Effects of Differentiated N Rates on Botanical Composition and Dry Matter Production of herbage in White Clover ( Trifolium repens )/ Grasses Sward under Grazing Ultilization
The more N fertilizer, the more grass proportion (58 8, 240 kg N/ha) and the less white clover (Trifolium repens) (6 %, 240 kg N) under grazing utilization. The proportion of white clover was maintained about 27 % at 60 kg N/ha/yr and weed proportion was