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)

Study Name: Influence of row spacing, plant populations, application timing, and tillage system on weed control in LL canola (conventional).

Study Number: 9903c (conventional)

Objectives: Determine the influence of row spacing (6 and 12-inch), canola populations (8 and 12 plants per square foot), various herbicide applications, and tillage system (conventional and no-till) on weed control in Liberty Link canola.

Results: The study was established on Wayne Ott's farm due to wet conditions in other fields. The second replication of the no-till trial could not be seeded due to wet conditions in a high alkali spot. The trial was destroyed by hail in July. After rating the plot for kochia control we disked the trial under. Kochia control was clearly better with Liberty than by Treflan alone.

Table. Influence of row spacing, plant populations, and application timing on weed control in glufosinate-tolerant canola.

July 21
Treatment Rate Timing Kocz
Treflan 1.5 pt PPI 92
Liberty + AMS 27 fl oz + 3 lb 3-4 leaf  
6-inch rows      
8 plants / sq ft      
       
Treflan 1.5 pt PPI 94
Liberty + AMS 27 fl oz + 3 lb 3-4 leaf  
6-inch rows      
16 plants / sq ft      
       
Treflan 1.5 pt PPI 92
Liberty + AMS 27 fl oz + 3 lb 3-4 leaf  
12-inch rows      
8 plants / sq ft      
       
Treflan 1.5 pt PPI 94
Liberty + AMS 27 fl oz + 3 lb 3-4 leaf  
12-inch rows      
16 plants / sq ft      
       
Treflan 1.5 pt PPI 57
Assure II 8 fl oz 3-4 leaf  
6-inch rows      
8 plants / sq ft      
       
Treflan 1.5 pt PPI 37
Assure II 8 fl oz 3-4 leaf  
6-inch rows      
16 plants / sq ft      
       
Treflan 1.5 pt PPI 48
Assure II 8 fl oz 3-4 leaf  
12-inch rows      
8 plants / sq ft      
       
Treflan 1.5 pt PPI 47
Assure II 8 fl oz 3-4 leaf  
12-inch rows      
16 plants / sq ft      
       
No herbicide     0
6-inch rows      
8 plants / sq ft      
       
No herbicide     0
6-inch rows      
16 plants / sq ft      
       
No herbicide     0
12-inch rows      
8 plants / sq ft      
       
No herbicide     0
12-inch rows      
16 plants / sq ft      
LSD (0.05)     15
CV     19

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Last Updated: Thursday, May 27, 2004 02:49:18 PM
Published by North Dakota State University