Abstract
The efficacy of formulated Trichoderma harzianum based Tricho-compost, seed treatment with Trichoderma spore suspension Trichoderma inocula and chemical fungicide Provax 200 WP were tested against seedling disease of barley caused by soil borne pathogen Sclerotium rolfsii in the research field of Plant Pathology Division, Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh during 2013-14, 2014-15 and 2015-16. Tricho-composts were prepared with mixed substrates of cow dung, rice bran and poultry refuse colonized by T. harzianum. The results exhibited that seedling mortality of barley was significantly reduced by the Tricho-compost, Trichoderma inocula and Provax 200 WP in all the years. The yield of barley was sharply increased over control due to the T. harzianum formulations and Provax 200 WP. Among the treatments, application of Tricho-compost was found more efficient in the reduction of seedling mortality and acceleration of plant growth with increased yield of barley under S. rolfsii inoculated field experiments in Bangladesh. Seed treatment with Provax 200 WP and Trichoderma inocula also showed promising in reduction of seedling mortality and increasing plant growth and yield of barley.
Highlights
Barley (Hordeum vulgare L.) is a cereal crop of international importance and stands fourth major food grain crop after wheat, rice, and maize in the world in both quantity produced (136 million tons) and area of cultivation (566,000 km2) [1,2]
The efficacy of T. harzianum used as seed treatment by its spore suspension (Trichoderma inocula) and its mass production in compost materials called Tricho-composts for the management of seedling disease of barley caused by soil borne pathogen S. rolfsii as well as yield of barley was tested in field experiments during the period from 2012-13 to 201516
In the case of shoot weight the highest shoot weight was recorded due to soil amendment with Trichocompost-2 followed by Tricho-compost-1, seed treatment with Provax 200 WP and T. harzianum inocula and the lowest shoot weight was recorded from untreated control during 2013-14 cropping year (Table 2)
Summary
Barley (Hordeum vulgare L.) is a cereal crop of international importance and stands fourth major food grain crop after wheat, rice, and maize in the world in both quantity produced (136 million tons) and area of cultivation (566,000 km2) [1,2]. It is a major source of food for large number of people living in the cooler semi-arid areas of the world. The yield per unit area of barley at present is low in Bangladesh compared to other country
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