Table 1. Characteristics of the study site


Precipitation approx. 90 mm, annual average potential evapotranspiration approx. 1,500 mm (Conrad 2006)
Soils Medium and heavy loam soil textures prevailing, clayey light loam and sandy loam soils less widespread, approx. 50% of soils moderately or strongly saline (Ibrakhimov et al. 2007)
Crops Main crops in summer are cotton and rice, in winter, spring wheat; all crops irrigated either with basin or furrow irrigation
Villages Ortayop and Uyghur with approx. 5900 and 5000 residents, respectively. The majority of the population involved in agriculture either as private farmers, peasants, workers on private farms, or a combination of the latter two.