BBAuthors: Weissman, G.; Advisor: -; Participants: Bel, G.; Ben‐Gal, A.; Yermiyahu, U.; Alexandrov, B.; Rasmussen, K. Ø.; Dahan, O. (2020)
Excessive use of N fertilizers in agriculture often leads to NO3− accumulation in the unsaturated zone and to groundwater pollution. There is uncertainty regarding the variability in fertilizer transport and uptake efficiency due to the lack of studies based on continuous nondestructive measurements in unsaturated soils. In this study, we analyzed solute dynamics across the unsaturated zone underlying cultivated agricultural fields. Commercial crop rotations under four treatments, comprising two N fertilization regimes and two irrigation water salinity levels, were conducted in loess soil in the semiarid climate of the northern Negev Desert, Israel. The impact of the various treatment... 
