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Mishra, Prashant
- Integration of Organic Amendments and Antagonists for the Management of Sheath Blight in Aromatic Rice
Abstract Views :259 |
PDF Views:125
Authors
Affiliations
1 Department of Plant Pathology, Sardar Vallabh Bhai Patel University of Agriculture and Technology, Meerut 250110, Uttar Pradesh, IN
1 Department of Plant Pathology, Sardar Vallabh Bhai Patel University of Agriculture and Technology, Meerut 250110, Uttar Pradesh, IN
Source
Journal of Biological Control, Vol 23, No 3 (2009), Pagination: 305-309Abstract
The effect of integration of organic amendments with fungal or bacterial antagonists (Trichoderma harzianum and Pseudomonas fluorescens) applied as soil treatment was evaluated against sheath blight disease in Basmati rice caused by Rhizoctonia solani under field conditions. Neem cake + T. harzianum was found to be the most effective treatment in reducing the disease incidence by up to 57.27% and disease severity by 54.77% followed by farm yard manure (FYM) + T. harzianum, which resulted in the reduction of disease incidence to 53.77% and disease severity to 52.29%, respectively. Among all the organic amendments, reduction of sheath blight was lowest with sawdust + P. fluorescens with disease incidence of 40.94% and disease severity of 35.29%. Maximum increase in grain yield (39.44%) and 1000-grain weight of rice (29.19g) were recorded with neem cake + T. harzianum treatment followed by treatments FYM + T. harzianum and pressmud + T. harzianum. Minimum increase in grain yield (9.76%) and 1000-grain weight (11.53%) were recorded with the treatment Sawdust + P. fluorescens.Keywords
Antagonist, Organic Amendment, Pseudomonas fluorescens, Rice, Sheath Blight, Trichoderma harzianum.References
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- Molecular Detection and Management of Tomato Leaf Curl Virus with Pseudomonas fluorescens and Chitosan
Abstract Views :286 |
PDF Views:133
Authors
Amit Kumar Yadav
1,
Ramesh Singh Yadav
1,
Prashant Mishra
1,
G. S. Madhu
2,
Abhishek Kumar
1,
Ajay Kumar Mishra
1
Affiliations
1 Centre of Excellence for Sanitary and Phytosanitary (SPS), Department of Plant Pathology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut - 250110, Uttar Pradesh, IN
2 Division of Plant Pathology, IARI, New Delhi, IN
1 Centre of Excellence for Sanitary and Phytosanitary (SPS), Department of Plant Pathology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut - 250110, Uttar Pradesh, IN
2 Division of Plant Pathology, IARI, New Delhi, IN
Source
Journal of Biological Control, Vol 32, No 3 (2018), Pagination: 172-178Abstract
Tomato production is affected by various fungal, bacterial and viral diseases that attribute to considerable yield losses. Among all the diseases of tomato, Tomato Leaf Curl Virus (ToLCV) disease is cited to be the most devastating both in terms of quantitative and qualitative yield losses. Often, the loss reaches to the extent of 100% during summer throughout India. The virus associated with tomato leaf curl disease was detected by PCR using coat protein specific primers. The present investigations were carried out with potent Pseudomonas fluorescens isolates alone and along with elicitor molecule chitosan to determine its ability to control ToLCV in tomato. Different formulations of P. fluorescens and chitosan were evaluated for controlling ToLCV and growth promotion of tomato. It was found that the application of P. fluorescens isolates Pf1 and Pf2 @ 5kg/ha in combination with chitosan @ 5% reduces the severity of the ToLCV disease by 80 – 90 %. Application of chitosan and P. fluorescens alone caused 60 – 70% reduction in severity of ToLCV disease. Moreover, the plants inoculated with the chitosan based formulation of P. fluorescens isolates Pf1 and Pf2 recorded maximum plant height, fruit number and yield/plant over the control in potted condition. The results, thus, indicate that addition of chitosan has enhanced the biocontrol efficacy of P. fluorescens against ToLCV.Keywords
Bio-Control, Chitosan, Pseudomonas fluorescens, Tomato, ToLCV.References
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