Biocontrol of Moss with Sodium Bicarbonate

University of Massachusetts AmherstScholarWorks@UMass AmherstNorth American Cranberry Researcher andExtension Workers Conference NACREW 2017

Aug 30th, 11:00 AM - 11:15 AM

Biocontrol of Moss with Sodium BicarbonateJocelyn MoreauFruit d'Or, Quebec CA, jmoreau@fruit-dor.ca

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Recommended CitationMoreau, Jocelyn, "Biocontrol of Moss with Sodium Bicarbonate" (2017). North American Cranberry Researcher and Extension WorkersConference. 18.https://scholarworks.umass.edu/nacrew/2017/papers/18

ORGANIC CONTROL OF MOSS WITH SODIUM BICARBONATE

NACREW 2017, PLYMOUTH, MASS

AUGUST 2017

0

JOCELYNE MOREAU, AGR.PROJECT MANAGER

BERRY SUPPLY

jmoreau@fruit-dor.ca

PRESENTATION PLAN

❖Objectives

❖Botanical info

❖Treatments year 1 and 2

❖Results

❖Conclusion

1

Objectives

Find a biopesticide affordable and efficient for the control of mosses in

cranberry bogs

What was investigated

Do we apply solid or liquid treatment ?

Same effects on different’s species ?

Persistant effet ?

What is the effect on soil pH ?

2

Botany

3

Sphagnum sp.

Sphagnum magellanicum

Hypnum cupressiforme(cypress moss)

4

Polytricum

formosum

(haircap moss)

5

Treatments – YEAR 1

A B CHaircap moss Cypres moss Cypres moss

Liquid* – May 18th Solid – June 1st Solid – June 16th

T1 - powder (60g/ft2)

T2 – 7.5g / ft² T1 – 7g / ft² T1 – 7g / ft²

T3 – 15g / ft² T2 – 15g / ft² T2 – 15g / ft²

T4 – 30g / ft² T3 – 30g / ft² T3 – 30g / ft²

T5 – 40g / ft² T4 – 40g / ft² T4 – 40g / ft²

*500 ml / ft²

6

RESULTS – Few pictures

BEFORE – YEAR 1

7

8

15 DAYS AFTER - POWDER TREATMENT CYPRESS MOSS

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1 year later……

10

RESULTS - YEAR 1

11

0

20

40

60

80

100

120

T1 (powd) T2 (15g/li) T3 (30 g/li) T4 (60 g/li) T5 (80 g/li)

Mo

rta

lity

(%

)

Mortality rate (%) over time - Polytric (liquid treatment)

48 hres 15 days 11 weeks 18 weeks

12

0

20

40

60

80

100

120

T1 (7g/ft²) T2 (15g/ft²) T3 (30g/ft²) T4 (40g/ft²)

Mo

rta

lity

(%

)

Mortality rate (%) over time - 1st test Cypres moss (powder)

48 hres* 15 days 8 weeks 14 weeks

13

0

20

40

60

80

100

120

T1 (7g/ft²) T2 (15g/ft²) T3 (30g/ft²) T4 (40g/ft²)

Mo

rta

lity

(%

)

Mortality rate (%) over time - 2nd test Cypres moss (powder)

28 hres 15 days 7 weeks 14 weeks

SOIL PH INFLUENCE – YEAR 1

14

Application Soufre4

4,5

5

5,5

6

6,5

7

June 03 July 07 August 03 Sept 21

pH

Soil pH variation over time in relation with treatment’s concentration1st test (liquid)

powder-60g

30 g / lit

80 g / lit

Control powder-

60gControl 30 g / lit

Control 80 g / lit

sulfur

Treatments – YEAR 2

A 60 PSI 2,8 MPH 182 Gal/ac TJ XR 11015

B 50 PSI 2,2 MPH 220 Gal/ac TJ XR 11015

15

A BHaircap moss Haircap moss

Liquid – June 7th (1 shot) Liquid – June 7th (4 to 8 shots)

T1 – 30 g/ lit (0,5 g/ft²) T1 – 30 g / lit (2,3 g/ft²)

T2 – 40 g/ lit (0,6 g/ft²) T2 – 40 g / lit (3 g/ft²)

T3 – 60 g/ lit (0,95 g/ft²) T3 – 60 g / lit (4,6 g/ft²)

T4 – 80 g/ lit (1,26 g/ft²) T4 – 80g / lit (12 g/ft²)

16

SOIL PH INFLUENCE – YEAR 2

17

3,80

4,00

4,20

4,40

4,60

4,80

5,00

June 6 June 13 July 4 August 1st

pH

Soil pH variation over time in relation with treatment's concentration

30 g / lit

60 g / litre

80 g / lit

Control 30

g / lit

Control 60

g / litre

Control 80

g / lit

CONCLUSION

• Very promising ☺

• Best dose : 12 to 15 g / ft² but …..

• Effect on soil pH: 2 month approx

• Liquid treatment better results

• Durable effect…..?

• accepted, but NOT registered in Canada yet !

18

THANKS to Ferme d’Or and Atocas Blandford

QUESTIONS ?

19