Oakes Irrigation Research
Site
Carrington Research Extension Center * North Dakota State University
P.O. Box 531, Oakes, ND 58474-0531, Voice: (701) 742-2189, FAX: (701)
742-2700, email: rgreenla@ndsuext.nodak.edu
GARDEN PEA HYBRID PRELIMINARY TRIAL, 1999
Richard Greenland, Leonard Besemann, and Heidi Eslinger
Table 67. Yield, plant height, and pod characteristics of peas.
Green peas grow well in cool climates, therefore they should grow well in North Dakota. In a small trial, we planted two processing varieties and one snow pea to evaluate how green peas grow here.
MATERIALS AND METHODS
| Soil: | Maddock sandy loam; pH=7.8; 2.3% organic matter; soil-P and soil-K were very high; soil-S was meduim. |
| Previous Crops: | 1998 - field corn; 1997 - oriental vegetable; 1996 - potato. |
| Seedbed Preparation: | Disked on 4 November 1998. Disked on April 12. Field cultivated twice to incorporate fertilizer and herbicide on April 12. |
| Fertilizer: | On April 7, broadcast 15 lbs N/acre and 75 lbs P2O5/acre as 10-50-0, 18 lbs N/acre and 20 lbs S/acre as 21-0-0-24, and 99 lbs K20/acre as 0-0-60. Sprayed 40 lbs and 70 lbs N/acre as 28-0-0 on April 12 and June 7, respectively. |
| Planting: | Drilled peas on April 19 with a grain drill. Spacing was about 6 seeds per foot in 12-inch rows. Seeds were placed 1½ to 2 inch deep into a flat, fine seedbed. |
| Plots: | Each plot was 6 ft wide by 17 ft long. |
| Irrigation: | Overhead sprinkler irrigation as needed. |
| Pest Control: | Weeds were controlled using Treflan (1 pt/acre applied preplant incorporated on April 12), Poast + Dash (1.5 pt/acre + 1 qt/50 gal on May 21) and by hand weeding. No insect control needed. |
| Harvest: | The plots were harvested three to four times each from June 24 to July 7. Harvest area was 6 feet wide by two feet long. |
We had some minor production problems. The stand seemed a little thin. The corn stubble interfered with planting and may have reduced the stand. The variety SP496-1-2-3 had higher yields than the other two varieties. All of the peas seemed to be good quality. There was a wide difference in maturity in each variety - some pods were too mature, some were just right, while others where just beginning to fill. How does the yield in these trials compare to commercial production in other areas? Knott's Handbook for Vegetable Growers, 4th edition, listed the average yield of unshelled, fresh-market green peas as 2 tons/acre and a good yield as 3 tons/acre. The yield we measured was pretty good compared to that standard. A good yield for snow pea was listed in Knott's Handbook as 4 tons/acre.
We did not have any disease or insect problems. However, problems may develop if large acreages are planted.
It appears from this preliminary trial that green peas have good production potential in North Dakota.
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Table 67. Yield, plant height, and pod characteristics of peas in the Oakes Irrigation Research Site 1999 green pea performance trial.
| Harvest date | Yield | Plant height† | Pod | Overall score | |||||
| marketable | total | length | width | size | color‡ | uniformity | |||
| tons/acre | inches | oz/pod | 1 to 4 | 1 to 5 | 1 to 10 | ||||
| Sugar Sprint¶ | |||||||||
| June 24 | 1.87 | 3.10 | 13.2 | 3.2 | 0.6 | 0.15 | 2.5 | 3.0 | 6.5 |
| June 28 | 3.52 | 5.13 | 3.1 | 0.5 | 0.17 | 2.5 | 3.1 | 6.8 | |
| July 1 | 3.93 | 6.58 | 3.1 | 0.6 | 0.19 | 2.5 | 3.0 | 6.4 | |
| SP496-1-2-3¶ | |||||||||
| June 29 | 2.14 | 4.12 | 12.6 | 3.3 | 0.6 | 0.18 | 2.0 | 3.4 | 7.4 |
| July 1 | 3.95 | 5.84 | 3.6 | 0.6 | 0.21 | 2.5 | 3.5 | 7.3 | |
| July 5 | 5.09 | 7.04 | 3.4 | 0.6 | 0.25 | 2.5 | 3.1 | 7.4 | |
| July 7 | 5.32 | 6.81 | 3.4 | 0.6 | 0.26 | 2.5 | 3.0 | 7.5 | |
| SP6¶ | |||||||||
| June 29 | 1.61 | 3.26 | 14.0 | 4.1 | 0.9 | 0.25 | 2.1 | 3.4 | 6.9 |
| July 1 | 2.74 | 5.28 | 4.1 | 0.9 | 0.26 | 2.5 | 3.4 | 7.1 | |
| July 5 | 3.04 | 6.43 | 4.1 | 0.8 | 0.28 | 2.3 | 3.0 | 6.0 | |
| July 7 | 3.34 | 6.60 | 4.0 | 0.9 | 0.31 | 3.0 | 2.5 | 6.4 | |
No statistics were done on these average values.
†Plant height was only measured on the first harvest date.
‡Pod outside color - 1 to 4, light to dark green.
¶All seed was donated by Rogers Seed.
We did not have a tenderometer (used to determine when peas are ready to harvest). We harvested every two to four days, recorded the yields, etc. and graded the peas as marketable or not marketable. The yields given are for unshelled peas. SP6 was a snow pea and would not have been shelled. The other two varieties would have been shelled in commercial production.
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Go to Oakes Irrigation Research Site Variety Performance Trials
Go to Oakes Irrigation Research Site 1999 annual report