Archives

The present investigation entitled “Effect of liquid formulation of Azotobacter and PSB inoculation on growth and yield of lettuce (Lactuca sativa L.)” was carried out at Department of Plant Pathology, College of Agriculture, Punein viewto study the population dynamics of Azotobacterand PSB at periodic interval, their effect on growth parameters and nitrogen uptake by lettuce crop. There were seven treatments, including seed treatment with liquid Azotobacterand liquid PSB @ 25 ml/kg of seed; Foliar spray of liquid Azotobacterand PSB @ 25ml/lit, in alone and in combination; respectively. Results revealed significantly improved crop growth and better soil biochemical properties over uninoculated control. The higher seed germination per cent (84.44%) recorded in seed treated with liquid Azotobacter + PSB.It also revealed beneficial effects on biological properties. There was found highest Azotobacter and PSB population at growth stage while decreased at harvesting stage. Considering all these parameters, it could be concluded that liquid Azotobacter and PSB improved soil biochemical properties which may ultimately influence the growth of lettuce.
Keywords: Azotobacter, PSB, Population.