A winter wheat with root excision was chosen to determine whether 1) root biomass or R/S (root/shoot ratio) is reduced by root excision, 2) competitive ability is reduced by root excision and its link with R/S and 3) competitive ability influences crop production.

Fluorescence quenching was adopted to probe the effects of root excision on fluorescent properties as well as on the yield of winter wheat under different moisture circumstances.

Holland Snowball was studied by the way of removing leaves,cutting root and connolling conditions of different fertility and water.

The effects of different cutting roots and fertilization measure on soil nutrient,microbe quantity and enzyme activity both rhizosphere and non-rhizosphere soil in I-107 poplar plantation were studied by field plot experiment.

Study on the Growth and Roots Regeneration of Ginkgo after Root-cutted with the Treatment of Fertilization in Urban Landscape;

The root system of six-year-old Chinese jujube trees were manually cut with a sharp spade at 3,5 or 7 times trunk diameter distance along both inter-row sides prior to buds break on April 26th2008 in Binzhou Chinese jujube orchards,to study the effects of root cutting on the vegetative growth.