Pumpkin yield and size when grown on four plastic mulches as a second crop

James M. White


Sixteen pumpkin cultivars (Cucurbita pepo L.) were grown in a plastic mulch, drip irrigation system as a second crop following spring watermelons using four plastic mulch colors (white-on-black, blue, NOR blue, and black). Plots were 50 feet long on raised beds, 9 feet on center, with four replications in a randomized complete block design. Seeds were planted 17 Aug. and fruit harvested 13 Nov. 2001. Five classes or types of pumpkins (miniature, speciality, pie, medium Jack-O-Lantern, and large Jack-O-Lantern) were evaluated for yield, size, stem length, and response to the 4 colors of plastic. Yield as pounds/acre ranged from 22,130 to 3,637 with the pie and miniature classes being the lowest. As expected, the large Jack-O-Lantern classes were larger and heavier, ranging from 8.5 to 5.9 lb. The miniature classes averaged 0.3 lb and had more fruit. The white-on-black plastic mulch had significantly higher numbers of fruit and total marketable weight on the average for all 16 pumpkin cultivars than the other three colors. There were no differences for average fruit weight, stem length, fruit diameter, or fruit height due to mulch color.


cucurbita pepo; color mulch; variety trial; drip irrigation

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283