Volatile Oil from Volatile Oil from Eucalyptus Eucalyptus species As Novel Bioherbicidesspecies As Novel Bioherbicides

Daizy R. BATISH*, Shalinder KAUR, Harminder Pal SINGH and Ravinder K.

KOHLIBotany Department, Panjab

University, Chandigarh

Objective of the StudyObjective of the Study

To test Phytotoxicity of eucalypt volatile oils towards

weeds (Echinochloa crus-galli, Parthenium hysterophorus and Cassia occidentalis).

with a view to

choose them for development as a bioherbicide.bioherbicide.

Echinochloa crus-galli

Parthenium hysterophorus

Changes in Injury Changes in Injury LevelLevel

0

20

40

60

80

10021 DAT

r = 0.980

r = 0

.941

Vis

ible

Inju

ry (

%)

Concentration (%)

0 2 4 6 8 10

0

20

40

60

80

1001 DAT

r = 0.991

r = 0.954

E. crus-galli

Vis

ible

Inju

ry (

%)

ConclusionsConclusions

Eucalypt oils have a weed suppressing effect.

Affect the photosynthetic and respiratory activity.

Treatment causes visible injury in the mature plants

Result in Rapid Electrolyte leakage – Membrane Integrity

Could be Used as Bioherbicide.