Production performance of leguminous forage shrub Indigofera amblyantha cv. 803 in Guizhou karst mountain area

Indigofera amblyantha Craib cv. 803 is a new legume forage shrub cultivar bred by Guizhou Institute of Prataculture. It was bred from wild I. amblyantha using multiple individual choice method for years. Based on the region adaptive evaluation on the growth and production performance of I. amblyantha cv. 803, the annual hay yield and seed yield of I. amblyantha cv. 803 were 12.74 and 1.92 t·ha-1, respectively, which were 13.75%, 16.56% and 15.70%, 11.60% higher than wild I. amblyantha and I. amblyantha cv. erxi, respectively; the crude protein content varied from 17.58% to 19.04%. It is an excellent leguminous forage shrub for grassland improvement and pasture planting in the tropical and the subtropical area. It is also a good choice to control soil and water loss in the karst mountain and push forward rocky desertification comprehensive management process and can be popularized widely.