Aluminet Thermal Screens Aluminet Thermal Screens

Raz Ganelevin (Agr. MSc)Department of Agriculture, Polysack, Israel

2

Polysack Plastic Industries Ltd. Polysack Plastic Industries Ltd.Aluminet®

ChromatiNet®

Shade Net

Anti-Hail Net

Anti-Insect Net

Decorative Net

Complementary Solution

3

Sufa 30%

Nir Yitzhak 70%

4

Influence of climate onPhotosynthesis

Influence of climate onPhotosynthesis

What is Photosynthesis?What is Photosynthesis?

C6 H12 O66 CO2 6 H2O +

Plant (Chlorophyll)

5

Factors that influencePhotosynthesis

Factors that influencePhotosynthesis

ClosedClosedOpenOpen

Light

Temperature

CO2

6

Importance of the StomatalCondition During Daylight

Importance of the StomatalCondition During Daylight

(E. Raveh) (E. Raveh)

(Epidermal Stomatal in Vicia Fabal)) (Epidermal Stomatal in Vicia Fabal)

ClosedClosed OpenOpen

7

The Effect of Temperature on Photosynthesis

The Effect of Temperature on Photosynthesis

(Berry and Björkman 1980)

8

Aluminet® Aluminet®

Aluminet® IAluminet® O

Aluminet® IC

Aluminet® DSAluminet® RDS

9

Aluminet® Aluminet®

Maximum Temperature

Minimum Temperature

Diffused Light

10

How Aluminet Works ?

11

12

Maximum temperatureMaximum temperature

15

19

23

27

31

35

o C

ALUMINET® 40%Control

(Ganelevin and Zieslin, 1999)

24:00 12:00 18:00 24:0006:00

Rose bud temperature at summer

13

Seedling Growing Under Aluminet®

Seedling Growing Under Aluminet®

14

Open Field

Greenhouse without Aluminet®

Greenhouse with Aluminet®

The Influence of Aluminet® 50% on air Temperature

The Influence of Aluminet® 50% on air Temperature

15

Infrared images of Aluminet® 100%

Temp outside Temp under closed Aluminet 100

16

Infrared images of Aluminet® 100%

Open Thermal screen Closed Thermal screen

17

Rose Growing Under Aluminet®

Rose Growing Under Aluminet®

18

Improvement Quality of Summer Crop Roses

Improvement Quality of Summer Crop Roses

24

22

Length (mm)

0.592.7ALUMINET® 40%

0.382.0Control

Dry Weight (g.)

FreshWeight (g.)

Treatment

(Ganelevin and Zieslin, 1999)

19

Pepper Growing under Aluminet®

Pepper Growing under Aluminet®

20

The influence of Sunlight Radiation on the Size of

Peppers

The influence of Sunlight Radiation on the Size of

Peppers

(Volcani center, 1979)

0% shade 45% shade

21

Gross Weight of Peppers per Sq. m.

Gross Weight of Peppers per Sq. m.

(E. Eitiel et al., 2000)

7.5

8.9

6.6

8.2

6.16.8

6.2

7.87.3

6.8

5.3

6.55.9

6.3

5.36.0

0

1

2

3

4

5

6

7

8

9

Turkal Lorka Mazurka Selika

Type

Kg

/ m2 ALUMINET 40%

Black 30%Black 40%Black 50%

22(E. Eitiel et al., 2000)

Number of Pepper Fruits per Sq. m.

Number of Pepper Fruits per Sq. m.

51

59

44

54

4244

40

5350

44

35

4240 41

34

40

0

10

20

30

40

50

60

Turkal Lorka Mazurka Selika

Num

ber

for

m2

ALUMINET 40%Black 30%Black 40%Black 50%

23

Tomato Growing under Aluminet® Shading Screens

Tomato Growing under Aluminet® Shading Screens

24

Aluminet® blocks IR spectrum radiation, thus it is capable of protecting against radiation frost

IR wavelength spectrum (nm)

Grey

Black

Tran

smitt

ance

(%

)

Aluminet

Minimum TemperatureMinimum Temperature

25M. Teitel et al., 1995.

Aluminet® protect pepper against frost radiation

AlumiNet Black net Outside

Pepper cultivation

26

Aluminet 40% Zantedeschia, Purtugal

Aluminet o 40% Zantedeschia, Purtugal

-5

0

5

10

15

20

25

14:12

15:22

16:32

17:42

18:52

20:02

21:12

22:22

23:32 0:4

21:5

23:0

24:1

25:2

26:3

27:4

28:5

210

:0211

:1212

:2213

:3214

:4215

:5217

:0218

:1219

:2220

:3221

:4222

:52 0:02

1:12

2:22

3:32

Hour

Deg

ree

cels

ius

שטח פתוחבית רשתopen field

aluminet

27

Use of Aluminet® in Frost radiation NightsUse of Aluminet® in Frost radiation Nights

Aluminet®Aluminet®

With out Aluminet®With out

Aluminet®

Argentina 2000Argentina 2000

28

Air Temperature in Heated Greenhouse under Black Net 70% and under

ALUMINET® 70% I (5.1.02)

Air Temperature in Heated Greenhouse under Black Net 70% and under

ALUMINET® 70% I (5.1.02)

( Ganelevin, 2002)

29

ALUMINET® ICALUMINET® IC

30

7

9

11

13

15

17

19

21

22:48 00:00 01:12 02:24 03:36 04:48 06:00 07:12 08:24

Out No Screen Aluminet IC 60%

Air temperature in Basil with heating system◦ C

Hour

ALUMINET® ICALUMINET® IC

31

Aluminet Thermal Screen

“… meets the requirements for acceptance on the SENTER-list for energy saving products.”

Aluminet Thermal Screen

Save more then 50% energy

32

Basil Cultivation in GreenhousesBasil Cultivation in Greenhouses

33

Basil Cultivation in GreenhousesBasil Cultivation in Greenhouses

3.747Aluminet®50%

3.065Black 50%

Fresh Weight

Kg/sq.m

Type

Summer Basil Crops under Various

Shading Nets

Summer Basil Crops under Various

Shading Nets

( Reshef, 2001)

34

Cyclamen in Holland under Aluminet® 50%

Cyclamen in Holland under Aluminet® 50%

35

Diffused Light and direct light

36

The Influence of Aluminet® 50% on the Physiological Parameters of

Citrus Seedling Cultures

The Influence of Aluminet® 50% on the Physiological Parameters of

Citrus Seedling Cultures

(Medina and Machado, 2000)

37

06:00 08:00 10:00 12:00 14:00 16:00 18:00

16

20

24

28

32

36

40

44

06:00 08:00 10:00 12:00 14:00 16:00 18:000,0

0,1

0,2

0,3

06:00 08:00 10:00 12:00 14:00 16:00 18:000

2

4

6

8

10

06:00 08:00 10:00 12:00 14:00 16:00 18:000

200

400

600

800

1000

1200

1400

Tem

pera

ture

(oC

)

Hour

g (m

ol.m

-2.s

-1)

Hour

With Aluminet Without Aluminet

A+Alu

= 1.23A-Alu

A (μ

mol

.m-2.s

-1)

Hour

August 08, 2000

PAR

(μm

ol.m

-2.s

-1)

Hour

06:00 08:00 10:00 12:00 14:00 16:00 18:00

16

20

24

28

32

36

40

44

06:00 08:00 10:00 12:00 14:00 16:00 18:000,0

0,1

0,2

0,3

06:00 08:00 10:00 12:00 14:00 16:00 18:000

2

4

6

8

10

06:00 08:00 10:00 12:00 14:00 16:00 18:000

200

400

600

800

1000

1200

1400

Tem

pera

ture

(oC

)

Hour

g (m

ol.m

-2.s

-1)

Hour

With Aluminet Without Aluminet

A+Alu

= 1.23A-Alu

A (μ

mol

.m-2.s

-1)

Hour

August 08, 2000

PAR

(μm

ol.m

-2.s

-1)

Hour

Citrus SeedlingsCitrus Seedlings

A: Photosynthesis rate, g: Stomatal conductance, PAR: Photosynthetic Active Radiation, Temperature:

Temperature of leaves in Orange crop- measured inside greenhouse, Aug. 8, 2000.

(Medina and Machado, 2000)

38

Strawberry Greenhouse CultivationStrawberry Greenhouse Cultivation

39

Aluminet DS & RDS – darkening screen

shortens the daylight hours Less condensation on the Screen

40

Aluminet RDS and DS

41

Aluminet®Thermal Screen

Aluminet®Thermal Screen

Decrease of the differences between

day and night temperatures

Energy savings in heated

greenhousesProtection against frost

radiation

Thrips and insect repellent

Dramatic yield increase in different

crops

Quality improvement in different kind of produce

43

Use of nets against insects

Problematic insects in pepper & tomato

1. Bemisia Tabaci (Whitefly)

2. Frankliniella Occidentalis (Thrips)

3. Liriomyza sp (Leaf miner)

4. Aphid sp

Popular anti - insect control systems , for peppers & tomatoes

1. Anti-insects nets

3. Organic pesticides 4. Biologic suppress

2. Chemical pesticides

46

Different constructions for anti insects nets

47

Different constructions for anti insects nets

48

Different constructions for anti insects nets

49M. J. Berlinger et al., 1993.

Quantityof Whitefly

Treatment

11.5265.4Aluminet® 60%

2.454.850 mesh

2297.5control

Percentage from Control Crop

Quantities of Whitefly under various treatments

Laboratory test

50

Quantities of Leaf miner & Aphis in different treatments

Leaf minerTreatment

0.00.0Aluminet® 60%

0.10.050 mesh

16.74.1control

Aphis

M. J. Berlinger et al., 1993.

Laboratory test

51M. J. Berlinger et al., 1993.

Thrips QuantityTreatment

3.24.0Aluminet® 60%

13.817.150-mesh

124.1Control

Percentage from control crop

Quantities of Thrips under various types of nets

Laboratory test

52

Tomato cultivation

Whitefly

0

50

100

150

200

250

1 2 3 4 5 6 7 8 9 10 11 12 13

Test No.

Whi

tefly

pop

ulat

ion

Mesh 50OptiNet 50Mesh 40 OptiNet 40

53

Tomato cultivation

Thrips

0

20

40

60

80

100

1 2 3 4 5 6 7 8 9 10 11

Test No.

Thrip

s po

pula

tion

Mesh 50OptiNet 50Mesh 40OptiNet 40

54Y. Antignus et al., 1998.

50 mesh 50 Bionet

Tomato cultivation

55