Measure Avoidable Loss Assessment due to Post Flowering Stalk Rots Caused by Fusarium verticillioides in Maize in Southern Rajasthan, India

By : Kalpana Yadav, S.S. Sharma, Tarun Kumar Jatwa, Suresh Kumar

Page No: 127-132

Abstract
The objective of this experiment was to assess yield losses due to stalk rot in corn (Zea mays) after artificial inoculations through toothpick inoculations in susceptible variety ‘surya’ using paired plot technique in the southern districts of Rajasthan, India. Two field experiments were carried out in two different kharif seasons i.e. year 2019 and year 2020. Variety ‘surya’ were grown in field with 15 replications and inoculated with toothpick inoculations of Fusarium verticillioides. Samples of healthy and stalk rot infected plants were collected from each protected and unprotected plots, at harvesting stage. Result of field experiments revealed that rating and PDI were significantly lower in protected plots which are artificially inoculated with F. verticillioides, with average PDI 18.46% and Rating 2.84 in 2019, and of 19.12% PDI and 2.76 rating in 2020. PDI was significantly higher in unprotected plots that are 70.92 in 2019 and 70.94 in 2020. Significant loss in grain yield (gram/plot) was observed due to post flowering stalk rot (PFSR) in unprotected plots as compared to protected treatments were 23.66% in 2019 and 29.40% in 2020.
 

Authors :
Kalpana Yadav : Research Scholar Department of Plant Pathology, MPUAT, Udaipur.
S.S. Sharma : Professor, Department of Plant Pathology, MPUAT, Udaipur.
Tarun Kumar Jatwa : Assistant Professor, Department of Plant Pathology, RARI, Durgapura, Jaipur.
Suresh Kumar : Research Scholar Department of Plant Pathology, MPUAT, Udaipur.
 

DOI: https://doi.org/10.32381/JPSR.2022.38.01.12