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PLASMO: a simulation model for control of Plasmopara viticola on grapevine 1
Author(s) -
ORLANDINI S.,
GOZZINI B.,
ROSA M.,
EGGER E.,
STORCHI P.,
MARACCHI G.,
MIGLIETTA F.
Publication year - 1993
Publication title -
eppo bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.327
H-Index - 36
eISSN - 1365-2338
pISSN - 0250-8052
DOI - 10.1111/j.1365-2338.1993.tb00559.x
Subject(s) - plasmopara viticola , downy mildew , sporangium , biology , spore , vitis vinifera , botany , environmental science , horticulture , agronomy
The problem of protecting grapevine against diseases is an old one, but in the last few years new techniques have been developed to reduce cost to the farmer and damage to the ecosystem. These are based on mathematical models describing the state of the plant‐parasite environment system. A model for forecasting development of grapevine downy mildew ( Plasmopara viticola ) is presented. The input variables are temperature, rainfall and leaf wetness (determining infection by sporangia), and RH and temperature (for incubation period). The model also takes into account the limited survival of spores. The output is expressed as %, disease progress. Field validation tests, performed in 1990, 1991 and 1992 in several vineyards in Toscana (central Italy) showed a good correlation between observed and simulated infections. The model allowed the number of treatments to be reduced without any increase in downy mildew damage. It could in future be integrated with grapevine growth and development simulation models in an expert system to determine infected tissue area and thus the economic damage threshold.