S T U D I E S ON THE E F F E C T S OF WEATHER P A R A M E T E R S ON I N C I D E N C E OF POWDERY M I L D E W ( U n c i n u l a necator ( S c h w . ) B u r r O N G R A P E S ( V i t i s vinifera L. )
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Date
1992
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Publisher
mpkv, rahuri
Abstract
The experiment entitled, "Studies on the effects of weather parameters on
incidence of powdery mildew (Uncinula necator (Schw.) Burr.) on grapes (Vitis
vinifera L,)'\ was conducted during the post-monsoon season of the year 1990-
91. Five compartments, each consisting of nine vines, were erected with the help
of transparent polythene sheet and wooden frame and were irrigated at an
interval of 4, 8, 12, 16 and 20 d in order to create varying microclimatic
conditions in these compartments. The temperatures, within the canopy of vines,
in different compartments were recorded continuously by thermocouples and
relati\ v humidity, within the canopy, was recorded by thermocouple
psychrometer. Biological observations on per cent incidence of powdery mildew
on berries (% IN), spore load on berries (SL)( and per cent disease intensity on
leaves (PDI), were recorded at an interval of 3 d.
Description
msc
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