Abstract
The present study was carried out to evaluate the effect of bioagents and organic amendments in suppressing the dry root rot of mungbean incited by Rhizoctonia bataticola. The locally isolated pathogen and fungal biocontrol agents were identified based on morphological and molecular characterization. These identified bioagents were tested in vitro, and the highest mycelial inhibition was recorded in dual culture assay by Trichoderma harzianum (74.44%), and among organic amendments, maximum mycelial inhibition was found in neem cake (61.11%). In a greenhouse study, T. harzianum + neem cake effectively enhanced the percent germination (93.33%) and decreased the percent disease mortality (11.67%) than the other treatments. The morphological parameter like plant height (57.50 cm), dry weight (22.83 g) root nodules (51), pods/plant (58), and 100-seed weight (5.78 g) were found to be at the maximum in this combined application. Physiological pigments viz. chlorophyll (2.41 mg/g) and carotenoids (0.19 mg/g), protein content (5.85 mg/g), and leghemoglobin (11.75 mg/g) were also found to be maximum in T. harzianum + neem cake and minimum phenol content (1.41 mg/g). The study concludes that T. harzianum + neem cake can be recommended as an effective approach for the management of dry root rot of mungbean.
Highlights
Mungbean, Vigna radiata (L.) Wilczek, is one of the most essential and widely cultivated pulse crops
The crop is attacked by numerous diseases caused by fungi, bacteria, and viruses. Among these diseases is the dry root rot of mungbean that caused by Rhizoctonia bataticola (Taub) Butler (Pycnidial stage: Macrophomina phaseolina (Tassi.) Goid) and is one of the most devastating diseases occurring in tropical and subtropical countries
This disease causes substantial losses of mungbean causing seed infection ranging from 2.2–15.7% which leads to decrease in the grain yield by 10.8% as well as protein content (12.3%) in seeds (Kaushik et al, 1987)
Summary
Vigna radiata (L.) Wilczek, is one of the most essential and widely cultivated pulse crops. The crop is attacked by numerous diseases caused by fungi, bacteria, and viruses. Among these diseases is the dry root rot of mungbean that caused by Rhizoctonia bataticola (Taub) Butler (Pycnidial stage: Macrophomina phaseolina (Tassi.) Goid) and is one of the most devastating diseases occurring in tropical and subtropical countries. This disease causes substantial losses of mungbean causing seed infection ranging from 2.2–15.7% which leads to decrease in the grain yield by 10.8% as well as protein content (12.3%) in seeds (Kaushik et al, 1987).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
