Studies on soil mycoflora in the agricultural fields at tekkali mandal srikakulam district Andhra pradesh

Abstract

newline ABSTRACT newlineThis study presents a comprehensive investigation into the fungal diversity newlinepresent in agricultural ecosystems within Tekkali Mandal, situated in the Srikakulam newlineDistrict of Andhra Pradesh, India. The research focuses on the isolation, newlineidentification, and characterization of soil mycoflora across different crop fields, newlinenamely Rice, Ground Nut, and Black Gram, over a three-year period from 2014 to newline2016. The study is structured into several chapters, each addressing specific aspects of newlinesoil mycoflora and its interactions with agricultural practices. The first chapter newlineprovides a general introduction, highlighting the significance of soil microorganisms newlineand their intricate relationships within the ecosystem. Key topics such as soil fungi, newlineseasonal influences, pesticide effects, organic farming, bio-control, and the role of newlineTrichoderma as a bio-control agent are discussed. newlineThe second chapter offers a comprehensive review of existing literature, newlinehighlighting studies related to soil fungi isolation and identification from various newlineglobal regions. It also explores the effects of seasonal variations, pesticides, and newlineorganic farming on soil mycoflora. The third chapter provides a detailed overview of newlinethe geographical, topographic, and climatic characteristics of Tekkali Mandal, laying newlinethe foundation for the subsequent analysis. The fourth chapter outlines the materials newlineand methods employed during the research, including in vitro experiments conducted newlineat the Advanced Plant Pathology Laboratory, Andhra University. The collection of newlinesoil samples from different crop fields, meticulous sterilization procedures, and newlinechemical usage are described in detail. newlineThe fifth chapter showcases the results of isolation and identification of soil newlinefungi. A total of 1975 isolates were obtained from 162 soil samples, revealing a newlinediverse range of fungal genera. Notably, Aspergillus, Penicillium, and Trichoderma newlineemerged as the richest genera in terms of species count. In chapter six the seasonal newline