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Classical and augmentative biological control against ... - IOBC-WPRS

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List of Tables (continued)<br />

Table 17:<br />

Table 18:<br />

Table 19:<br />

Table 20:<br />

Table 21:<br />

Compared margin structure estimates for the production <strong>and</strong> sales of a<br />

microbial bio<strong>control</strong> agent (MBCA) <strong>and</strong> a chemical pesticide (source IBMA)....................61<br />

Production systems selected for a survey of factors influencing bio<strong>control</strong> use<br />

in Europe (source IBMA) ............................................................................................63<br />

Geographical distribution of sampling sites for a survey of factors influencing<br />

bio<strong>control</strong> use in Europe (source IBMA) .......................................................................63<br />

Structure of the questionnaire used in a survey of European farmers <strong>and</strong><br />

retailers of <strong>biological</strong> <strong>control</strong> products...........................................................................64<br />

Impact of twelve factors on the future use of bio<strong>control</strong> agents by European<br />

farmers according to a survey of 320 farmers .................................................................66<br />

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