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Cucumber Cropping Systems: Impacts on Weeds, Yield and Fruit Quality Ohio GLVWG Feb 24, 2005 Mathieu Ngouajio.

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Presentation on theme: "Cucumber Cropping Systems: Impacts on Weeds, Yield and Fruit Quality Ohio GLVWG Feb 24, 2005 Mathieu Ngouajio."— Presentation transcript:

1 Cucumber Cropping Systems: Impacts on Weeds, Yield and Fruit Quality Ohio GLVWG Feb 24, 2005 Mathieu Ngouajio

2 2003 production in 1000 tons 2003 U.S. acreage: 119,000 A Total Value: $178 million

3 oWide row spacing is one of the strategies proposed for management of Phytophthora in pickles Wide rows oDecrease relative humidity within the plant canopy oAllow the soil to dry faster oLow plant Population oLow Yield?

4 GrowerRow spacing (inches) In row spacing (inches) Plant population (plants/acre) ,000 2* , , , ,000 * Data from Research Station Row spacing and plant populations used for machine harvest cucumbers in Michigan Spacing used in Michigan: 11 to 30 inch rows Plant populations: 35,000 to 150,000 plants/acre

5 Row spacing used in other states StateRow spacing (inches) In row spacing (inches) Plant population (plants/acre) Kentucky , ,000 Maryland , ,000 North Carolina , ,000 Oregon , ,000 Michigan , ,000 Ohio ,000-87,000 Is the Ohio Information accurate? Source: Crop profiles mainly

6 Row spacing varies: From State to State From grower to grower within a State Rows are: Narrower for machine harvest Wider for hand pick cucumbers oLow plant Population oLow Yield?

7 Is it possible to increase row spacing (reduce populations) and maintain acceptable yield and fruit quality?

8 Between Row spacing In row spacingTarget Populations/A 30 (76.2 cm) 6 (15.2 cm) 35,000 5 (12.7 cm) 41,000 4 (10.2 cm) 52, (61.0 cm)6 43, , , (45.7 cm)6 57, , , (30.5 cm)6 86, , ,000

9 Row SpacingPlants/A% 12 x 5 Inch 103, x 5 Inch 69, x 5 Inch 52, x 5 Inch 41,00040

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14 Ground Cover by cucumber canopy Took digital Photos of plots Took digital Photos of plots Use image analysis software to measure % ground cover Use image analysis software to measure % ground cover

15 Canopy dynamics Fruit yield by grade Vine weight Fruit number Fruit Quality

16 -Specific gravity -Firmness -Brix value (soluble solids) -Color -Seed size

17 Between Row Spacing (BRS) Specific gravityFirmness (g/ml) Lbs/Sq inch c 131 c bc 136 bc a 143 a ab 139 ab

18 2004

19 Between Row Spacing (BRS) SugarColorSeed size % (0 to 5) mm c b b a 2.4

20 05 12 rows 30 rows

21 n Fruits are greener and firmer with wide rows n Fruits from cover crop plots are firmer

22 Thanks to the organizers of the Congress


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