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How Ozone Has Affected the Productivity of Plants on Long Island

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How Ozone Has Affected the Productivity of Plants on Long Island. Margaret T. McGrath Dept. of Plant Pathology and Plant-Microbe Biology, LIHREC, Cornell University, Riverhead, NY [email protected] Ozone Injury in Potato and Watermelon. Ozone Injury Pole Bean.

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slide1

How Ozone Has Affected the Productivity of Plants on Long Island

Margaret T. McGrath

Dept. of Plant Pathology and Plant-Microbe Biology,

LIHREC, Cornell University, Riverhead, NY

[email protected]

slide6

Pumpkin

Ozone Injury

slide7

Pumpkin

Ozone Injury

slide15

Plant Systems Developed for Determining Impact of Ambient Ozone on Plant Productivity:

Ozone Sensitive and Tolerant

White Clover Clones

Snap Bean Lines

slide19

Impact of Ambient Ozone on Plant Productivity on LI:

Reduction in Clover Biomass Estimated Based on Comparing

Sensitive and Tolerant Clones

slide20

Clover System for Assessing Ozone Impact

Ozone-sensitive and ozone-tolerant clones.

10 plants of each grown outdoors in pots.

Foliage removed, dried, and weighed every 28 days.

slide23

Impact of Ambient Ozone on Plant Productivity on LI:

Reduction in Snap Bean Yield Estimated Based on Comparing

Sensitive and Tolerant Lines

slide26

Assessing Ambient Ozone Impact on Plant Productivity in NY

with Snap Bean Genotypes

Differing in Ozone Sensitivity

Planting 1: 5/19/04 5/17/05 5/25/06 5/14/07 5/14/08

Planting 2: 6/16/04 6/17/05 7/3/06 6/12/07 6/12/08

Planting 3: 7/22/04 7/13/05 7/31/06 7/11/07 7/11/08

slide30

Fresh Market Yield Reduction in Sensitive Snap Bean Line (pod wt)

Planting 1: 5/19/04 5/17/05 5/25/06 5/14/07 5/14/08

Planting 2: 6/16/04 6/17/05 7/3/06 6/12/07 6/12/08

Planting 3: 7/22/04 7/13/05 7/31/06 7/11/07 7/11/08

slide31

7/25/08

Planting

#2

Harvested

7/31 - 9/5

slide32

8/3/08

Planting

#2

Fresh Market Pod Yield:

62% less wt

38% less #

slide33

Ozone Concentrations, July 2008 in Riverhead, Long Island, NY

Number Hours Ozone (ppb) Exceeded

slide36

July rainfall:

0.22 inch 7/4

0.05 inch 7/20

Ozone high:

15-21 July

slide38

Mature Seed Number Reduction in Sensitive Snap Bean Line

Planting 1: 5/19/04 5/17/05 5/25/06 5/14/07 5/14/08

Planting 2: 6/16/04 6/17/05 7/3/06 6/12/07 6/12/08

Planting 3: 7/22/04 7/13/05 7/31/06 7/11/07 7/11/08

slide39

Mature Seed Weight Reduction in Sensitive Snap Bean Line

Planting 1: 5/19/04 5/17/05 5/25/06 5/14/07 5/14/08

Planting 2: 6/16/04 6/17/05 7/3/06 6/12/07 6/12/08

Planting 3: 7/22/04 7/13/05 7/31/06 7/11/07 7/11/08

slide40

Impact of Ambient Ozone on Plant Productivity on LI:

< 30% Reduction in Clover Biomass

(during a 28-d growth period; 20% overall)

< 62% Lower Fresh Market Bean Wt

< 56% Fewer Mature Bean Seeds

< 42% Lower Mature Bean Seed Wt

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