Agriculture Reference
In-Depth Information
Table 5.8.
Herbicides tested by the FDGEDA de l'Aube and the FNPC since 1989.
Product tested
Year of test Observations
Challenge
2003
b
Very selective in the pre-emergence phase, becoming phytotoxic after
emergence and can destroy the crop completely when added to Tramat.
Selective results and efficacious at a dose of 3l/ha.
1999
a
1998
a
1990
a
1989
a
Lasso
1990
a
1989
a
Acceptable selectivity but weakly efficacious on hemp weeds.
Tramat EC
1990
a
Highly phytotoxic to hemp.
1989
a
Extoll
1998
a
Highly phytotoxic to hemp.
Defi
1998
a
Highly phytotoxic to hemp.
Basagran
1998
a
Highly phytotoxic to hemp.
Gratil
1998
a
Highly phytotoxic to hemp.
Racer
1989
a
Highly phytotoxic to hemp.
Assert
1999
a
Efficient against field mustard and good selectivity.
Milagro
1999
a
Highly efficient against field mustard and good selectivity, especially for the
young stages.
Lontrel
2002
b
2001
b
2000
b
1999
b
Highly selective for hemp.
Limited efficacy and risky.
Vip
2000
b
Discriminates in favour of hemp.
Limited efficacy.
Kerb Flo
2000
b
Discriminates in favour of hemp.
Cent 7
2002
b
2001
b
2000
b
Discriminates in favour of hemp.
Not efficacious regardless of the stage of application.
Emblem
2002
b
2001
b
1998
a
Very efficient (start of soiling one month after treatment, i.e. at the 5 cm stage).
Good compromise between selectivity and efficiency.
Harness
2001
b
Discriminates in favour of hemp.
Average efficiency.
Pyron DE
2002
b
Not efficacious regardless of the stage of application.
Andiamo
2002
b
Efficient (start of contamination by weed infestation 1 month after
treatment, i.e. at the 5 cm stage).
Note
:
a
Product tested by the FDGEDA de l'Aube;
b
product tested by the FNPC.
as the industrial processing of the plant
requires that it be free of contamination
from plastic.
The use of glyphosphate at weak con-
This will involve estimating the number
of
orobanche
seeds in the soil.
3
•
centrations (20-80 g/ha) can provide a
solution eventually but its toxicity to
hemp at these levels requires further
investigation.
An evaluation of the efficiency of the
5.6
Other Areas of Research
5.6.1 Irrigation
•
technique of false seeding necessitates
that a system be developed for checking
that the soil has been decontaminated.
Hemp's water requirement was evaluated by
the FNPC in 2001 and 2002 and found to be
30-50 mm/t of dry matter.
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