Effect of potassium acetate of different concentrations on drying speed and nutrient quality of alfalfa

Content of water, crude protein(CP), neutral detergent fiber(NDF), acid detergent fiber(ADF), general energy (GE) of alfalfa were measured after drying, A various concentration of potassium acetate (CK:0, C1:0.5%, C2:1%, C3:1.5%, C4:2%, C5:2.5%, C6:3%) was sprayed on these plants in early flowering. The results showed potassium acetate increased the drying rate and improve the nutritional quality, as decreasing ADF (P＜0.05) and increasing GE (P＜0.05) except C6. C2 was considered as the best treatment since it increased CP to highest, and decreased NDF to lowest (P＜0.05).