Oakes Irrigation Research Site |
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Carrington
Research Extension Center * North Dakota State University |
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P.O. Box 531,
Oakes, ND 58474-0531, Phone: (701) 742-2744, FAX: (701) 742-2700, E-mail: |
Blaine.Schatz@ndsu.edu |
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Leonard.Besemann@ndsu.edu |
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Early-season Weed Control in Onion Using
Micro-rates |
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H. Hatterman-Valenti and C. Auwarter |
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This study was conducted at the
Oakes Irrigation Research Facility near Oakes, North Dakota to compare
early-season weed control of bromoxynil (Buctril and Broclean) and
oxyfluorfen (GoalTender) applied at micro rates to standard pre-emergence
treatment of DCPA (Dacthal) and ethofumesate (Nortron) in onion. 'Crockett', 'Patterson', 'Sedona', and
'Talon were planted April 25 with 16" centers and a planting population
of 250,000 seeds/acre. PRE treatments
included 1 and 2 lb/ac ethofumesate and 13.33 lb/acre DCPA and were
applied 11 days after planting (DAP).
Micro rate applications began between the flag-leaf and one-leaf
stage, 27 DAP. Bromoxynil and
oxyfluorfen were applied at the 0.25 and 0.13 times the lowest labeled
rate and applied in four of five sequential applications when weeds and
onions were in seedling growth stages.
Petroleum oil-surfactant (Herbimax) (1 pt/acre) was tank mixed with
the micro rate application. All
treatments received bromoxynil at 0.25 lb/acre and oxyfluorfen at
0.50 lb/acre when onions were around the 5 and 9-leaf stage. |
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Table 1. Treatment Application Information. |
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Table 4.
Crockett onion yield results. |
Date: |
5/6/14 |
5/22/14 |
5/29/14 |
6/4/14 |
6/13/14 |
6/20/14 |
6/30/14 |
7/23/14 |
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Trt |
------------Onion Bulb Counts in 6 row
feet------------ |
----------------------------CWT/A--------------------------- |
Time: |
A |
B |
C |
D |
E |
F |
G |
H |
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No. |
<1" |
1-2.25" |
2.25-3" |
3-4" |
>4" |
Total |
<1" |
1-2.25" |
2.25-3" |
3-4" |
>4" |
Total |
Sprayer: |
GPA: |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
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PSI: |
40 |
40 |
40 |
40 |
40 |
40 |
40 |
40 |
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1 |
0.7b |
4.7c |
12.5abc |
10.0ab |
0a |
0.0a |
3.63a |
34bcd |
211abc |
312a |
0a |
565abc |
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Nozzle: |
8002 |
8002 |
8002 |
8002 |
8002 |
8002 |
8002 |
8002 |
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2 |
0.3b |
15.3ab |
16.5ab |
1.0d |
0a |
33.5a |
2.42a |
95abc |
264ab |
29bc |
0a |
388bcd |
Air Temperature (F): |
48 |
72 |
87 |
81 |
59 |
69 |
75 |
79 |
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3 |
0.1b |
9.5abc |
15.3abc |
7.5abc |
0a |
32.8a |
1.21a |
62a-d |
270ab |
219a |
0a |
568abc |
Relative Humidity (%): |
76 |
37 |
24 |
37 |
63 |
83 |
45 |
43 |
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4 |
0.1b |
6.8bc |
14.3abc |
6.8abc |
0a |
28.3ab |
1.21a |
46a-d |
247abc |
200a |
0a |
501abc |
Wind (MPH): |
4.6 |
7 |
10 |
9 |
7 |
7.5 |
11.1 |
7 |
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5 |
0.1b |
20.0a |
7.5cd |
0.5d |
0a |
28.8ab |
1.21a |
125a |
120cd |
5c |
0a |
260de |
Cloud Cover (%): |
100 |
0 |
0 |
10 |
5 |
5 |
50 |
60 |
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6 |
0.0b |
5.9bc |
19.8a |
8.3ab |
0a |
34.0a |
0.0a |
44a-d |
340a |
244a |
0a |
634a |
Onion Leaf Stage: |
PRE |
Flag |
2-Jan |
2 |
3 |
4 |
5 |
9 |
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7 |
0.1b |
12.0abc |
13.0abc |
2.0cd |
0a |
27.8ab |
1.21a |
78a-d |
207abc |
42bc |
0a |
346cde |
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8 |
0.6b |
3.5c |
14.3abc |
8.8ab |
0a |
27.5ab |
3.63a |
22cd |
258ab |
276a |
0a |
566abc |
Table 2. Treatment details. |
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9 |
0.3b |
19.2b |
4.5de |
0.0d |
0a |
24.3ab |
2.42a |
118ab |
65de |
0c |
0a |
184ef |
Trt |
Trt |
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Rate |
App |
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Trt |
Trt |
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Rate |
App |
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10 |
0.1b |
7.3bc |
11.0bcd |
6.8abc |
0a |
25.8ab |
1.21a |
56a-d |
186bc |
201a |
0a |
451abc |
No. |
Name |
Rate |
Unit |
Code |
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No. |
Name |
Rate |
Unit |
Code |
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11 |
0.2b |
6.7bc |
10.3bcd |
10.5ab |
0a |
28.5ab |
1.21a |
41a-d |
184bc |
322a |
0a |
558abc |
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12 |
3.6a |
12.5abc |
1.3e |
0.3d |
0a |
18.8b |
6.05a |
52a-d |
22e |
3c |
0a |
88f |
1 |
Buctril |
4 |
fl oz/ac |
B |
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10 |
Buctril |
4 |
fl oz/ac |
B |
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13 |
0.7b |
10.5abc |
13.5abc |
5.0a-d |
0a |
30.8a |
3.63a |
69a-d |
247abc |
114ab |
0a |
471abc |
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Buctril |
4 |
fl oz/ac |
C |
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Buctril |
4 |
fl oz/ac |
C |
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14 |
0.4b |
8.5abc |
11.0bcd |
7.5abc |
0a |
28.3ab |
2.42a |
59a-d |
192bc |
223a |
0a |
486abc |
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Goal Tender |
2 |
fl oz/ac |
D |
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Buctril |
4 |
fl oz/ac |
D |
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15 |
0.1b |
11.7abc |
12.0bc |
4.3bcd |
0a |
28.5ab |
1.21a |
107ab |
213abc |
123ab |
0a |
473abc |
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Goal Tender |
2 |
fl oz/ac |
E |
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Goal Tender |
2 |
fl oz/ac |
D |
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16 |
0.1b |
3.5c |
12.8abc |
10.8a |
0a |
27.5ab |
1.21a |
19d |
225abc |
346a |
0a |
594ab |
2 |
Buctril |
2 |
fl oz/ac |
B |
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Buctril |
4 |
fl oz/ac |
E |
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Buctril |
2 |
fl oz/ac |
C |
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Goal Tender |
2 |
fl oz/ac |
E |
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LSD (P=0.05) |
0.5 |
1.0 |
4.7 |
3.8 |
0 |
6.2 |
3.32 |
3 |
81 |
5 |
0 |
138 |
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Buctril |
4 |
fl oz/ac |
D |
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11 |
Buctril |
4 |
fl oz/ac |
B |
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Buctril |
2 |
fl oz/ac |
E |
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Buctril |
4 |
fl oz/ac |
C |
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Table 5.
Patterson onion yield results. |
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Goal Tender |
2 |
fl oz/ac |
E |
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Buctril |
4 |
fl oz/ac |
D |
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Trt |
------------Onion Bulb Counts in 6 row
feet------------ |
----------------------------CWT/A--------------------------- |
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Buctril |
2 |
fl oz/ac |
F |
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Buctril |
4 |
fl oz/ac |
E |
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No. |
<1" |
1-2.25" |
2.25-3" |
3-4" |
>4" |
Total |
<1" |
1-2.25" |
2.25-3" |
3-4" |
>4" |
Total |
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Goal Tender |
2 |
fl oz/ac |
F |
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Goal Tender |
2 |
fl oz/ac |
E |
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3 |
Buctril |
2 |
fl oz/ac |
B |
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Buctril |
4 |
fl oz/ac |
F |
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1 |
0.4a |
14.0ab |
9.5ab |
0.0a |
0a |
24.3a |
2.42a |
97ab |
133abc |
0a |
0a |
232abc |
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Goal Tender |
1 |
fl oz/ac |
B |
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Goal Tender |
2 |
fl oz/ac |
F |
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2 |
0.3a |
18.3ab |
2.0c |
0.0a |
0a |
20.8ab |
2.42a |
94ab |
27d |
0a |
0a |
123de |
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Buctril |
2 |
fl oz/ac |
C |
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12 |
Check |
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3 |
0.1a |
17.5ab |
9.0ab |
0.3a |
0a |
27.0a |
1.21a |
115a |
145ab |
7a |
0a |
269ab |
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Goal Tender |
1 |
fl oz/ac |
C |
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13 |
Broclean |
2 |
fl oz/ac |
B |
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4 |
2.8a |
19.8ab |
2.0c |
0.3a |
0a |
25.0a |
4.84a |
98ab |
28d |
8a |
0a |
139cde |
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Buctril |
2 |
fl oz/ac |
D |
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Broclean |
2 |
fl oz/ac |
C |
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5 |
0.1a |
19.8ab |
5.8abc |
0.0a |
0a |
25.8a |
1.21a |
122a |
85a-d |
0a |
0a |
208a-d |
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Goal Tender |
1 |
fl oz/ac |
D |
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Broclean |
2 |
fl oz/ac |
D |
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6 |
0.0a |
17.8ab |
10.5ab |
0.8a |
0a |
29.0a |
0.0a |
117a |
156ab |
19a |
0a |
293a |
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Buctril |
2 |
fl oz/ac |
E |
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Broclean |
2 |
fl oz/ac |
E |
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7 |
0.4a |
16.8ab |
5.3abc |
0.5a |
0a |
23.3a |
2.42a |
81ab |
76a-d |
15a |
0a |
174bcd |
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Goal Tender |
1 |
fl oz/ac |
E |
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Goal Tender |
2 |
fl oz/ac |
E |
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8 |
0.3a |
19.8ab |
7.8abc |
0.3a |
0a |
28.3a |
2.42a |
122a |
121abc |
8a |
0a |
254ab |
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Buctril |
2 |
fl oz/ac |
F |
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Broclean |
2 |
fl oz/ac |
F |
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9 |
0.0a |
21.3a |
4.8bc |
0.0a |
0a |
26.0a |
0.0a |
120a |
65bcd |
0a |
0a |
185a-d |
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Goal Tender |
1 |
fl oz/ac |
F |
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Goal Tender |
2 |
fl oz/ac |
F |
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10 |
0.4a |
12.5ab |
8.5ab |
1.3a |
0a |
23.0a |
2.42a |
85ab |
136abc |
35a |
0a |
258ab |
4 |
Buctril |
4 |
fl oz/ac |
B |
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14 |
Broclean |
4 |
fl oz/ac |
B |
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11 |
0.1a |
16.3ab |
11.0a |
0.3a |
0a |
27.8a |
1.21a |
107a |
173a |
8a |
0a |
289a |
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Buctril |
4 |
fl oz/ac |
C |
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Broclean |
4 |
fl oz/ac |
C |
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12 |
0.6a |
9.3b |
2.8c |
0.0a |
0a |
13.3b |
2.42a |
35b |
46cd |
0a |
0a |
83e |
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Buctril |
4 |
fl oz/ac |
D |
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Broclean |
4 |
fl oz/ac |
D |
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13 |
0.3a |
14.5ab |
10.5ab |
0.8a |
0a |
26.3a |
2.42a |
90ab |
165ab |
18a |
0a |
275ab |
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Buctril |
4 |
fl oz/ac |
E |
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Broclean |
4 |
fl oz/ac |
E |
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14 |
0.1a |
16.5ab |
4.5bc |
0.5a |
0a |
21.8ab |
1.21a |
91ab |
76a-d |
13a |
0a |
182a-d |
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Buctril |
4 |
fl oz/ac |
F |
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Broclean |
4 |
fl oz/ac |
F |
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15 |
0.1a |
14.3ab |
6.5abc |
0.8a |
0a |
21.8ab |
1.21a |
79ab |
100a-d |
21a |
0a |
201a-d |
5 |
Goal Tender |
2 |
fl oz/ac |
B |
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15 |
Nortron |
32 |
fl oz/ac |
A |
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16 |
0.1a |
12.0ab |
9.3ab |
0.8a |
0a |
22.3ab |
1.21a |
74ab |
146ab |
22a |
0a |
243ab |
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Goal Tender |
2 |
fl oz/ac |
C |
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16 |
Broclean |
4 |
fl oz/ac |
B |
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Goal Tender |
2 |
fl oz/ac |
D |
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Broclean |
4 |
fl oz/ac |
C |
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LSD (P=0.05) |
0.5 |
6.4 |
3.6 |
0.9 |
0 |
6.5 |
3.38 |
41 |
58 |
24 |
0 |
66 |
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Goal Tender |
2 |
fl oz/ac |
E |
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Broclean |
4 |
fl oz/ac |
D |
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Goal Tender |
2 |
fl oz/ac |
F |
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Goal Tender |
2 |
fl oz/ac |
D |
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6 |
Dacthal |
10 |
lb/ac |
A |
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Broclean |
4 |
fl oz/ac |
E |
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Table 6.
Sedona onion yield results. |
7 |
Nortron |
32 |
fl oz/ac |
A |
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Goal Tender |
2 |
fl oz/ac |
E |
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Trt |
------------Onion Bulb Counts in 6 row
feet------------ |
----------------------------CWT/A--------------------------- |
8 |
Nortron |
64 |
fl oz/ac |
A |
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No. |
<1" |
1-2.25" |
2.25-3" |
3-4" |
>4" |
Total |
<1" |
1-2.25" |
2.25-3" |
3-4" |
>4" |
Total |
9 |
Buctril |
2 |
fl oz/ac |
B |
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Oakes Irrigation Research Site |
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Buctril |
2 |
fl oz/ac |
C |
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Variety trials |
Crop index |
Home page |
Report 2014 |
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1 |
0.2a |
6.8cd |
12.0a |
7.4ab |
0.0a |
27.0a |
1.21a |
44bc |
215a |
258ab |
0a |
524a-d |
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Buctril |
2 |
fl oz/ac |
D |
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2 |
0.3a |
15.8ab |
13.5a |
1.0c |
0.0a |
31.0a |
2.42a |
107a |
208a |
21c |
0a |
353cde |
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Goal Tender |
2 |
fl oz/ac |
D |
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3 |
0.1a |
7.0cd |
12.3a |
10.1a |
0.1a |
30.0a |
1.21a |
41bc |
229a |
317a |
15a |
609ab |
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Buctril |
2 |
fl oz/ac |
E |
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4 |
0.7a |
14.3abc |
9.8a |
2.4bc |
0.0a |
27.8a |
3.63a |
82abc |
172a |
69bc |
0a |
341cde |
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Goal Tender |
2 |
fl oz/ac |
E |
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5 |
0.1a |
7.8cd |
13.5a |
2.6bc |
0.0a |
25.0a |
1.21a |
57abc |
217a |
69bc |
0a |
378b-e |
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6 |
0.0a |
4.0d |
13.0a |
9.7a |
0.0a |
26.8a |
0.00a |
33c |
246a |
332a |
0a |
611ab |
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7 |
0.1a |
10.8a-d |
17.3a |
2.8bc |
0.0a |
31.5a |
1.21a |
84abc |
306a |
74bc |
0a |
488a-d |
Table 3. Stand counts, weed control and injury
ratings. |
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8 |
0.0a |
4.5d |
13.8a |
9.7a |
0.1a |
28.5a |
0.00a |
35bc |
243a |
323a |
13a |
623a |
Stand Counts |
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9 |
0.4a |
17.5a |
11.5a |
0.4c |
0.0a |
30.3a |
2.42a |
113a |
180a |
5c |
0a |
310de |
29 DAA1-A2, 13 DAA-B2, 6 DAA-C2 in 3 row feet. |
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Weed Control and Injury 38 DAA-A. |
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10 |
0.1a |
3.3d |
12.0a |
7.6ab |
0.0a |
23.3a |
1.21a |
39bc |
223a |
235ab |
0a |
515a-d |
Trt |
-----------------Variety------------------ |
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-----% Control----- |
% |
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11 |
0.1a |
6.3d |
11.8a |
8.1ab |
0.1a |
27.0a |
1.21a |
50bc |
225a |
272ab |
17a |
570abc |
No. |
Crockett |
Sedona |
Patterson |
Talon |
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Colq3 |
Pigw4 |
Injury |
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12 |
0.7a |
16.3ab |
5.8a |
0.4c |
0.0a |
23.5a |
3.63a |
97ab |
86a |
9c |
0a |
201e |
1 |
12.8a |
12.8a |
9.3a |
7.8a |
|
93.3a |
100.0a |
7.5ab |
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13 |
0.3a |
9.8bcd |
12.3a |
6.1ab |
0.1a |
29.0a |
2.42a |
71abc |
218a |
193ab |
13a |
508a-d |
2 |
12.3a |
10.5a |
12.0a |
11.0a |
|
70.0a |
81.3ab |
1.3c |
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14 |
0.4a |
8.8cd |
9.8a |
5.4ab |
0.1a |
25.3a |
2.42a |
58abc |
177a |
169ab |
15a |
434a-d |
3 |
11.5a |
12.5a |
9.8a |
9.0a |
|
86.7a |
100.0a |
8.8a |
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15 |
0.1a |
6.3d |
14.5a |
5.8ab |
0.0a |
27.0a |
1.21a |
46bc |
267a |
181ab |
0a |
502a-d |
4 |
10.3a |
10.3a |
10.8a |
8.0a |
|
85.0a |
98.8a |
3.8abc |
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16 |
0.1a |
4.0d |
10.3a |
12.2a |
0.1a |
27.0a |
1.21a |
36bc |
199a |
416a |
15a |
667a |
5 |
12.0a |
9.5a |
8.8a |
9.8a |
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81.7a |
100.0a |
6.3ab |
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6 |
12.8a |
8.3a |
10.8a |
8.3a |
|
80.0a |
62.5b |
0.0c |
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LSD (P=0.05) |
0.5 |
4.9 |
5.0 |
7.9 |
0.2 |
6.2 |
3.45 |
36 |
92 |
90 |
25 |
143 |
7 |
10.5a |
13.3a |
10.8a |
9.5a |
|
11.7b |
100.0a |
0.0c |
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8 |
12.0a |
12.3a |
12.0a |
11.0a |
|
38.3b |
98.8a |
0.0c |
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Table 7.
Talon onion yield results. |
9 |
11.5a |
10.8a |
11.0a |
9.3a |
|
80.0a |
100.0a |
7.5ab |
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Trt |
------------Onion Bulb Counts in 6 row
feet------------ |
----------------------------CWT/A--------------------------- |
10 |
10.5a |
7.8a |
9.5a |
9.0a |
|
95.0a |
100.0a |
6.3ab |
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No. |
<1" |
1-2.25" |
2.25-3" |
3-4" |
>4" |
Total |
<1" |
1-2.25" |
2.25-3" |
3-4" |
>4" |
Total |
11 |
8.0a |
8.5a |
10.8a |
9.3a |
|
90.0a |
98.8a |
2.5bc |
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12 |
7.8a |
10.3a |
10.8a |
7.5a |
|
0.0c |
0.0c |
0.0c |
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1 |
0.0a |
5.0a |
9.0a |
5.8a-d |
0.1a |
20.0ab |
0.00a |
36a |
153a |
186a-d |
17a |
392abc |
13 |
13.8a |
10.8a |
11.8a |
9.5a |
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86.7a |
100.0a |
6.3ab |
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2 |
0.0a |
10.5a |
5.7a |
2.5bcd |
0.0a |
18.8ab |
0.00a |
62a |
88a |
81bcd |
0a |
231cd |
14 |
9.8a |
10.3a |
9.8a |
7.3a |
|
86.7a |
100.0a |
5.0abc |
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3 |
0.0a |
5.8a |
10.1a |
5.8a-d |
0.1a |
22.3ab |
0.00a |
34a |
173a |
172a-d |
18a |
397abc |
15 |
12.3a |
13.8a |
11.8a |
9.3a |
|
15.0c |
100.0a |
0.0c |
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4 |
0.0a |
10.5a |
6.7a |
2.8a-d |
0.0a |
20.8ab |
0.00a |
61a |
113a |
82bcd |
0a |
255bcd |
16 |
9.3a |
11.5a |
10.5a |
9.5a |
|
95.0a |
100.0a |
6.3ab |
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5 |
0.0a |
7.0a |
8.2a |
4.8a-d |
0.0a |
20.0ab |
0.00a |
50a |
130a |
137a-d |
0a |
316a-d |
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6 |
0.0a |
7.8a |
7.7a |
6.5abc |
0.1a |
22.3ab |
0.00a |
47a |
125a |
221abc |
15a |
408abc |
LSD (P=0.05) |
4.0 |
4.0 |
3.3 |
3.7 |
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17.0 |
20.9 |
3.1 |
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7 |
0.0a |
12.0a |
6.8a |
3.8a-d |
0.0a |
23.3ab |
0.00a |
64a |
130a |
115a-d |
0a |
309a-d |
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8 |
0.0a |
6.8a |
10.5a |
5.3a-d |
0.1a |
23.3ab |
0.00a |
42a |
176a |
185a-d |
16a |
419abc |
1DAA = Days after application. |
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9 |
0.0a |
9.5a |
13.4a |
3.0a-d |
0.0a |
26.0a |
0.00a |
59a |
215a |
88bcd |
0a |
363abc |
2Time from table 1. |
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10 |
0.3a |
7.0a |
9.1a |
7.3ab |
0.1a |
24.0a |
1.21a |
51a |
146a |
237ab |
15a |
450ab |
3Colq = Common Lambsquarters. |
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11 |
0.0a |
8.8a |
9.4a |
7.8a |
0.0a |
26.0a |
0.00a |
54a |
166a |
263a |
0a |
483a |
4Pigw = Redroot pigweed. |
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12 |
0.3a |
6.8a |
4.1a |
1.3d |
0.0a |
12.5b |
1.21a |
36a |
68a |
42d |
0a |
148d |
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13 |
0.0a |
7.8a |
8.7a |
6.3a-d |
0.0a |
23.0ab |
0.00a |
52a |
151a |
209a-d |
0a |
413abc |
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14 |
0.0a |
7.8a |
7.9a |
5.5a-d |
0.1a |
21.5ab |
0.00a |
48a |
131a |
197a-d |
15a |
391abc |
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15 |
0.5a |
8.5a |
6.3a |
2.0cd |
0.0a |
17.5ab |
2.42a |
53a |
108a |
59cd |
0a |
223cd |
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16 |
0.3a |
5.0a |
7.0a |
7.3ab |
0.1a |
20.0ab |
1.21a |
35a |
121a |
236ab |
12a |
405abc |
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RESULTS |
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LSD (P=0.05) |
0.4 |
4.4 |
7.8 |
3.0 |
0.3 |
6.5 |
1.77 |
28 |
77 |
98 |
30 |
126 |
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The pre-applications of DCPA and ethofumesate didn't injure onion (37
DAA), while the post-applications all had some injury after the third
application. Micro-rate treatments
without oxyfluorfen at this time had less injury and bromoxynil at 0.031
lb/acre had less injury then 0.062 lb/acre.
The Buctril treatments had less injury than the Broclean treatments. When comparing treatment 2 (Buctril) versus
treatment 13 (Broclean), treatment 4 (Buctril) vs treatment 14 (Broclean),
treatment 7 (Buctril) vs treatment 15 (Broclean) and treatment 10 (Buctril)
vs treatment 16 (Broclean); the biggest difference in injury was shown
between treatments 2 and 13. Both
received 0.031 lb/ acre bromoxynil for 2 applications, fb 0.0625 lb/acre with
6.3% onion injury for Broclean and only 1.3% onion injury for Buctril. DCPA controlled COLQ better than
ethofumesate, while ethofumesate had better control of RRPW than DCPA 37
DAA. Stand counts were taken 40 DAP,
just prior to the third application.
No differences were observed. |
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Sedona onions had the highest yield among the four cultivars fb
Crockett, Talon, and Patterson. Even
though there was more onion injury in the Broclean treatments, these
treatments had a higher yield overall than the Buctril treatments. The highest yielding treatment over all
four cultivars was treatment 16 with Sedona onions at 666 cwt/acre. This treatment consisted of bromoxynil
(Broclean) at 0.0625 lb/acre applied twice fb bromoxynil (Broclean) at 0.0625
lb/acre and oxyfluorfen at 0.0625 lb/acre applied twice. This treatment resulted in a top seven
yield among the four cultivars of onion.
In comparison, the Buctril treatment 10 ranked in the middle among all
treatments for total onion yield averaged over all cultivars. The most consistent treatment was treatment
6; pre-application of DCPA and two additional applications of the grower
standard use rate of bromoxynil and oxyfluorfen at the 5- and 9-leaf
stages. The untreated consistently
yielded at the bottom even though it received the two standard bromoxynil and
oxyfluorfen applications at the 5- and 9-leaf stages, because the weeds were
too big to fully control. |
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Having oxyfluorfen mixed with bromoxynil in the first three
applications compared to only bromoxynil increased yields with all four
cultivars (treatments 3 vs 2). Comparing treatments 10 and 11, where an application
of bromoxynil at 0.0625 lb/acre was added for treatment 11, showed a yield
increase with all four cultivars.
Treatment 10 had 2 applications of bromoxynil at 0.0625 lb/ acre and 2
applications of bromoxynil at 0.0625 lb/acre plus oxyfluorfen at 0.0625
lb/acre. Treatment 11 added a third
application of bromoxynil at 0.0625 lb/acre in the middle fb 2 applications
of bromoxynil at 0.0625 lb/acre plus oxyfluorfen at 0.0625 lb/acre. |
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Oakes Irrigation
Research Site |
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Variety trials |
Crop index |
Home page |
Report 2014 |
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