abstracts - INCDCSZ Brasov

-1998-1999-2000: paraffinic mineral oil: BIOPALINE 1535 (826g/l)
insecticide : MAVRIK B (thiomethon 200g/l + fluvalinate 72g/l)
-2001: paraffinic mineral oil: BIOPALINE 1535 (826g/l)
vegetal oil : TELMION (Rape Seed Oil 85%)
-2006: paraffinic mineral oil: PROTEX OIL (850g/l)
insecticides : SUMI ALPHA (Esfenvalerate, 25g/l), PLENUM
(Pymetrozine,500g/kg)
Treatment effectiveness against the spread of PVY was measured by the reduction of PVY
infection (%) obtained in the treated plots on tubers samples, compared to the one measured in the
control (not protected) plots:
Y = [1-a/b] * 100 where : Y= PVY infection reduction rate (PVY effectiveness),
a= PVY infection in the treated object
b= average of PVY infection in control plots
Results
1. 1998-1999-2000 trial.
1.1 Treatments efficiency against PVY dissimination.
Table 2. Measured PVY infection rate (mean ± standard deviation, %) in tuber samples for the different
treatments, years and locations
Treatment
Control
Oil + Insecticide
Oil
Insecticide
Location
Ardenne
Famenne
Condroz
Ardenne
Famenne
Condroz
Ardenne
Famenne
Condroz
Ardenne
Famenne
Condroz
1998
11.7 ± 1.5
5.7 ± 1.1
19.7 ± 3.3
4.7 ± 0.6
0.7 ± 0.6
6.7 ± 1.5
4.3 ± 0.6
1.2 ± 0.6
5.0 ± 1.0
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113
1999
20.3 ± 4.7
27.0 ± 3.5
20.0 ± 5.2
4.7 ± 1.1
10.3 ± 1.5
6.0 ± 1.0
8.7 ± 1.1
8.7 ± 0.6
8.7 ±2.3
15.3 ± 1.1
30.7 ± 7.6
15.3 ±2.3
2000
41.0 ± 6.2
44.3 ± 6.7
47.7 ± 3.1
4.7 ± 1.1
7.0 ± 3.6
8.7 ± 2.5
8.3 ± 3.8
15.0 ± 3.0
8.7 ± 1.5
A mixed, partially nested, 3 ways ANOVA was performed considering the factors
“Treatments” as fix, “Year x Location” as random and “Block” as random and nested to the “Year x
Location” factor. “Treatments” was tested against the interaction “Treatment” x “Year x Location”.
The results showed that, globally, there wasn’t a significative difference between the
treatments (F(1,8)=3.07; p=0.12). The addition of the insecticide Mavrik B in the protection scheme
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