• Nivedita Sharma

Harnessing disease suppressive micro-organisms to improve plant health is bio-control. Due to the shortage of available fungicides for proper management of fungal diseases, alternative techniques such as biological control are increasingly being utilized for disease management. Future prospects of biocontrol of plant diseases are bright and promising and with the budding demand for biocontrol products among the growers, it is possible to use the biological control as an effective strategy to manage plant diseases. The present piece of work was carried out to study the potential of fungi Trichoderma harzianum isolated and screened from the rhizospheric soil of some Hippophae salicifolia D.Don (Seabuckthorn) growing areas of Uttarakhand. Antagonistic activity of Trichoderma harzianum was observed against Alternaria alternata causing leaf spot disease in seabuckthorn. Under in vitro conditions Trichoderma harzianum significantly reduced the growth of pathogenic Alternaria alternata. This is the first report of Trichoderma harzianum, isolated from the rhizosphere of the diseased plant i.e seabuckthorn itself and being utilized as bio control agent against leaf spot disease on seabuckthorn, which is considered as a magical plant of the Garhwal Himalayas, which open up the new horizons for eco-friendly method of disease management among seabuckthorn growers in Uttarakhand, India.

Antagonistic, biocontrol, disease, isolate, rhizosphere, soil.

"First Report of Trichoderma harzianum as an effective bio-control agent against Leaf Spot Disease of a Wonder Plant (Seabuckthorn) in Uttarakhand", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 9, page no.b143-b149, September-2022, Available :http://www.jetir.org/papers/JETIR2209120.pdf

"First Report of Trichoderma harzianum as an effective bio-control agent against Leaf Spot Disease of a Wonder Plant (Seabuckthorn) in Uttarakhand", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 9, page no. ppb143-b149, September-2022, Available at : http://www.jetir.org/papers/JETIR2209120.pdf