Page 16 - Volume 5, Issue 1, January 2012
Basic HTML Version
© Benaki Phytopathological Institute
La Torre
et al.
14
low rate copper formulations was estimated
against grape downy mildew.
Materials and Methods
Experimental trial
The experiment was conducted in 2010
in an organic vineyard near Rome (lat.
41.4°N, long. 12.3°E, 180 m a.s.l.). The grape
variety tested was Malvasia di Candia, and
the rootstock (44 years old) employed was
Kober 5BB (
Vitis berlandieri
x
Vitis riparia
). The
training systemwas “tendone”, consisting of
a continuous overhead canopy under which
the bunches are disposed (25). Plots were
prepared, each containing 12 plants and
repeated four times in randomized blocks.
Spacings between vines were 2.50 m x 2.50
m, with a buffer row between treatments.
The test organism was
P. viticola.
Products were sprayed until near run-off
with a pulled sprayer (Martignani K.W.H. elec-
trostatic sprayer system) at a pressure of 1.5
bar. The trial was carried out in accordance
with the EPPO/OEPP PP1/31 (3) guidelines (11).
Environmental data
A weather station was placed at the trial
site to record weather data such as precipita-
tion, air temperature, soil moisture (at a depth
of 20 cm and 40 cm), leaf wetness, solar radi-
ation, relative humidity, soil temperature, and
wind speed and direction. These data were ac-
quired through the GSM modem that was on
board the weather station for remote trans-
mission to a WeatherLink software program.
Treatments
Table 1 reports commercial name of test-
ed products, commercial manufacturers,
composition, active ingredient, rate of appli-
Table 1.
Commercial name, active ingredient, dosage and number of applications of the
products tested against grape downy mildew.
Treatment
Commercial
name
Manufacturer
Composition
Active
ingredient
(%)
Rate of
application
Number of
applications
/treatment
RP
a
Bentoram Dal Cin Gildo (IT)
Copper hydroxide
10
2-3-4
b
13
Cuproxat SDI
Nufarm Italia(IT)
Tribasic copper sulphate 15.2
3
b
1 Labicuper
Labin Italia (IT)
Copper gluconate
8
2-2.5
b
10
2 Glutex Cu 90 Socoa Trading S.r.l. (IT)
Copper hydroxide
9
4-4.25
b
11
3
Biplantol agrar
Plantosan (CH)
Homeopathic preparation -
1
b
6
Biplantol my-
cos V forte
Plantosan (CH)
Homeopathic preparation -
1
b
5
4 Sporatec Brandt Consolidated (US) Rosemary Oil - Clove Oil -
Thyme Oil
18-10-10 1
c
14
5 Myco-Sin VIN Andermatt Biocontrol
(CH)
Aluminium sulphate
75
0.5
c
11
6
BM-608
Biomor (IL)
Malaleuca alternifolia
es-
sential oil
23.8
0.75
c
13
7 Stimulase
Agronutrition (FR)
Purified enzymes extract-
ed from
Trichoderma
sp.
-
1
b
8
a
Reference product (Standard)
b
l/ha
c
%
