: “Effect of Nitrogen management in pigeon pea”.
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Date
2019
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SARDAR VALLABHBHAI PATEL UNIVERSITY OF AGRICULTURE & TECHNOLOGY MODIPURAM, MEERUT- 250110 (U. P.), INDIA
Abstract
DEARTMENT OF PLANT PATHOLOGY
SARDAR VALLABHBHAI PATEL UNIVERSITY OF AGRI AND TECHNOLOGY, MEERUT-250 110 (U.P.), INDIA
Name: Prashant Singh Advisor: Dr. Prashant Mishra Id. No: 3961 Professor Degree: M. Sc.(Ag.) Plant Pathology Deptt. Of Plant Pathology
Thesis title: “Studies on management of Dry Root Rot of Chickpea caused by Rhizoctonia bataticola (Taub.) Butler”
ABSTRACT
Pulses, also known as grain legumes, are main sources of protein among the vegetarians in India. Among all the pulses grown chickpea is the most important crop in terms of production & productivity ,grown in rabi season. There are various biotic and abiotic constraints especially the diseases, which has led to fall in its availability and pushed up their prices. Among them Dry root rot is an serious emerging threat to chickpea. Dry root rot caused by Rhizoctonia bataticola (Taub.) Butler is a soil borne fungal pathogen. The characteristic symptoms include yellowing of leaves, dark lesion on the stem at ground level, sclerotial bodies on affected tissues. The study was conducted with the objectives on the efficacy of the fungicides, bio-agents , assessment of induced systemic resistance in vitro. and comparative study combining various management tactics in field condition against R. bataticola . The complete mycelial inhibition was recorded with the fungicides Propiconazole and Carbendazim at all the i.e. 50, 75 and 100 ppm while Tebuconazole at 100 ppm concentrations after 96 hours of inoculation. Among the bio-agents the maximum was shown by Pseudomonas fluorescens (88.15%) followed by Trichoderma harzianum (83.70%) & Trichoderma viride (83.33%). During assessment for ISR; maximum PAL,PO & PPO activity and greater amount of lignification was their due to Biofilm of P. fluorescens- T. harzianum at 72 hrs. followed by decline in its activity up to 96 hrs. followed by P. fluorescens alone. During field experiment least per cent disease incidence, Yield and test weight was recorded in T. harzianum bioprimed seed @ 10g/kg followed Propiconazole @ 500 ml/ha. Hence, we can say seed biopriming & biofilmed have synergistic effect on reducing per cent disease incidence increasing growth, yield and resistance as well.
(Advisor) (Author)
PRASHANT MISHRA PRASHANT SINGH