Allelopathic effects of proso millet (Panicum miliaceum L) extracts on seed germination and seedling growth of alfalfa and vetch

In greenhouse experiment, we evaluated the allelopathic effects of different concentrations of shoot, root and biomass (shoot+root) extracts of pure and intercropped Proso millet (Panicum miliaceumL., var. Mizao 52) on seed germination and seedling growth of Common vetch (Vicia saliva L. var. Lanjian No.3) and Alfalfa (Medicago saliva var. WL168HQ). The millet residues extracts decreased the seed germination and seedlings growth (radical length, and plumule length) of test crops over control. All test crops showed similar responses of seed germination and seedlings growth in interactions of different types and different concentrations of all residue's extracts. The shoot, root, and biomass residue extract of proso millet inhibited the seed germination and seedlings growth of the recipient crops. Therefore, sowing of common crops like vetch and alfalfa on fields after previous proso millet should be avoided.