The advantage of Decision Support System for managing spring barley disease in Estonia
Laen...
Kuupäev
2017
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
A Decision Support System (DSS) I
-
Taimekaitse focusing on use of timely applied
and reduced fungicide rates in control of
cereal diseases has been tested in field trials since 2003
.
We compared the conventional treatment and the DSS
-
based spray practices in 18 field trials in
five agricultural locations over 7
-
year period. Efficacy of the control of net blotch
caused by
Pyrenophora teres
(Drechsler, am
Drechlera teres
Sacc. Shoem), the main fungal disease
in
spring barley has been tested to determine the economic advantage of DSS use. Compared with
the conventional spray practices, the advantage
I
-
Taimekaitse
resulted in
reduction of application
doses by 30 to 60% of the registered rate. According to
I
-
Taimekaitse
, the fungicides were applied
mainly between heading and flowering growth stages (GS 55
–
65), whereas
traditional routine
spraying is commonly made at booting (GS
37
–
49)
.
The experiment clarifies the cost
-
benefit of
using DSS
-
based approach in barley disease management with average yield increase above the
control in 12.8% and above the conventional treatment in 14.1%. I
-
Taimekaitse
gave competitive
disease control
and average
yield output reduction compared with conventional practice by 9%.
In general the Treatment Frequency Index applied in conventional treatment was 0.65 and in DSS
0.41. Although the cost of treatment expense in
DSS was
20% less compared with conv
entional
practice, the performance of conventional used spray practices
was
outstanding in economic
return.
Kirjeldus
Article
Märksõnad
decision support system, economic return, fungicide, net blotch, spring barley, articles