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Effects of Plant Density and Tillage on ‘Montauk’ Sweet Corn Robert Durgy, CAES Jude Boucher, UConn
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BACKGROUND INFO ‘Montauk’ very popular It makes a large ear Growers complaints: –Sixty-ear bag is over full –Hard to close the bag –Heavy to carry
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QUESTIONS TO ANSWER Higher population smaller ears? Reduction in quality? Profitability?
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RESEARCH BASICS Two locations: Griswold & Storrs Cultivation –Griswold: Conventional tillage –Storrs: Conventional/Deep Zone
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RESEARCH BASICS Fertilizer: 60 N–120 P–120 K preplant –Sidedress 60 N Planting: –Griswold: Hand planted –Storrs: Matermacc vacuum seeder
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RESEARCH BASICS Weed control –Griswold: Lumax preemergence –Storrs: Impact postemergence Insect control: None Irrigation: None Harvest: Hand pick mature ears
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GRISWOLD TREATMENTS 2011 25,000 (8.5) 30,000 (7) 35,000 (6) 40,000 (5.25) 45,000 (4.75) 2012 26,136 (8) 29,870 (7) 34,848 (6) 41,818 (5)
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STORRS TREATMENTS –Main Plot: Conv. tillage vs. DZT –Population treatments: 26,134 (8) 34,848 (6) 52,269 (4)
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19%
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14%
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10%
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6%
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2.5%
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16.5%
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17.5%
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18%
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3%
36
2.5%
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RateSeed Cost EarsBagsGrossIncrease 26136$183.3021805363$2904$0 29870$211.5023469391$3128$184.60 34848$246.7526376440$3520$521.75 41818$296.1030410507$4056$981.60
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CONCLUSIONS Increasing ‘Montauk’ population: Reduces ear weight Slightly reduces ear length and width Reduces quality over 40K Makes maturity more variable Can be more profitable
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