Bio-control technology: Development, production and popularization for plant disease control in semi-arid region of Rajasthan, India- A success story
2012
Gaur, R B | Sharma, R. N.
The first bio-agent production unit of the state was established at this research station in 1995, funded by the DBT, Govt. of India. Initially exotic isolate of Trichoderma harzianum (Th-8) was used for mass production but latter on a potent native strain of T. harzianum (TG-1) was substituted for commercial production of bio-agent. Systematic studies (1995–2010) were conducted to evolve several biocontrol technologies like, suitable substrates for Trichoderma multiplication, shelf-life of talc based formulation of Trichoderma, delivery system of antagonists to seed, soil and paint formulation, dry root rot control in chickpea using Khejri based production system, development of new consortium formulation of bioagents and compatibility of bio-agents with fungicides. Several recommendations were provided for successful biocontrol of plan diseases like root rot of chickpea and cotton (Rhizoctonia bataticola), Sclerotinia stem rot of mustard (Sclerotinia sclerotiorum), Phytophthora rot/gummosis (Phytophthora spp.), canker (Xanthomonas axonopodis pv. Citri) and fruit dropping in Kinnow. These technologies were transferred to cultivators systematically through front line, field and IPM based demonstration. Since establishment of bioagent production unit, a total of 9855 kg of talc based Trichoderma has been produced for commercial sale and income of Rs. 11, 69, 340/- has been generated. This successful transfer of bioagent technology has led to generate interest of State Agricultural Department and private companies in the market to meet out the growing demand of bioagent in the area. The commercial sale through these sources in this zone between 2007–08 to 2009–10 was approximately 87 metric tonnes. During this 15 year of journey on eco-friendly road approximately 13, 633 ha and 1, 23, 142 ha area has been covered under this technology through commercial sale of bioagent by this centre and Govt. and private agencies respectively. This clearly indicates impact of technology generated by this centre in managing soil borne diseases of the area and improving soil health.
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