Integrated Management of Fruit Flies in India (IMFFI) “Key Informant Survey” of Production, Value, Losses and Protection of Fruit Fly Hosts in India Workplan and Data Sheets John Stonehouse, Imperial College London Dear Colleague, The objective of the IMFFI Key Informant Survey is to obtain estimates, across the whole of India, for the following values:- - Production of fruit fly hosts, divided among the major agro-ecological zones - Farm-gate prices of fruit fly host produce - Losses to fruit flies, host-by-host and zone-by-zone, both with and without fly controls - Incidence of controls, host-by-host and zone-by-zone - The relative incidence of the major pest species in causing losses, separately for the two categories of orchard fruit and cucurbit vegetables Preliminary estimates have now been obtained and are being circulated, and all recipients are requested to comment on them. The idea is that the numbers so far will be looked at by everybody, they will comment, and then the revised numbers will be progressively improved. Please discuss these as widely as possible with colleagues and associates, and derive what, in your view, are more appropriate or more accurate values, and transmit your corrections to Dr John Stonehouse, IMFFI Project Manager, Imperial College London, UK (fax 00-44-1947-841189; e-mail
[email protected]). The principle of this circulating request is that the estimates will become gradually more accurate as more and more refining opinions are received and absorbed. It thus uses the principle of Bayesian algebra, in which successive estimates, subjective if need be, are used to refine and improve each other, and of Delphi consultations, in which opinions are circulated anonymously and discussed among a group.