Effect of different bio-fertilizers and its various combinations on root characters and economics of marigold

An investigation was carried out to study the effect of different bio-fertilizers and its various combinations on seed characters and economics of marigold cv. Pusa Narangi Gainda at the Horticulture Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, U.P. during 2015-16 and 2016-17 and pooled data of both the years of experiments are taken. The experiment was laid out in randomized block design comprising sixteen treatment combinations replicated thrice. The treatments comprised of NPK, N2 fixer (Azotobactor), PSB (Pseudomonas and Bacillus polymyxa) and FYM. On the basis of data, for root characters T14 resulted maximum number of fibrous roots/plant (410.41) whereas, maximum root diameter (2.37 cm), root length (21.26 cm), fresh weight of roots (29.53 g) and dry weight of roots (8.01 g) were resulted in T15. Regarding the economics of marigold maximum total cost (Rs. 94722), gross income (Rs. 239599.57), net income (Rs. 144877.56) and C:B Ratio (1:1.53) were resulted by T15.