Application of Humic acid in pomegranate nursery

 Objectives:

 To analyze the effect of humic acid application on plant growth innursery production through the observed changes in thediameter, height and root system development of the sapling.
 To analyze the changes in the soil physical and chemical
properties after humic acid application.

 Treatment: Starter nutrients: 31 Kg Urea+31Kg DAP+5Mt manure N=37 Kg/ha, P2O5=23.4 Kg/ha, K2O=22.7 Kg/ha Humic acid: 200 Kg/Ha, 2 application (June and July 2008) 100Kg
each in1:8 proportion with water, side application in10 cm soildept.
 Fulvic acid: 10 l/Ha, foliar application, 1:10 with water (August2008)
 Irrigation: Furrow type surface irrigation.
Humic Substances in Ecosystems 8, Šoporňa 13.13.-17.9.2009 Slovakia

Application of Humic acid in pomegranate nursery
Plant growth
10.00

120.009.00
100.00
8.00
7.00
80.00

60.00

5.00
4.00

40.00
3.00
2.00
20.00
1.00
0.00

0.00
MayJuneTest plant diameter

July

AugustSeptember

October

Control plant diameter
Test plant height
Humic Substances in Ecosystems 8, Šoporňa13.--17.9.2009 Slovakia
13.

NovemberControl plant height

cmmm6.00

Application of Humic acid in pomegranate nursery

Humic Substances in Ecosystems 8, Šoporňa
13.--17.9.2009 Slovakia
13.

Application of Humic acid in pomegranate nursery

Humic Substances in Ecosystems 8, Šoporňa
13.--17.9.2009 Slovakia
13.

Regression

Application of Humic acidin pomegranate nursery

Regression

Regression

Regression

Regression

Humic Substances in Ecosystems 8, Šoporňa
13.--17.9.2009 Slovakia
13.

Regression

Application of Humic acidin pomegranate nursery
Regression

Regression

Regression
Regression

Humic Substances in Ecosystems 8, Šoporňa13.--17.9.2009 Slovakia
13.

Application of Humic acid in pomegranate nursery

Humic Substances in Ecosystems 8, Šoporňa
13.--17.9.2009 Slovakia
13.

Application of Humic acid in pomegranate nursery

Sapling development
40%60%
Test plants

No. of branches = 2
No. of branches > 3

No. of branches > 3

72%
28%
Control plants

No. of branches = 3

No. of branches = 20%

10%

20%

30%

40%

50%

Humic Substances in Ecosystems 8, Šoporňa
TestControl
13.--17.9.2009
13.
Slovakia

60%

70%80%

Application of Humic acid in pomegranate nursery

Humic Substances in Ecosystems 8, Šoporňa 13.13.-17.9.2009 Slovakia

 Application of Humic acid in pomegranate nursery
Number of roots

9080
706050No.

4030
2010012345678

Humic Substances in Ecosystems 8, Šoporňa13.--17.9.200913.
Control
plant Slovakia
Test plant

Test plant
Control plant
910Ave.

Application of Humic acid in pomegranate nursery

Humic Substances in Ecosystems 8, Šoporňa13.--17.9.2009 Slovakia
13.

 Application of Humic acid in pomegranate nursery
0.90

8.20

Soil test results
0.80

Salinity %ECpH

8.10

0.70
8.00
0.60
7.900.50

0.40

7.80

0.30
7.70
0.20
7.60
0.10

0.00

7.50
January-08

September-08

0-15 cm

0-15 cmJanuary-08

September-08

Humic Substances in Ecosystems 8, Šoporňa
15-30cm
15-30 cm
13.13.
-17.9.2009 Slovakia

January-08

September-08

30-45 cm

30-45 cm Application of Humic acid in pomegranate nursery
Soil test results
250.0

200.0

150.0

mg/l
100.0

50.0

0.0
January-08

September-08

January-08

September-08

January-08

September-08

0-15 cm

0-15 cm

15-30 cm

15-30 cm

30-45 cm

30-45 cm

Humic Substances in Ecosystems 8, Šoporňa
13.--17.9.200913.
P-PO4 Slovakia
K Application of Humic acid in pomegranate nursery
Soil test result

12.0

10.0

8.0

mg/l 6.0
4.0

2.0

0.0

N-NO3
0-15 cm January-08
0-15 cm September-08
15-30 cm January-08
Humic Substances in Ecosystems 8, Šoporňa
15-30 cm September-08 30-45cm January-08
30-45 cm September-08
13.--17.9.2009
13.
Slovakia