Tonga field trials data: Salt tolerance of taro and yam

Data from two field experiments in Vaini, Tonga. For Experiment 1, we grew one taro cultivar (Colocasia esculenta cv. huli mama’o) with irrigation treatments: rainfall only, groundwater (<1 dS/m), low salt (3–4 dS/m), and high salt (6–7 dS/m). For Experiment 2, we grew two yam cultivars (Dioscorea cayenensis ssp. rotundata cv. lose and Dioscorea alata cv. kahokaho) underneath rain shelters under two treatments: groundwater and high salt. Fresh weights, dry matter content, leaf number and size, chlorophyll concentration, stomatal conductance, macro- and micro-nutrients, and soil salinity were measured.