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

PUMPKIN VARIETY PERFORMANCE TRIAL, 2000

Richard Greenland, Leonard Besemann, and Heidi Eslinger

Result summary

Table 38. Pumpkin emergence and yields

Table 39. Pumpkin fruit characteristics

Pumpkins grow well in North Dakota. Early maturing pumpkins are usually best, but later maturing ones do well in some years.

MATERIALS AND METHODS

Soil: Egeland loam; pH=7.3; 2.1% organic matter; soil-P and soil-K were very high; soil-S was medium.
Previous crops: 1999 - edible bean; 1998 - onion and lettuce; 1997 - carrot.
Seedbed preparation: Disked on 29 October 1999. Multiweeded (field cultivated) three times; once on April 5 and twice on May 16 to incorporate fertilizer and smooth seedbed.
Planting: Seeds planted 1 ft apart in rows 9.5 ft apart on May 17. Thinned on June 19 to an in-row spacing of one plant every 3 ft.
Fertilizer: On April 4, broadcast 18 lbs N/acre and 20 lbs S/acre as 21-0-0-24. Applied 40 lbs N/acre as 28-0-0 on May 16. Fertigated 50 lbs N/acre as 28-0-0 on July 13.
Pest control: Controlled weeds with rototilling and hand weeding. Sprayed Asana (8 oz/acre on June 22, June 30, July 6, July 14, July 20, and July 27), Pounce (4 oz/acre on Aug 2), and Sevin (1 qt/acre on Aug 9) to control cucumber beetles.
Plots: Plots were 20 ft long by 8 ft (one row) wide.
Irrigation: Overhead sprinkler irrigation as needed.
Harvest: Hand harvested September 25 and 26.

RESULTS

Hybrid Pam, Racer, and Rocket were the best pumpkins this year, both in yield and quality. Trojan and the ProGold varieties were more susceptible to angular leaf spot lesions on the fruit than were the other pumpkins.

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Table 38. Pumpkin emergence and yields for the Oakes Irrigation Research Site 2000 pumpkin performance trial.
Name Seed source1 Plants emerged2 Mature Green3 % with disease4
number yield number yield
plants/plot fruit/A tons/A fruit/A tons/A %
Hybrid Pam SW 12.3 abc5 5770 b 16.6 d 320 bcd 0.4 cd 9 a
ProGold 100 AC 5.8 d 6890 a 8.0 e 0 d 0.0 d 33 bc
ProGold 200 AC 10.3 bc 2240 de 22.2 c 880 b 5.5 bcd 56 d
ProGold 500 AC 9.8 bc 3040 d 27.3 b 800 bc 6.7 b 30 bc
ProGold 510 AC 12.8 ab 2640 de 27.4 b 880 b 7.2 ab 35 bc
Racer JS 12.0 abc 4320 c 26.0 bc 80 cd 0.3 cd 18 ab
Rocket JS 10.5 abc 5280 bc 33.7 a 720 bcd 4.0 bcd 20 ab
Tom Fox JS 9.5 c 2480 de 15.9 d 2240 a 13.2 a 17 ab
Trojan SW 13.5 a 1920 e 26.9 b 800 bc 6.2 bc 46 cd
CV (%) 20 20 14 67 86 46
Probability 0.0011 0.0001 0.0001 0.0001 0.003 0.0009

1See Appendix A for seed source codes.

2Number of plants per 17 ft plot on June 9. Later thinned to one plant every three feet.

3Green - pumpkins that were immature at harvest time.

4Percent of mature fruit that had disease lesions from angular leaf spot.

5Values in the same column followed by the same letter are not significantly different (0.05 level).

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Table 39. Pumpkin fruit characteristics for the Oakes Irrigation Research Site 2000 pumpkin performance trial.
Name Seed source1 Fruit size Handle (stem)2 Fruit color3 Fruit shape4 Uniformity Overall score
lbs/fruit ------------ 1 to 5 ------------- 1 to 3 1 to 10
Hybrid Pam SW 5.8 d 4.1 a 3.8 a 2.8 c 2.1 a 7.4 a
ProGold 100 AC 2.3 d 2.9 de 3.1 c 3.1 c 2.0 ab 6.9 ab
ProGold 200 AC 21.6 b 3.1 cd 3.3 bc 4.0 ab 1.5 c 5.8 bc
ProGold 500 AC 19.4 b 2.5 e 3.4 abc 4.3 a 1.6 bc 6.5 ab
ProGold 510 AC 21.5 b 3.1 cd 3.1 c 4.0 ab 1.5 c 6.4 ab
Racer JS 12.5 c 4.1 a 3.8 a 3.1 c 2.0 ab 7.1 a
Rocket JS 13.1 c 3.5 bc 3.3 bc 4.1 a 1.6 bc 6.6 ab
Tom Fox JS 12.6 c 3.8 ab 3.6 ab 3.6 b 1.6 bc 6.5 ab
Trojan SW 32.9 a 3.6 abc 3.5 abc 4.3 a 1.4 c 4.8 c
CV (%) 25 12 9 8 18 12
Probability 0.0001 0.0001 0.03 0.0001 0.02 0.003

1See Appendix A for seed source codes.

2Handle (or stem) - 1 to 5; the longer and thicker the handle in relation to the size of the pumpkin, the higher the score.

3Color - 2 = light orange, 3 = medium orange, 4 = dark orange, 5 = red orange.

4Shape - 1 = short, 2 = medium short, 3 = round, 4 = medium tall, 5 = tall.

5Values in the same column followed by the same letter are not significantly different (0.05 level).

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