Vol. 75 No: 5

Title:
Herbage and oil yield of geranium influenced by irrigation, nitrogen and organic mulch grown on alfisol

Author:
MUNNU SINGH

pp: 528-532

Abstract:
Two field experiments during 1996-98 at Bangalore, India studied the effect of soil moisture regimes (0.3, 0.6 and 0.9 IW:CPE ratios) irrigation water:cumulative pan evaporation (IW:CPE) ratios and three levels of nitrogen application (0, 100 and 200 kg ha^-1). Another experiment investigated three irrigation levels (0.3, 0.6 and 0.9 IW:CPE ratios), two levels of nitrogen application (100 and 200 kg ha^-1) and organic mulch (0 and 5 t ha^-1) on oil content, herbage, oil yield and quality of geranium grown on alfisols. Soil moisture maintained at 0.6-0.9 IW:CPE ratios significantly increased both the herbage and oil yields of geranium. Application of 200 kg N ha^-1 gave maximum herbage and oil yield compared with those obtained from 0 and 100 kg N ha^-1. Organic mulch increased the oil yield of geranium. The concentration and quality of essential oil were not influenced either by soil moisture regime, N rates or organic mulch.

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