growing pumpkins - university of missouriextension.missouri.edu/nodaway/documents/growing... ·...
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Tom Fowler
MU Extension Horticulture Specialist
Buchanan County Extension office
St Joseph, MO
Growing Pumpkins
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Why Grow Pumpkins??
Relaxing/enjoyment
Lower labor requirements (95 hr acre
vs. tomato 960 hrs)
Family project
Potential to direct market
Fairly easy to grow?
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Getting started growing pumpkins:
Soil- good drainage/no standing
water after a heavy rain
pH- 6-6.8 ideal
Soil test for phosphate and potassium
No perennial weed problems
Long rotation 3-4 years
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Varieties to grow & examples:
Miniature (1 lb <) Jack Be Little
Baby – Small size (1-7 lb) Baby Bear, Pie Pumpkins
Medium- Jack-o’lantern (7-20) Connecticut field Magician(PM)
Medium-large and large (20+) Howden, Howden Biggie, Aladdin (PM), Magic Lantern (PM), Gold Rush, Pro Gold 510, Camaro (PM) Warlock (PM)
Very large- giant Atlantic Giant, Prize Winner, Big Max etc
Specialty – Buckskin, Cinderella, Casper, Peanut
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Good Characteristics:
Vigorous , healthy vines
Disease tolerance
Good fruit-set
Nice, uniform color
Good handle
Good storage
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When to seed pumpkins?
Most pumpkins reach maturity in 3-3 ½ months
Have them ready by late September through October
although they are showing up earlier in the market
Seeding from around May 20-June20
Can also grow seedlings and set plants in the field,
this will give you a 4-5 week start
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Healthy transplants should have
white roots.
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Spacing:
Bush Semi Bush Types: 18-24” apart within the row and rows 4-6’ apart
Vining types 2-5’ apart within the row and rows 4- 10’ apart
Match spacing with the type of vine pumpkin is important to make sure there is no bare soil where weeds can develop. It is important to know the vine type.
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Irrigation?
Pumpkins are 90% water and will respond to irrigation.
They are naturally deep rooted and can take drought stress.
Drought stress at flowering and early fruit set can reduce yields.
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Fertilization:
Nitrogen: 50- 100 lbs per acre with half
as a pre-plant application and half at the
time the vines begin to run. Soil >3%
organic matter and following a legume a
side dress is not needed.
Phosphorus and Potassium applied based
on soil test..
pH: 6-6.8 ideal 5.5-7.5 they will grow in
this range
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Weed Management:
Cultivation- hand-hoe, tiller, disc, rotary hoe,
cultivator prior to vines running. Cultivate lightly
to conserve moisture and avoid root damage.
Plastic
No-till an option
Herbicides pre-plant pre-emerge broadleaf and
grass control , after planting pre-emerge, post
emerge grass control.
A combination of cultivation and herbicides works
well.
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Insects:
Squash Bug
Cucumber Beetle
Squash Vine Borer
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Cucumber Beetle- Spotted and Striped
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Disease:
Powdery Mildew
Downy Mildew
Black rot and other fruit rots
Virus
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Powdery Mildew
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Harvest:
The rind or skin has toughened and the stems
have lost their succulence
Cut fruit from vine with pruners
Small pumpkins can yield 2,000-4,000 fruit/per
acre (10-20 tons acre)
Medium-Large pumpkins can yield 1500-2000
fruit/acre (15-20 tons/acre)
A light freeze is not damaging
Can store for a month or more
Most harvest and marketed
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Other complimentary crops/items:
Gourds
Squash
Chrysanthemums
Straw
Corn shocks
Honey
Etc
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Great Plains Growers Conference
January 12th – 14th , 2017
MWSU Campus St Joseph, MO
greatplainsgrowersconference.org
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Information: Missouri Alternatives Center-
http://agebb.missouri.edu/mac/links/
Midwest Vegetable Production Guide for
Commercial Growers 2016-
https://ag.purdue.edu/btny/midwest-
vegetable-guide/Pages/default.aspx
North Missouri Produce Auction LLC-
http://agebb.missouri.edu/hort/auction/nomo.htm
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Thanks, Questions/Comments?