Canopy management | Practices & Information

Mar 26, 201614 likes7,779 views

Presentation about the importance of canopy management & the practices followed in the process of canopy management. Presentation for academic purposes.

WHAT IS CANOPY?
 Canopy is the above ground portion of a plant community or crop,
formed by the collection of individual plant crowns.

WHY CANOPY MANAGEMENT?
Unmanaged tree canopy not only reduces the productivity of
agricultural crops, but nevertheless deteriorates the quality of produce
as well.
1. Canopy size decides the transmission of photosynthetically active
radiation to the understorey crops.
2. Canopy management practices like pollarding and partial crown
removal not only affects foliage and branch but also modifies
physiological parameters and resource utilization pattern.

CANOPY MANAGEMENT PRACTICES
POLLARDING
Pollarding is a method of
pruning that keeps trees
and shrubs smaller than
they would naturally grow.
It is normally started once
a tree or shrub reaches a
certain height, and annual
pollarding will restrict the
plant to that height.
PARTIAL CROWN REMOVAL
Partial crown removal refers
to the direct alteration of
tree crown. It ensures
proper light penetration to
the crops on the lower
layers. Light penetration is
an important factor and
Partial crown removal helps
to maintain the level.

LOPPING
Tree lopping is the process
of trimming various
sections of a tree.
Lopping may involve
clearing away branches
or limbs, or even
shortening trunks.
THINNING
A felling made in an
immature stand for the
purpose of improving the
growth and form of trees
that remain, without
permanently breaking the
canopy.
CANOPY MANAGEMENT PRACTICES

LIGHT AND SHADE
 Light is one of the main climatic
factors, which drives
production.
 The quantity as well as quality
of solar radiation transmitted
by tree canopy decides
growth and productivity
potential of the field crops.
 amount of solar radiation
intercepted by the tree
canopy is responsible for
production of foliage and
branch wood biomass.
 Major agricultural crops grown
under agroforestry trees are
shade sensitive. so are bound
to be adversely affected on
account of shading.
 Shade intensity and duration
both will have strong negative
effects on the performance of
understorey crops.
 Many studies have concluded
that shading caused due to
the presence of tree canopies
is a major factor causing crop
yield reduction.

EMERGENT LAYER
CANOPY LAYER
UNDERSTORY LAYER
FOREST FLOOR
FOREST CANOPY LAYERS
100 % 10 %
79 %
7 %
2 %2 %
LIGHT

EMERGENT LAYER
Consists of giant emergent
trees that tower above the
surrounding canopy.
The air is much drier and
moderately strong winds
blow through their
branches.
CANOPY LAYERS
CANOPY LAYER
Found directly beneath the
over story layer (emergent
layer).
The primary life sustaining
layer with an abundance of
food and forms a natural
roof over the remaining two
layers beneath.

UNDERSTORY LAYER
Directly underneath the
canopy layer and on top
of the forest floor.
This layer is a dark,
sometimes almost
impenetrable natural
habitat like vines, shrub
and broadleaf trees.
CANOPY LAYERS
FOREST FLOOR
The Forest Floor is the
ground layer.
Only around 2% of the total
light reaches down this
layer
Quality of the soil is
extremely poor and very
few plants are found
growing in this area.

CONCLUSION
 Any agroforestry system consisting trees having leaf area index (LAI)
between 4 and 6 may render it less productive and/ or
uneconomical due to developing canopies.
 On the expected lines, unmanaged tree canopy not only reduces
the productivity of agricultural crops, but nevertheless deteriorates
the quality of produce as well.
 Good Canopy management results in good sun light penetration
and good yield.

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Canopy management | Practices & Information

1. CANOPY MANAGEMENT ANAND CHARVIN.G

2. WHAT IS CANOPY?  Canopy is the above ground portion of a plant community or crop, formed by the collection of individual plant crowns.

3. WHY CANOPY MANAGEMENT? Unmanaged tree canopy not only reduces the productivity of agricultural crops, but nevertheless deteriorates the quality of produce as well. 1. Canopy size decides the transmission of photosynthetically active radiation to the understorey crops. 2. Canopy management practices like pollarding and partial crown removal not only affects foliage and branch but also modifies physiological parameters and resource utilization pattern.

4. CANOPY MANAGEMENT PRACTICES POLLARDING Pollarding is a method of pruning that keeps trees and shrubs smaller than they would naturally grow. It is normally started once a tree or shrub reaches a certain height, and annual pollarding will restrict the plant to that height. PARTIAL CROWN REMOVAL Partial crown removal refers to the direct alteration of tree crown. It ensures proper light penetration to the crops on the lower layers. Light penetration is an important factor and Partial crown removal helps to maintain the level.

5. LOPPING Tree lopping is the process of trimming various sections of a tree. Lopping may involve clearing away branches or limbs, or even shortening trunks. THINNING A felling made in an immature stand for the purpose of improving the growth and form of trees that remain, without permanently breaking the canopy. CANOPY MANAGEMENT PRACTICES

6. LIGHT AND SHADE  Light is one of the main climatic factors, which drives production.  The quantity as well as quality of solar radiation transmitted by tree canopy decides growth and productivity potential of the field crops.  amount of solar radiation intercepted by the tree canopy is responsible for production of foliage and branch wood biomass.  Major agricultural crops grown under agroforestry trees are shade sensitive. so are bound to be adversely affected on account of shading.  Shade intensity and duration both will have strong negative effects on the performance of understorey crops.  Many studies have concluded that shading caused due to the presence of tree canopies is a major factor causing crop yield reduction.

7. EMERGENT LAYER CANOPY LAYER UNDERSTORY LAYER FOREST FLOOR FOREST CANOPY LAYERS 100 % 10 % 79 % 7 % 2 %2 % LIGHT

8. EMERGENT LAYER Consists of giant emergent trees that tower above the surrounding canopy. The air is much drier and moderately strong winds blow through their branches. CANOPY LAYERS CANOPY LAYER Found directly beneath the over story layer (emergent layer). The primary life sustaining layer with an abundance of food and forms a natural roof over the remaining two layers beneath.

9. UNDERSTORY LAYER Directly underneath the canopy layer and on top of the forest floor. This layer is a dark, sometimes almost impenetrable natural habitat like vines, shrub and broadleaf trees. CANOPY LAYERS FOREST FLOOR The Forest Floor is the ground layer. Only around 2% of the total light reaches down this layer Quality of the soil is extremely poor and very few plants are found growing in this area.

10. CONCLUSION  Any agroforestry system consisting trees having leaf area index (LAI) between 4 and 6 may render it less productive and/ or uneconomical due to developing canopies.  On the expected lines, unmanaged tree canopy not only reduces the productivity of agricultural crops, but nevertheless deteriorates the quality of produce as well.  Good Canopy management results in good sun light penetration and good yield.

11. THANK YOU

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