Tag Archives: Root Rot Fungi

Varietal Resistance of Sunflower and Okra Bio-Primed Seeds Against Root Infecting Fungi and Establishment of Crop Plants (Published)

Okra (Abelmoschus esculentus L.) varieties like OH-152, Arka anamika and unknown variety and sunflower (Helianthus annuus L.) varieties like S-278, Hysun-39 and unknown variety after bio-priming with leaf extracts of Acacia nilotica (L.) Willd. ex Delile Sapindus mukorossi (L.) and microbial antagonists (Trichoderma harzianum and Rhizobium meliloti) at different time intervals (10, 20 minutes) were screened against root infecting fungal pathogens (Macrophomina phaseolina, Rhizoctonia solani and Fusarium spp) and growth of crop plants. Results obtained showed that among all the three varieties of sunflower, variety S-278 after bio-priming with A. nilotica leaf extract for 10 minutes and T. harzianum conidial suspension for 20 minutes was found to be most effective for the establishment of plants and completely control the colonization of M. phaseolina followed by Hysun-39 and unknown variety. Whereas in case of okra, variety OH-152 after bio-priming with A. nilotica leaf extract, T. harzianum and R. meliloti cell/conidal suspension for 10 minutes was recorded to be most effective for the complete inhibition of M. phaseolina and significant elevation of growth of plants followed by A. anamika and unknown varieties

Keywords: Bio-priming, Okra, Root Rot Fungi, Varieties, sunflower

Fungicidal Potential of Homeopathic Pellets in the Inhibition of Root Rot Fungi and For Promotion of Crop Plants Productivity (Published)

Root rot pathogens cause heavy economic damages in agricultural field. The aim of this research is to evaluate the fungicidal efficacy of potentised homeopathic pellets (30C) namely Arnica montana and Thuja occidentalis on germination, growth, yield of crop plants and root rot fungi particularly Fusarium spp, Rhizoctonia solani and Macrophomina phaseolina. Homeopathic pellets were found to be effective in inhibiting the mycelial growth of test fungi in vitro experiment. Whereas, investigation in vivo field experiment showed that A. montana and T. occidentalis pellets @ 75% v/w concentration (prepared from 30C) remarkably control the pathogenic fungi and significantly enhanced the growth parameter and yield of crop plants followed by 50% v/w concentration (prepared from 30C) as compared to control. Experiments have shown positive effect in reducing the intensity of disease caused by root rot pathogen and improve the growth of crop plants.

Keywords: Concentrations, Homeopathic Pellets, Inhibition, Leguminous and Non Leguminous Crops, Root Rot Fungi