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Weed control in dry pea (2001)
Majoret peas were seeded April 26 into 6-inch rows at 180 lb/A in a
conventional tillage system. Individual plots were 10 x 30 ft and replicated
three times. Treatments were applied preplant incorporated (PPI) on April 26 and
postemergence (POST) on May 25.
| Treatmenta |
Rate |
Timing |
Jul 6
Injury |
Yield |
Tst wt. |
Crop density |
| |
|
|
% |
lb/A |
lb/bu |
pl/m |
| Raptor |
4 fl oz |
POST |
7 |
2332 |
64.2 |
|
| Prowl / Raptor |
3 pt / 4 fl oz |
PPI / POST |
4 |
2530 |
63.9 |
|
| Raptor + Basagran |
4 fl oz + 0.5 pt |
POST |
2 |
2739 |
64.0 |
|
| Spartan / Poast |
2.67 oz / 1 pt |
PPI / POST |
0 |
2175 |
63.8 |
9.5 |
| Spartan / Poast |
4 oz / 1 pt |
PPI / POST |
2 |
2394 |
63.3 |
11.8 |
| Spartan / Poast |
5.33 oz / 1 pt |
PPI / POST |
1 |
2487 |
63.7 |
9.6 |
| Sonalan + Sencor |
2 pt + 0.25 lb |
PPI |
0 |
2629 |
63.8 |
|
| Basagran + Poast |
2 pt + 1 pt |
POST |
3 |
2379 |
63.5 |
|
| Sonalan + Spartan |
2 pt + 2.67 oz |
PPI |
1 |
2641 |
63.6 |
|
| Treflan / Poast |
2 pt / 1 pt |
PPI / POST |
0 |
2255 |
63.9 |
|
| Untreated |
|
|
0 |
1930 |
63.3 |
8.9 |
| LSD |
|
|
3 |
NS |
NS |
NS |
| CV |
|
|
97 |
20 |
1 |
13 |
a Raptor treatments were applied with NIS at 0.25%
v/v. Poast treatments were applied with COC at 1 pt/A, Raptor + Basagran applied with 28% N at 1 qt/A.
Raptor caused yellowing and slight stunting within three days after
application, but by mid-season, the crop had generally recovered. Spartan caused
very little visible crop injury and did not reduce crop stand. Herbicide
treatments increased pea yields 250-800 lb/A. The study area had an erratic
population of foxtail, wild buckwheat, pigweed, and Russian thistle.
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