Field trials, 2013

• Bullmark 1, May 31, 22 SeedPads

• Agnsjön, June 13, 50 SeedPads

• Bullmark 2, June 24, 50 SeedPads

• Ruonivaara, Finland, June, July, August, September, October, November, 50 SeedPads per date (tot: 300)

Bullmark (Bullmark 1)

Agnsjön

After three days

After 25-30 days

After 55 days

Seedling establishment, Sweden

Seedling establishment

Treatment Bullmark 1 Bullmark 2 Agnsjön Medel

SeedPad 1.0 73 % 79 % 75 % 76 %

Cover, peat 73 % 48 % 85 % 69 %

Microprep + cover with sand

- 68 % 72 % 70 %

Conventional direct seeding

9 % - - 9 %

No seedling established, Sweden

Såddpåse Mikroprep + täckning Konventionell sådd

Bullmark 1 4.54545454545455 NaN 45.4545454545454

Bullmark 2 2 16 NaN

Agnsjön 8 10 NaN

3

8

13

18

23

28

33

38

43

48

Nollytor N

olly

tor (

%)

Ruonivaara 2013June July

August

July August September October0

10

20

30

40

50

60

70

80

P. sylvestris P. sylvestris, bagP. contorta, not treated P. contorta, treated

September October0

10

20

30

40

50

60

70

80

P. sylvestris P. sylvestris, bagP. contorta, not treated P. contorta, treated

August September October0

10

20

30

40

50

60

70

80

P. sylvestris P. sylvestris, bagP. contorta, not treated P. contorta, treated

Germination, %

Germination, %

Germination, %

Modeling of moisture conditions close to soil surface

-15000

-12500

-10000

-7500

-5000

-2500

0

01-maj 31-maj 30-jun 30-jul 29-aug 28-sep

Vat

ten

po

ten

tial

(cm

v.p

.)

A

-1000

-750

-500

-250

0

01-maj 31-maj 30-jun 30-jul 29-aug 28-sep

Vat

ten

po

ten

tial

(cm

v.p

.)

B

-15000

-12500

-10000

-7500

-5000

-2500

0

01-maj 31-maj 30-jun 30-jul 29-aug 28-sep

Vat

ten

po

ten

tial

(cm

v.p

.)

C

-1000

-750

-500

-250

0

01-maj 31-maj 30-jun 30-jul 29-aug 28-sep

Vat

ten

po

ten

tial

(cm

v.p

.)

D

* Drivdata: klimatdata från Lycksele för perioden 1963-01-01 – 1987-12-31 Harald Grip - SLU

0

2

6

cm

Humus

Mineralsoil

SoilprofilesHumus on Mineralsoilmineralsoil

Covering with organic substrate is efficient for improving moisture

conditions

A

D

C

B

Permanent vissningsgräns

Enough for germination at normal air humidity conditions Oleskog et al 2000.

Conclusions

Seedling establishment over 70% is possible during the first summer

Robust seedling establishment

Possible to develop

Possible to use seed orchard seeds

Results:

Questions: Production cost?

Productivity?

Total cost?

Seeded: July 8Photo: September 2