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.

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 Soil Type: Creston Silt Loam
Irrigation: None Insecticide: Warrior II 1.92 fl oz/A
Herbicide: Pursuit 2 oz/A + Basagran 16 oz/A
Basagran 2 pt/A

Table 2. Yellow Pea Agronomic Data - 2016.

Cultivar FLWR
Julian
HT FLWR
in.
HT PF
in.
HT PM
in.
YLD
lb/A
YLD
bu/A
TWT
lb/bu
TKW
g
PRO
%
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 5709.0 95.2 63.6 234.4 23.00
DS Admiral 176 27.8 38.5 40.2 5699.4 95.0 64.0 210.9 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 5570.0 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 5297.0 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 5053.0 84.2 64.1 262.1 22.30
Navarro 174 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 36.1 38.4 5389.9 89.8 64.1 241.0 21.71
CV 0.7 9.3 7.4 11.1 10.8 10.8 1.0 3.0 2.09
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

Table 3. Green Pea Agronomic Data - 2016.

Cultivar FLWR
Julian
HT FLWR
in.
HT PF
in.
HT PM
in.
YLD
lb/A
YLD
bu/A
TWT
lb/bu
TKW
g
PRO
%
Greenwood 173 21.4 33.0 33.5 5127.9 85.5 64.5 215.0 19.20
PSO887MT499 179 21.9 31.6 33.6 5083.2 84.7 62.7 225.8 23.20
Hampton 178 26.6 35.6 36.1 5024.0 83.8 64.0 234.9 22.50
Majoret 172 22.7 36.7 43.6 4952.1 82.5 62.6 235.2 23.20
PSO877MT457 176 27.1 44.5 42.9 4763.9 79.4 63.9 218.5 21.60
Cruiser 174 21.3 35.0 35.1 4736.7 78.9 63.4 221.0 21.80
PSO826MT190 177 22.9 35.8 42.5 4540.4 75.7 62.6 201.1 22.00
Aragon 173 18.5 34.7 34.2 4403.7 73.4 63.3 224.2 21.30
PSO877MT076 172 20.1 31.2 32.2 3557.3 59.3 63.7 229.6 20.90
Mean 175 22.5 35.4 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 0.65
Pr>F 0.0001 0.0001 0.0002 0.0096 0.0595 0.0598 0.0002 0.0001 0.0001

FLWR: 50% flower; HT FLWR: height at flowering; HT PF: height at pod fill; HT PM: height at physiological maturity; YLD: yield; TWT: test weight; TKW: thousand kernel weight; ns: non-significant