Objective:
To evaluate pea cultivars for yield and agronomic performance in Northwestern Montana.
Results:
A significant difference was observed for yellow pea yield. Mean yield was 89.8 bu/A, and ranged from 58.1 bu/A for PSO826MT492 to 114.1 bu/A for Nette 2010 (Table 2). Statistical difference was observed for flowering, with an average occurrence at 175 Julian days (June 23). Significant differences in height averaged 24.6 inches at 50% flowering, 36.1 inches at pod fill, and 38.4 inches at physiological maturity. Statistical differences were observed for test weights with an average of 64.1 lb/bu. Thousand kernel weights were significant with an average of 241.0 grams and ranged from 215.6 grams for AC Earlystar to 275.5 grams for Navarro. Protein averaged 21.71 percent with Salamanca being highest at 23.40 percent.
No significant difference was observed for green pea yield, which averaged 78.1 bu/A (Table 3). Days to flowering was significant with an average of 175 Julian days (June 23). Average heights were 22.5 inches at flowering, 35.4 inches at pod fill, and 37.1 inches at physiological maturity. Test weights averaged 63.4 lb/bu. Thousand kernel weights averaged 222.8 grams and ranged from 201.1 grams for PSO826MT492 to 235.2 grams for Majoret. Protein averaged 21.74 percent with PSO826MT492 and Majoret having the highest at 23.20 percent.
Summary:
Pea yields on average were much higher from last year by more than 50 bu/A for green peas and more than 70 bu/A for yellow peas. The nursery was planted under rainfed condition and received adequate moisture, as opposed to last year’s drought.
Table 1. Materials and Methods |
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|---|---|---|---|
| Seeding Date: | 4/22/2016 | Harvest Date: | 7/22/2016 |
| Julian Date: | 113 | Julian Date: | 204 |
| Seeding Rate: | 8 plants/sqft | Soil Test: | 116-11-125 |
| Previous Crop: | Barley | Fertilizer: | 6-30-30 |
| Tillage: | Conventional | Herbicide: | Pursuit 2 oz/A + Basagran 16 oz/A |
| Irrigation: | None | Basagran 2 pt/A | |
| Soil Type: | Creston Silt Loam | Insecticide: | Warrior II 1.92 fl oz/A |
Table 2. Yellow pea agronomic data |
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|---|---|---|---|---|---|---|---|---|---|
| Cultivar | FLWR | HT FLWR | HT PF | HT PM | YLD | YLD | TWT | TKW | PRO |
| Julian | in | in | in | lb/A | bu/A | lb/bu | g | % | |
| Nette 2010 | 172 | 23.5 | 34.4 | 37.7 | 6844.4 | 114.1 | 65.8 | 249.7 | 20.90 |
| Agassiz | 178 | 25.7 | 40.3 | 44.8 | 6274.1 | 104.6 | 62.7 | 228.7 | 22.70 |
| Salamanca | 178 | 28.5 | 39.9 | 41.7 | 5953.4 | 99.2 | 64.1 | 254.1 | 23.40 |
| PSO877MT632 | 174 | 21.8 | 34.0 | 39.6 | 5709 | 95.2 | 63.6 | 234.4 | 23.00 |
| DS Admiral | 176 | 27.8 | 38.5 | 40.2 | 5699.4 | 95.0 | 64.0 | 240.9 | 21.90 |
| CDC Amarillo | 179 | 31.1 | 44.6 | 36.8 | 5622.7 | 93.7 | 64.6 | 220.7 | 21.80 |
| CDC Treasure | 175 | 28.2 | 37.7 | 41.2 | 5576.1 | 92.9 | 64.8 | 222.8 | 20.30 |
| Jet Set | 177 | 26.5 | 34.8 | 38.6 | 5570 | 92.8 | 64.7 | 247.4 | 21.20 |
| CDC Saffron | 178 | 28.2 | 34.0 | 35.2 | 5520.2 | 92.0 | 65.1 | 252.4 | 21.30 |
| AC Earlystar | 175 | 27.2 | 40.8 | 42.8 | 5297 | 88.3 | 64.1 | 215.6 | 19.90 |
| PSO826MT460 | 172 | 20.6 | 32.8 | 34.7 | 5285.7 | 88.1 | 63.1 | 250.4 | 22.10 |
| Universal Yellow | 172 | 21.3 | 33.9 | 34.9 | 5214.1 | 86.9 | 63.5 | 241.9 | 21.80 |
| Spider | 179 | 28.4 | 40.3 | 44.1 | 5203.7 | 86.7 | 63.7 | 241.0 | 22.90 |
| Bridger | 176 | 20.8 | 31.9 | 34.8 | 5200.8 | 86.7 | 64.7 | 222.3 | 21.90 |
| Delta | 173 | 19.9 | 31.0 | 34.1 | 5143.1 | 85.7 | 63.9 | 250.2 | 22.00 |
| Korando | 176 | 24.2 | 37.4 | 39.5 | 5053 | 84.2 | 64.1 | 262.1 | 22.30 |
| Navarro | 172 | 21.3 | 34.6 | 34.7 | 4363.9 | 72.8 | 64.5 | 275.5 | 22.30 |
| PSO826MT492 | 172 | 18.3 | 29.9 | 36.0 | 3488.4 | 58.1 | 63.4 | 228.8 | 19.10 |
| Mean | 175 | 24.6 | 36.2 | 38.4 | 5389.9 | 89.8 | 64.1 | 241.1 | 21.71 |
| CV | 0.7 | 9.3 | 7.4 | 11.1 | 10.8 | 10.8 | 1.0 | 3.0 | 3.09 |
| LSD | 1.7 | 3.3 | 3.8 | 6.1 | 828.0 | 13.8 | 0.9 | 10.1 | 0.95 |
| Pr>F | 0.0001 | 0.0001 | 0.0001 | 0.0038 | 0.0001 | 0.0001 | 0.0001 | 0.0001 | 0.0001 |
| FLWR: 50% flowering, HT FLWR: height at flowering, HT PF: height at pod fill, HT PM: height at physiological maturity, YLD: yield, TWT: test weight, TKW: thousand kernal weight, ns: nonsignificant. | |||||||||
Table 3. Green pea agronomic data |
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|---|---|---|---|---|---|---|---|---|---|
| Cultivar | FLWR | HT FLWR | HT PF | HT PM | YLD | YLD | TWT | TKW | PRO |
| Julian | in | in | in | lb/A | bu/A | lb/bu | g | % | |
| Greenwood | 173 | 21.4 | 33.0 | 33.5 | 5127.9 | 85.5 | 64.5 | 215.0 | 19.2 |
| PSO877MT499 | 179 | 21.9 | 31.6 | 33.6 | 5083.2 | 84.7 | 62.7 | 225.8 | 23.2 |
| Hampton | 178 | 26.6 | 35.6 | 36.1 | 5024.0 | 83.8 | 64.0 | 234.9 | 22.5 |
| Majoret | 172 | 22.7 | 36.7 | 43.6 | 4952.1 | 82.5 | 62.6 | 235.2 | 23.2 |
| PSO877MT457 | 176 | 27.1 | 44.5 | 42.9 | 4763.9 | 79.4 | 63.9 | 218.5 | 21.6 |
| Cruiser | 174 | 21.3 | 35.0 | 35.1 | 4736.7 | 78.9 | 63.4 | 221.0 | 21.8 |
| PSO826MT190 | 177 | 22.9 | 35.8 | 42.5 | 4540.4 | 75.7 | 62.6 | 201.1 | 22.0 |
| Aragon | 173 | 18.5 | 34.7 | 34.2 | 4403.7 | 73.4 | 63.3 | 224.2 | 21.3 |
| PSO877MT076 | 172 | 20.1 | 31.2 | 32.3 | 3557.3 | 59.3 | 63.7 | 229.6 | 20.9 |
| Mean | 175 | 22.5 | 35.3 | 37.1 | 4687.7 | 78.1 | 63.4 | 222.8 | 21.74 |
| CV | 0.6 | 8.6 | 8.5 | 13.1 | 13.7 | 13.7 | 0.8 | 2.7 | 2.02 |
| LSD | 1.6 | 2.9 | 4.5 | 7.1 | ns | ns | 0.8 | 9 | 0.65 |
| Pr>F | 0.0001 | 0.0001 | 0.0002 | 0.0096 | 0.0595 | 0.0598 | 0.0002 | 0.0001 | 0.0001 |
| FLWR: 50% flowering, HT FLWR: height at flowering, HT PF: height at pod fill, HT PM: height at physiological maturity, YLD: yield, TWT: test weight, TKW: thousand kernal weight, ns: nonsignificant. | |||||||||