Negi, M.S.Verma, Himanshu2019-07-312019-07-312019-05http://krishikosh.egranth.ac.in/handle/1/5810118115A field experiment was conducted during kharif seasons of 2017-18 and 2018-19 at Medicinal Plants Research & Development Centre (M. R. D. C) of the G. B. Pant University of Agriculture & Technology, Pantnagar, District Udham Singh Nagar (Uttarakhand) to study the effect of organic manures and fertility levels on yield, quality, N, P & K contents, and uptake and economics of the kalmegh [Andrographis paniculata (Burm. f.) Wall. ex Nees]. The soil of the experimental site was sandy clay loam in texture having high organic carbon, low available nitrogen, high available phosphorus and medium in exchangeable potassium with slightly alkaline in reaction. The experiment was laid out in split plot design with three levels of organic manure and four fertility levels replicated thrice. The organic manures [no organic manure (control), vermicompost @ 5 t/ha and poultry manure @ 5 t/ha] were taken in main plots while the fertility levels [0: 50: 50, 50: 50: 50, 75: 50: 50 and 75 (37.5 + 37.5): 50: 50 kg N, P2O5 and K2O per hectare] were taken in the sub plots. Application of the organic manures and fertility levels influenced the growth characteristics, yield attributes, quality and economics of the crop significantly during both the years of experimentation. Significantly higher dry herbage and andrographolide yields were recorded with application of vermicompost @ 5 t/ha along with 75 kg N/ha in two splits during both the years of study. The highest net returns were recorded with application of vermicompost @ 5 t/ha along with 75 kg N in two splits per hectare followed by poultry manure @ 5 t/ha along with 75 kg N in two splits. On the basis of the two years study, it can be concluded that vermicompost shall be applied @ 5 t/ha along with 75 kg N/ha in two splits (37.5 kg as basal + 37.5 kg as top dressing at 25 days after transplanting), 50 kg P2O5 and 50 kg K2O per hectare for getting higher herbage yield of kalmegh along with quality in terms of andrographolide yield and higher net return.ennullThesis