Field experiments were conducted during rabi seasons of 1992 1993, to 1994 -1995 to study the effect of different N sources with various levels on the oil yield and soil fertility of palmarosa in vertisol under rainfed condition. The application of urea at 75 kg ha registered the highest herb yield (10,606 kg ha") and oil yield (392 kg ha'). The combined application of organic (FYM) and inorganic(urea) fertilisers to supply N in equal proportion at 100 kg ha" recorded the maximum oil recovery. Reduction in the herb yield was observed with the application of organic N source, The application of 75 kg N ha recorded the highest available nutrients viz.. N. P. and K in the soil.
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