Pumpkin Variety PerformanceLiz Maynard and Erin BluhmDepartment of Horticulture and Landscape Architecture

Jan. 4, 2018Illiana Vegetable Growers SymposiumSchererville, Indiana

Where : Pinney Purdue Ag. Center Wanatah, IN

When : May 31 – September 13, 2017

Tracy Sandy Loam soil2 replications2 Powdery Mildew Treatments :

Treated (quinoxyfen and myclobutanil)Not Treated

16 varieties : 14 jack-o-lantern1 small, pie 1 specialty

Fertilizers : 40 lbs./A N total from urea preplant on April 1260 lbs./A N total from UAN sidedress on June 20

(no P or K based on Fall 2016 soil testing)

PPAC Weather Summary

May 29 - Sept 10

Average temp : 68.8˚FTemp differential : -1.3˚F

Precipitation : 10.75 inchesPrecip. differential : -3.18 inches

Growing Degree Days : 2005GDD differential : -88

(Source: USDA NASS 2017 Indiana Crop Progress and Condition report)

Seeded on May 317.5 ft. between rows in plot, 15 ft. between plots. 3 ft. spacing in row. 1290/A

First emergence count June 8, Filled in with transplants June 16Overhead irrigation run once on June 14 (applied ½”)Insects controlled using permethrin (Arctic®)Weeds controlled with Strategy®, Curbit®, hand weeding and cultivationHarvested September 11 – 13PM Trt: Quintec® (quinoxyfen) 6 oz./A July 14, August 11

Rally® (myclobutanil) at 4 oz./A July 27, August 25All Plots: Mankocide® (copper hydroxide) 3 lb./A July 27 and Aug. 25; Bravo Weather Stik® (chlorothalonil) 2 pints /A and Previcur Flex® (propamocarb) 1.2 pints/A Aug. 11, and Tanos® (famoxadone and cymoxanil) 8 oz./A Aug. 25.

Data CollectionPowdery Mildew Ratings

• Aug 21-23, Aug 31-Sept 1, and Sept 7-8• Two young, mid-aged, and old leaves per plot• Upper, lower, and petiole ratings taken per leaf• Overall plot ratings for powdery mildew• Vine Vigor rating

Fruit Characteristics rated on September 14• Color, shape, and suture depth• Width and length of peduncle• Size Uniformity and Overall Quality rated from 1 (low) to

9 (high)

HulkPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

30.0 29.5 L, L-M, M O M, M-D 7.0 397Largest, thick stems, oblong fruit, but late to mature, lower percent marketable fruit

HulkPM Treatment No PM Treatment Yes

Cargo PMRPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

25.4 35.9 D R, R-O D 8.2 52Late to mature, high total yield, long stems, dark orange, good quality fruit

Cargo PMRPM Treatment No PM Treatment Yes

Solid GoldPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

23.6 26.8 L, L-M S, R, R-O S, S-M 7.0 316

Bright, light to medium orange pumpkins with relatively long stems

Solid GoldPM Treatment No PM Treatment Yes

KratosPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

22.8 31.4 M, M-D, D R, R-O M, D 8.4 165Very vigorous vines and a high percentage of marketable fruit

KratosPM Treatment No PM Treatment Yes

JPN 62005RPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

22.5 28.0 M, M-D R M 6.5 63

Best resistance to powdery mildew in this size group

JPN 62005RPM Treatment No PM Treatment Yes

Bayhorse GoldPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

20.4 32.6 M, D R-O, O M, S-D 7.8 168High percentage of marketable fruit, earlier than most others in this size range, 2nd highest orange lb/plant

PM Treatment No PM Treatment Yes

Bayhorse Gold

Eagle City GoldPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

20.3 34.9 L, L-M, M R-O S 7.3 256

2nd in marketable yield for this size group, light to medium orange pumpkins with shallow sutures

Eagle CityGold

Eagle City GoldPM Treatment No PM Treatment Yes

ZeusPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

17.8 23.0 M, M-D R, R-O S, M, D 7.5 51Vigorous vines, but very late to mature, lowest yield in this size class (16-18 lb.)

ZeusPM Treatment No PM Treatment Yes

Cider JackPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

17.6 26.5 M, D R S-M, M-D 3.7 281Least vigorous vines; yield in the middle for this size group (16- 18 lb.)

Cider JackPM Treatment No PM Treatment Yes

JPN 14-4090PM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

17.3 39.7 M-D, D R D 7.9 77Vigorous vines, high yield, a high percentage of marketable fruit.

JPN 14-4090PM Treatment No PM Treatment Yes

Cracker JackPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

16.8 27.3 M, D R M, D 7.8 155High percentage of marketable fruit but later in maturity than most.

CrackerJack

Cracker JackPM Treatment YesPM Treatment No

Jack StrawPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

14.5 29.4 L, M R-O M, S-D 5.6 116

High percentage marketable fruit; somewhat later in maturity (12 -15 lb.)

Jack StrawPM Treatment No PM Treatment Yes

SkidooPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

14.3 33.4 M, D R, V S-M, M 7.3 49More vigorous vines than Jack Straw and slightly earlier in maturity

SkidooPM Treatment No PM Treatment Yes

JPN 62009PM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

12.4 22.1 M, M-D R-O M, M-D 7.3 16Smaller fruit and much later in maturity than other 2 in size group (12 -15 lb.)

JPN 62009PM Treatment No PM Treatment Yes

Owl’s EyePM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

5.9 25.5 YEL/CR S, S-R, R S, S-M, M 5.8 256Attractive, squat, fruit starts out cream-colored and then turns yellow. Cream-colored fruit is attractive; late maturity may not be a problem if fruit can be marketed before it turns yellow.

Owl’s EyePM Treatment No PM Treatment Yes

Jack SpratPM Treatment No PM Treatment Yes

Lb./fruitOrange

Lb./plantOrange & Turning

Color Shape Suture Depth

Vine Vigor

PM Severity

2.7 15.9 M S, R-S, R-O S 7.3 20Very good resistance to powdery mildew, vigorous vines, early maturity, and produced 2-3 lb. fruit with shallow sutures

Jack SpratPM Treatment No PM Treatment Yes

JPN62005R

CiderJack

Skidoo Jack Sprat

BayhorseGold

JPN14-4090

CrackerJack

Hulk

Owl’s Eye

Kratos JackStraw

Eagle CityGold

Zeus JPN62009

CargoPMR

SolidGold

Acknowledgments

J. Leuck and Pinney-Purdue Ag Center staff managed field operations. S. Musgrave, O. Rippe, and J. Smiddyassisted with fieldwork. Seed companies Rupp, High Mowing Seeds, HM Clause, Johnny’s Selected Seeds, and Sakata Seeds for provided financial support and/or seed.

Powdery Mildew Treatment

Vine Vigor

PMSeverity

Lbs./Plant Orange

No./PlantAll Fruit

Lbs./Plant All Fruit

No 6.7 384 15.7 2.20 29.2Yes 7.3 28 20.2 2.68 36.2Significance (P<0.05) * * * *Percent Increase with Treatment 29% 22% 24%

Powdery Mildew Treatment Effects