Fig. 3.

Relative yield and WUE of recommended deficit irrigation methods on field crops in China. The relative parameter is the ratio of yield and WUE under the recommended deficit irrigation method to that under the conventional method. AN asterisk indicated a significant difference for the data under the recommended deficit irrigation compared with the control. The fraction of the conventional method is given for each column. Shaded and unshaded columns indicate the relative parameters minimum and maximum data since the experiments were conducted for two or more years. Study numbers and details are listed in Table 1.