Silver nanoparticles (AgNPs) have emerged as versatile nanomaterials with uses in a broad range, functioning as both a growth enhancer in drought conditions and potent antimicrobial agents in agricultural systems. Smaller size NPs, notable chemical and physical characteristics and reactive surfaces allow them to interact with plants effectively. Such interaction promotes nutrient absorption, makes the plant defense stronger against environmental stress like pest attack or drought and improves photosynthesis. AgNPs are well known for their antifungal and antimicrobial potential, along with being plant immune system-boosting agents by activating proteins and enzymes associated with plants’ defense mechanisms. These properties put AgNPs as efficient and eco-friendly alternatives to classical pesticides, which in turn reduces the need for chemical-based solutions. Along with this, AgNPs have the potential to deal with the major agricultural issues like drought, salinity, high temperature and heavy metals, which make AgNPs essential tools for sustainable farming. Current developments in green synthesis methods, including the utilization of plant extracts or biological entities, highlight AgNPs as environmentally friendly alternatives. Despite these advantages, there are concerns regarding their toxicity and environmental effects, which present regulatory challenges requiring serious consideration. This chapter presents an in-depth analysis of the mechanisms by which AgNPs can influence agriculture, highlighting their role in the improvement of crop resilience and yield under harsh environmental conditions.