| Abstract: | The influence of N-dimethylamino succinamic acid (B-nine) on lucerne plants cv. IGFRI-244 was investigated. B-nine (a growth regulant) was sprayed as a foliar sprays, employing 10, 100, 250, 500, 1000 and 5000 ppm alongwith water spray as control, and the effects were observed on plant growth, flowering, nutritive constituents and seed yield of the crop. Plant height was reduced from 6.19 to 26.85 % in various concentrations of B-nine being highest retardation in 5000 ppm, whereas 250 ppm produced more branches and leaves with dense foliage in comparison to control and other treatments. Delayed flowering by 2–15 days with significant increase in seed yield and 1000 seed weight B-nine bein maximum seed yield in 250 ppm. However, total seed yield was increased by 4.16 to 24.76 per cent over unsprayed control plants. Among the treated levels of B-nine, 250 ppm also gave higher values for Carbohydrate, IVTDMD in shoot of lucerne plants with considerable decreased in 5000 ppm. NDF condent decreased progressively with increased concentration of B-nine but always lesser than the value of IVTDMD. |
