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Trees as recultivation or fitopurification instrument and usage of
municipal residues (wastewater sludge and wood ash) for
“rehabilitation” of tree stands
Деревья как инструмент рекультивации и фитоочищения и
использование муниципальных остатков (осадки сточных вод и
пепла древесины) для «реабилитации» рощи.
Dagnija Lazdina, Senior Researcher, Silava
Дагния Лаздиня, Старший научный сотрудник, Silava
Trees on roadsides
Small trees and bushes along
highways and country roads:
 absorb dust and small particles;
 slow, absorb, and clean water that
runs off the highway, resulting in
reduced soil erosion, flood control and
cleaner water supplies;
 serve as living snow fences, catching
snow rather than letting it drift across
travel lanes;
 provide important pollinator habitat.
Transportation enhancements help
by:
 minimizing necessary roadside
maintenance;
 supporting trail construction and
tourism;
 employing landscaping professionals
and County Roadside Managers.
 supporting farmers who cultivate and
sell plant material.
http://www.alamy.comhttp://biocharfarms.org
Trees on degraded areas – peat queries
2008
in front - lefted to
natural proceses
2008
2013
2013
Trees on degraded areas – bare sand
2013
in front - lefted to
natural proceses
2013
2013
2008
2008
Waste water sludge = deposit of plant nutrient elements
http://eurocol.in/euroagri/micro-nutrients.html
Is waste water sludge = waste?
Heavy metals
Latvia soils are lacking Cu, Zn and B
Experiment estasblished 2006
Treatmen
t
First year Second year Third year
Control
Waste
water
sludge
Mineral
fertilizers
Fourth season - summer
Control -
unfertilized
After six years
Control -
unfertilized
Production
WWS Mineral
fertilizer
FSI
WWS Mineral
fertilizer
B –birch
B-K birch ingrowed
P-pine
P-K-pine ingrowed
Ma- black alder
E - spruce
Forest in similar growing
conditions
Four years after fertilization with wood ash and mineral fertilizers
specie Mineral
fertilizer
Wood ash Mineral
fertilizer
Aspen 0 6060 1
Birch 266266 265265 153
Spruce 9 2 2
Pine 22 21 25
mineral fertilizer wood ash mineral fertilizer
0
0.5
1
1.5
2
A B E P
heightoftrees,m
2007
2013
Mineral fertilizers
WOOD-EN-MAN (Wood for energy – a contribution to the
development of sustainable forest management)
50 t per ha (5 kg m-2
) A Vacciniosa turf. mel., B – Myrtillosa turf. mel. un C –
Myrtillosa turf. mel. / Caricoso-phragmitosa forest sites.
WOOD-EN-MAN (Wood for energy – a contribution to the
development of sustainable forest management)
l
control
Wood ash
Wood ash in LatviaАгрохимические особенности древесной золы полученной на деревообрабатывающих и энергетических предприятиях Латвии
Игорс Гусаревс, Модрис Окманис, Дагния Лаздиня
Wood ash – for liming or fertilization?
Fertilization of damaged forest stands
Control minerals wood ash
damages
60-150 kg K ha-1
(2-4 T wood ash or 150 kg minerals....)
Fertilizers
mēslojums N, kg ha-1
P, kg ha-1
K, kg ha-1
Wood ash 3 tod ha-1
0.7 19.3 164.7
Waste water sludge 10 tod ha-1
324.80 136.00 19.60
1,5 tod ha-1
wood ash + sludge 5 tod ha-1
162.75 77.65 92.15
Biogass production residue 30 t ha 9.75 19.00 70.00
Optimum 100-200 20-40 100-200
20-09-2011
Wood ash and waste water sludge mixture
control
digestate
woodash
woodashandsludge
sludge
0
1
2
3
4
5
6
7
2010 2011 2012 2013
height,m
Fertilization of plantations
Amounts of main nutrients applied by fertilisers in plantations
Resources to extend biomass production
(Rancane, Makovskis, Lazdina, Daugaviete, Gūtmane, Berzins. 2014, Agronomy research)
The combined growing of
trees and grasses on the
same area, give
possibility to save costs
and earn an incomes in
first years, which cover
starting expenses.
Reed canary grass,
festulolium, and galega
could be successfully
grown for biomass and
seed production between
trees rows in the
agroforestry system in
Latvia. The use of
different bio-energy and
municipal waste products
as fertilisers in general
provided higher biomass
and seed yields.
Thank You for attention!
Too much!!!
Optimum !!!
Deficiency !!!
Sludge production:
18088 +4727 ~ 22815 T
Wood ash
produced...~
100 000 T

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GBF 2015, April 17th, Presentation of Ms. Dagnija Lazdina

  • 1. Trees as recultivation or fitopurification instrument and usage of municipal residues (wastewater sludge and wood ash) for “rehabilitation” of tree stands Деревья как инструмент рекультивации и фитоочищения и использование муниципальных остатков (осадки сточных вод и пепла древесины) для «реабилитации» рощи. Dagnija Lazdina, Senior Researcher, Silava Дагния Лаздиня, Старший научный сотрудник, Silava
  • 2. Trees on roadsides Small trees and bushes along highways and country roads:  absorb dust and small particles;  slow, absorb, and clean water that runs off the highway, resulting in reduced soil erosion, flood control and cleaner water supplies;  serve as living snow fences, catching snow rather than letting it drift across travel lanes;  provide important pollinator habitat. Transportation enhancements help by:  minimizing necessary roadside maintenance;  supporting trail construction and tourism;  employing landscaping professionals and County Roadside Managers.  supporting farmers who cultivate and sell plant material. http://www.alamy.comhttp://biocharfarms.org
  • 3. Trees on degraded areas – peat queries 2008 in front - lefted to natural proceses 2008 2013 2013
  • 4. Trees on degraded areas – bare sand 2013 in front - lefted to natural proceses 2013 2013 2008 2008
  • 5. Waste water sludge = deposit of plant nutrient elements http://eurocol.in/euroagri/micro-nutrients.html
  • 6. Is waste water sludge = waste?
  • 7. Heavy metals Latvia soils are lacking Cu, Zn and B
  • 8. Experiment estasblished 2006 Treatmen t First year Second year Third year Control Waste water sludge Mineral fertilizers
  • 9. Fourth season - summer Control - unfertilized
  • 10. After six years Control - unfertilized
  • 11. Production WWS Mineral fertilizer FSI WWS Mineral fertilizer B –birch B-K birch ingrowed P-pine P-K-pine ingrowed Ma- black alder E - spruce Forest in similar growing conditions
  • 12. Four years after fertilization with wood ash and mineral fertilizers specie Mineral fertilizer Wood ash Mineral fertilizer Aspen 0 6060 1 Birch 266266 265265 153 Spruce 9 2 2 Pine 22 21 25 mineral fertilizer wood ash mineral fertilizer 0 0.5 1 1.5 2 A B E P heightoftrees,m 2007 2013 Mineral fertilizers
  • 13. WOOD-EN-MAN (Wood for energy – a contribution to the development of sustainable forest management) 50 t per ha (5 kg m-2 ) A Vacciniosa turf. mel., B – Myrtillosa turf. mel. un C – Myrtillosa turf. mel. / Caricoso-phragmitosa forest sites.
  • 14. WOOD-EN-MAN (Wood for energy – a contribution to the development of sustainable forest management) l control Wood ash
  • 15. Wood ash in LatviaАгрохимические особенности древесной золы полученной на деревообрабатывающих и энергетических предприятиях Латвии Игорс Гусаревс, Модрис Окманис, Дагния Лаздиня
  • 16. Wood ash – for liming or fertilization?
  • 17. Fertilization of damaged forest stands Control minerals wood ash damages 60-150 kg K ha-1 (2-4 T wood ash or 150 kg minerals....)
  • 18. Fertilizers mēslojums N, kg ha-1 P, kg ha-1 K, kg ha-1 Wood ash 3 tod ha-1 0.7 19.3 164.7 Waste water sludge 10 tod ha-1 324.80 136.00 19.60 1,5 tod ha-1 wood ash + sludge 5 tod ha-1 162.75 77.65 92.15 Biogass production residue 30 t ha 9.75 19.00 70.00 Optimum 100-200 20-40 100-200
  • 19. 20-09-2011 Wood ash and waste water sludge mixture control digestate woodash woodashandsludge sludge 0 1 2 3 4 5 6 7 2010 2011 2012 2013 height,m
  • 20. Fertilization of plantations Amounts of main nutrients applied by fertilisers in plantations
  • 21. Resources to extend biomass production (Rancane, Makovskis, Lazdina, Daugaviete, Gūtmane, Berzins. 2014, Agronomy research) The combined growing of trees and grasses on the same area, give possibility to save costs and earn an incomes in first years, which cover starting expenses. Reed canary grass, festulolium, and galega could be successfully grown for biomass and seed production between trees rows in the agroforestry system in Latvia. The use of different bio-energy and municipal waste products as fertilisers in general provided higher biomass and seed yields.
  • 22. Thank You for attention! Too much!!! Optimum !!! Deficiency !!!
  • 23. Sludge production: 18088 +4727 ~ 22815 T Wood ash produced...~ 100 000 T