Supplementary material to "A novel analytical approach for the simultaneous measurement of nitrate and DOC in soil water"

Abstract

The open crop field and citrus orchard sites are located next to the village of Nir Galim in Israel (34°41`13`` E long; 31°49`42`` N Lat). Over the past 10 years, the crop field has been used for rainfed winter cereal and summer watermelon cultivation, fertilized mainly with dairy slurry manure. In 2015, the field was converted to irrigated jojoba cultivation. The citrus orchard is irrigated during the summer, in addition to the rainfall during the winter. Further information on these sites may be found at Turkeltaub et al., (2014). The additional study sites were two greenhouses used for rotating vegetable crops. One site practiced an organic regime that is based on the application of organic compost as the main fertilizer, while the other applied conventional fertigation methods. A detailed description of the VMS at each site was previously presented in Dahan et al., (2014);Turkeltaub et al., (2014 Turkeltaub et al., ( , 2015aTurkeltaub et al., ( , 2016. Additional samples were taken from an open field located next to Kibbutz Afek (32°50'14.7"N 35°07'28.6"E).