Pistachio nut diffusion in Spain: Growth models

Aim of study: To analyse the diffusion crop by producing forecast models, that intend to help farmers in their decision-making.
 Area Spain. The area dedicated pistachio cultivation Spain has multiplied 36 period 2010 2020, reaching 44,244 ha.
 Material and methods: This study brings together data on evolution based following parameters: cultivated area, yield, price. Methods are internal, external influence models an influence-price-crop yield pattern.
 Main results: results indicate given a constant raising prices, will bring production increase generate saturation level system. Similarly, with price increment system increases. Regarding pattern influence, it is shown context suitable market prices for optimal synergy factors favour not only increases but also duration process.
 Research highlights: curve sigmoidal well-defined inflection point three phases. adoption responds model internal (logistic) never influence. According results, process zero-innovation effect, while dynamics completely determined imitation effect.