A pot experiment was conducted to study the effect of root cutting on water use efficiency (WUE) of millet. The results showed that moderate root cutting at the seedling stage improved the WUE of leaf, while severe root cutting at the seedling state or any root cutting at the elongation stage or booting stage reduced the WUE. The root cutting treatments improved the WUE for biomass at harvest except the "TM" and "sl" treatments. at the 80% field capacity, root cutting did not significantly affect WUE for gr...
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