Here we will provides an in-depth look at the science and applications of nitrogen-fixing bacteria and other beneficial microbes in modern farming. It begins with the importance of nitrogen in plant growth and the role microbes play in converting atmospheric nitrogen into usable forms. The PPT explains the unique functions of: Azospirillum brasilense – a powerful nitrogen fixer that boosts root development and nutrient uptake. Thiobacillus thiooxidans – key in sulfur oxidation and soil nutrient release. Trichoderma harzianum & Trichoderma viride – fungi that suppress harmful pathogens and promote root health. Beauveria bassiana – an eco-friendly insect-controlling fungus that supports crop productivity. We also covers practical agricultural applications, benefits for soil fertility, reduced reliance on chemical inputs, and how microbial consortia contribute to climate-smart and sustainable farming practices. By the end, viewers will understand how these microbes work together to enhance soil health, protect crops, and improve yields naturally.