Effects of varions planting techniques and biofertilizer application on growth and nutrient uptake of Valeriana jatamansi: Valuable medicinal herb of Himalaya range

摘要

An experiment was carried out during the year of 2010 - 2014 at Regional Research Station, under the aegis of Uttar Banga Krishi Viswavidyalaya, Kalimpong (1265 m asl) to evaluate the effect of different planting methods and biofertilizer applicationon physiological growth and economical yield of Valeriana jatamansi, under the mid hill condition of West Bengal. Present investigation was conducted in split plot design with three replication, having four methods of planting in main plot and differentsources of biofetilizer (eight treatments including control in sub plot. Observation revealed that, ridge method of sowing produced notable higher fresh biomass production throughout the growth phase and signif cantly better to other method of planting at ail stages of data recording except at 18 month stage. With biofertilizers, more aerial biomass was registered with the azotobactor + VAM + PSB (@ 2+2+2 g/plant), and was at par with the VAM + PSB (@ 2+2 g/plant) at 6, 9 and 12 month stage. Undergroundbiomass gave significant response with various main plot actions, ridge planting gave more biomass production at ail stage of data recording. More fresh underground biomass registered with the incorporation of azotobactor + VAM + PSB (@ 2+2+2 g/plant) at ail stage of data recording except 18 and 21 month. Increase fresh rhizome yield was noticed with the ridge method of planting and notably better to ail the treatment under main plot except at 15 month old crop, and was at par with the furrow sowing at24 month stage. Under subplot treatments, application of azotobactor + VAM + PSB (@ 2+2+2 g/plant) gave more rhizome yield except at 21 and 24 month stage, and was at par with the azotobactor + PSB (@ 2+2 g/plant) at 9 month and with azotobactor + VAM (@ 2+2 g/plant) during 9 and 12 month old crop. More root yield reading was found with the ridge sowing. Amongst various biofertilizers incorporation, under subplot more root yield was registered with the azotobactor + VAM + PSB (@ 2+2+2 g/plant) except at 24 month, and was at par with the VAM + PSB (@ 2+2 g/plant) from 15 to 24 month stage of crop. Nutrient uptake pattern and concentration was found to be superior with ridge sowing methods compare to rest of the main plot treatments. Amongst sub plot treatments, combine incorporation of biofertilizer gave more yield and more nutrient ab-sorbed from the soil. Above experiment depict that, utmost plant physiological growth was observed with ridge sowing along with application of azotobactor + VAM + PSB (@ 2+2+2 g/plant) under mid hill situation.