2023, Vol. 8, Special Issue 2

This research was aimed to find out the Impact of Bio-fertilizers & Bio-stimulant on vegetative growth parameters of African Marigold (Tagetes erecta L.), which was carried out in summer 2017 at experimental site of Department of Plant Physiology, IGKV, Raipur (CG) with Completely Randomized Design (CRD) along with three replications. These studies find the effect of humic acid combination with Azospirillum and Phosphorus Solubilizing Bacteria (PSB) on vegetative growth parameters of marigold. Eight treatment viz. Control, Azospirillum @ 25 ml/l., PSB @ 3 ml/l., Humic acid @ 2000 ppm, Azospirillum (25ml/l.) + PSB (3ml/l.), Azospirillum (25ml/l.)+ Humic Acid (2000 ppm), PSB (3ml/l.) + Humic Acid (2000 ppm) and Azospirillum (25ml/l.) + PSB (3ml/l.) + Humic Acid (2000 ppm). The bio-fertilizers applied at the time of transplanting by seedling dip treatment upto 25 minutes and foliar spray of humic acid at 30 DAT.

Results revealed that bio-fertilizers and bio-stimulants increases growth parameters like plant height, Number of leaves/plant, Number of branches/plant. Mean comparisons revealed that treatment with Azospirillum (25ml/l.) + PSB (3ml/l.) + Humic Acid (2000 ppm) and Control has maximum plant height, No. of leaves and No. of branches/plant respectively.