea mays)

SAN 582 at 1.1, 1.2, 1.3, 1.5, and 1.6 kg ai/ha; alachlor at 1.7, 2.2, and 2.8 kg/ha; and metolachlor at 1.7, 2.2, and 2.8 kg/ha were applied preemergence without and with atrazine at 1.7 kg/ha in no-till corn at two locations near Blacksburg, VA, in 1993 and 1994. SAN 582, alachlor, and metolachlor...

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Bibliographic Details
Published in:Weed technology 1997-07, Vol.11 (3), p.623-625
Main Authors: Foy, C.L, Witt, H.L
Format: Article
Language:English
Subjects:
ALACHLOR
ALACHLORE
ALACLORO
AMARANTHUS
AMIDAS
AMIDE
AMIDES
APPLICATION DATE
APPLICATION RATES
Biological and medical sciences
CERO-LABRANZA
CHEMICAL CONTROL
CHOIX DE LA DATE
CONTROL QUIMICO
Corn
CROP YIELD
DATE D'APPLICATION
DESHERBAGE
DIMETHENAMID
DOSE D'APPLICATION
DOSIS DE APLICACION
ELECCION DE LA EPOCA
ESCARDA
FECHA DE APLICACION
Fundamental and applied biological sciences. Psychology
HERBICIDAS
HERBICIDE
HERBICIDE MIXTURES
HERBICIDES
LUTTE CHIMIQUE
MALEZAS
MAUVAISE HERBE
METOLACHLOR
METOLACHLORE
METOLACLORO
No tillage
NON TRAVAIL DU SOL
Parasitic plants. Weeds
Phytopathology. Animal pests. Plant and forest protection
RENDEMENT DES CULTURES
RENDIMIENTO DE CULTIVOS
RESISTANCE AUX PRODUITS CHIMIQUES
RESISTANCE TO CHEMICALS
RESISTENCIA A PRODUCTOS QUIMICOS
Soil organic matter
Sorghum
Test ranges
Tillage
TIMING
TRIACINA
TRIAZINE
TRIAZINES
VIRGINIA
VIRGINIE
WEED CONTROL
Weed science
WEEDS
ZEA MAYS
ZERO TILLAGE
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Description
Summary:SAN 582 at 1.1, 1.2, 1.3, 1.5, and 1.6 kg ai/ha; alachlor at 1.7, 2.2, and 2.8 kg/ha; and metolachlor at 1.7, 2.2, and 2.8 kg/ha were applied preemergence without and with atrazine at 1.7 kg/ha in no-till corn at two locations near Blacksburg, VA, in 1993 and 1994. SAN 582, alachlor, and metolachlor controlled TR-smooth pigweed when applied without or with atrazine, and with only a few exceptions, control was greater than 60%. The highest rate of individual herbicides was more effective than the lowest rate in most cases. Early control of TR-smooth pigweed was similar from all three herbicides, especially at higher rates, but control later in the season tended to be best with alachlor. As expected, atrazine applied alone did not control TR-smooth pigweed, and crop yields were increased with herbicide treatments compared to no treatment.
ISSN:0890-037X
1550-2740
DOI:10.1017/S0890037X0004553X