Identification of environmental variables

The objective of this task is to obtain a set of environmental variables collected from the study sites

The following environmental variables will be obtained:

1. Management practices:(i) number of pesticide applications per year,(ii) number of fertilizations per year,(iii) conventional tillage or conservation tillage.

2. Pest population levels.

3. Soil properties:(i) determination of soil pH (in 1M KCl and water 1:6 v:v),(ii) moisture content (dried overnight at 105ºC) (iii) carbon content (iv) nitrogen content and (v) organic matter.

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