Global agricultural systems have faced several, unforeseen, and inescapable problems over the last ten years. Because of the unique properties of nanoparticles, including their high surface area, concentrated distribution size, reactivity, flexibility in shape, superior biocompatibility, and stability of agrochemicals, nanotechnology has provided a wide range of roles in crop production. Because of their many uses, nanoparticles can be employed as fertilizers, herbicides, insecticides, or even as a miracle drug that targets particular plant cellular organelles. Silver nanocomposites are a mixture of silver nanoparticles and one or more different substances, furthermore, one or more of them have diameters in nanometers. Silver nanocomposite (Ag NCs) can have either negative or positive impacts on plant growth, depending on the concentration, and size of the particles as well as the species of plant. Plant species come into contact with Ag NCs by foliar application, irrigation, or direct soil application. Individual NMs are not as advantageous as NCs, and plants could benefit greatly from increased nutrient availability and photosynthetic pigmentation thanks to nanocomposites. These nanocomposites readily release nutrients in the form of soluble ions. Numerous scientists have clarified the effects of silver nanoparticles on the germination of seeds and the growth and development of plants in soil, but little studies focused on the use of silver nanocomposite so, the current chapter emphasized the functions of Ag NC for improved plant-soil traits, control of plant pathogens, seed germination and root system anatomy, absorption, translocation and mode of action of Ag NC in plants.