Effect of combined doses of nitrogen and phosphorus on plant growth and oil yield of menthol mint (Mentha arvensis L) in western Himalayan region of Uttrakhand

Abstract

The experiment was laid out in randomized block design with three replication at CSIR-Central Institute of Medicinal and Aromatic Plant Research Centre Purara, Bageshwar (Uttrakhand) during 2014-15 with the objectives to study the effect of different level of combined doses of nutrients, viz. nitrogen and phosphorus on herb and oil yield of menthol mint. The treatments combination is five combined doses of nitrogen and phosphorus, viz. T1 (control, N0 P0), T2: N50 P20, T3: N100 P40, T4: N150 P60, T5: N200P80. Result indicated that the better expression of plant growth and oil yield characters was observed in T5: N200P80 followed by T4: N150 P60.