The questionnaires were circulated to farmers to identify individual
field or farm characteristics. Questionnaire 1 was centrally
distributed by NE and designed to record site details in terms of soil
water availability and fertility to understand site selection criteria
and local yield formation. As feedback from farmers on questions
regarding soil, climate and site hydrology was rare the simplified
Questionnaire 2 was distributed by NE as well as being sent directly
to farmers who had provided their addresses. Questionnaire 3 was
further complemented with feedback reports to communicate results
and prepare for personal interviews with backgrou