North Central Research Extension Center 2001 Weed Control Studies

North Dakota State University

NDSU

North Central Research Extension Center

Brian Jenks Weed Scientist bjenks@ndsuext.nodak.edu
Denise Markle Research Specialist dmarkle@ndsuext.nodak.edu	Gary Willoughby Research Specialist gwillough@ndsuext.nodak.edu

5400 Highway 83 South
Minot, ND 58701-7662
701.857.7679
701.857.7676 (fax)

Canola systems (2001)

Several varieties of canola (listed in the table below) were seeded May 9 into 6-inch rows at 700,000 pls/A in a conventional tillage system. Individual plots were 15 x 30 ft and replicated four times. Treatments were applied preplant incorporated (PPI) on May 2, or postemergence on May 25 (0-2 lf), June 7 (3-4 lf), or June 12 (5-6 lf). Kochia was the primary weed.

Treatment^a	Rate	Timing	Kochia control	Yield	Tst wt.
			%	lb/A	lb/bu
HUDSON Treflan	1.5 pt	PPI	80	1891	51.7
HUDSON Treflan / Assure II	1.5 pt / 9 fl oz	PPI / 3-4 lf	75	1722	52.3
HYOLA 401 Treflan	1.5 pt	PPI	83	2154	51.5
HYOLA 401 Treflan / Assure II	1.5 pt / 9 fl oz	PPI / 3-4 lf	78	2233	51.8
LG3295 (RR) Roundup	1 pt	3-4 lf	99	2260	51.7
LG3295 (RR) Roundup / Roundup	1 pt / 1 pt	0-2 lf / 5-6 lf	99	2164	51.7
HYOLA 357 (RR) Roundup	1 pt	3-4 lf	100	2345	51.2
HYOLA 357 (RR) Roundup / Roundup	1 pt / 1 pt	0-2 lf / 5-6 lf	100	2386	51.1
PHOENIX (LL) Liberty	34 fl oz	3-4 lf	98	1838	51.3
INVIGOR 2373 (LL) Liberty	34 fl oz	3-4 lf	99	2159	53.1
45A71 (CC) Raptor	4 fl oz	3-4 lf	70	939	50.6
46A76 (CC) Raptor	4 fl oz	3-4 lf	79	1785	52.1
MINOT RR Roundup	1 pt	3-4 lf	98	2260	52.1
SW RIDER Roundup	1 pt	3-4 lf	99	2388	51.3
SW RIDER Roundup / Roundup	1 pt / 1 pt	0-2 lf / 5-6 lf	100	2238	51.2
LSD			5	291	0.6
CV			4	10	0.8

^{aRoundup and Liberty treatments were applied with
1% AMS. Raptor was applied with 0.25% NIS and 1 qt 28% N. Assure II was applied
with 1% COC.}

Roundup and Liberty effectively controlled kochia with one or two applications. Treflan and Raptor provided only fair kochia control, which contributed to lower canola yields. Hyola 401 yielded 250-500 lb/A higher than Hudson with the same herbicide treatments (Treflan/Assure II). The Clearfield variety, 46A76, yielded almost twice that of 45A71. The LibertyLink hybrid, InVigor 2373, yielded 300 lb/A higher than the open-pollinated variety, Phoenix. The Roundup Ready variety yields were statistically similar.

PLEASE NOTE: Some treatments shown may be experimental and not labeled for general use. Always check herbicide labels before applying.
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North Dakota State University NDSU Agriculture VP and Dean of Agriculture, Food Systems, and Natural Resources NDSU Extension Service College of Agriculture, Food Systems, and Natural Resources State Board of Agricultural Research and Education	Brian Jenks, Weed Scientist North Central Research Extension Center 5400 Highway 83 South Minot, ND 58701--7662 Tel. 701.857.7677 Fax. 701.857.7676 http://www.ag.ndsu.nodak.edu/minot

Last Updated: Thursday, June 09, 2005 01:06:43 PM
Published by North Dakota State University