Groundwater dynamics and quality under intensive cropping systems

abonos nitrogenados agriculture intensive agua de riego agua potable arroz calidad del agua capsicum capsicum annuum cropping systems denitrification drinking water eau d'irrigation eau potable eau souterraine electrical conductivity groundwater groundwater table intensive farming irrigation irrigation water nappe souterraine nitrate nitrates nitratos nitrogen fertilizers pozos puits rice riego riz sistemas de cultivo water quality wells