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

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Chapter 8<br />

80<br />

70<br />

60<br />

%of supply<br />

%of acreage<br />

% of total<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

Protected crops<br />

Field vegetables<br />

Grapes<br />

Fruits<br />

Field crops<br />

Gardens, ornamentals<br />

Figure 12: Estimated distribution of bio<strong>control</strong> use among types of crops in 2008 in Europe<br />

Survey results: Factors of development of bio<strong>control</strong><br />

The exploitation of the questionnaires was somewhat difficult due to the large variety of farmers<br />

<strong>and</strong> situations. Additionally, several open ended questions were introduced to collect opinions on<br />

possible additional gaps <strong>and</strong> opportunities which were not mentioned in the form.<br />

Qualitative analysis. In a first step, the analysis of the responses led to the identification of 12<br />

factors deemed to have a significant influence on the future development of <strong>biological</strong> <strong>control</strong><br />

Nine factors with a positive influence:<br />

o Ability of manufacturers to invest in R&D<br />

o Financial strength of manufacturers<br />

o Direct involvement of leading distributors<br />

o Pull from the fresh food wholesalers <strong>and</strong> from the food industry<br />

o Dem<strong>and</strong> from consumers <strong>and</strong> NGOs<br />

o Incentives given to growers<br />

o Education of advisors <strong>and</strong> growers<br />

o Availability of Decision Support Systems (DSS)<br />

o Regulatory obstacles to chemical pesticides<br />

Three factors with a negative influence:<br />

o Regulations not adapted to Biological <strong>control</strong><br />

o Discovery of novel effective <strong>and</strong> safe chemicals<br />

o Development of new resistant crops<br />

Quantitative analysis. In a second step, a quantitative analysis was conducted to estimate the<br />

influence of the identified factors. For this, 320 contacts (50% of the sample) were requested to<br />

65

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