Compositions and methods for systemic delivery of at least one cargo in a vascular plant. Compositionsmay include at least one cargo delivery particle, having a core and a shell; and at least one cargo disposed on the shell. The core may include at least one micronutrient. The shellmay include a coatingmaterial. The at least onecargo delivery particlemay have a size ofless than about 10 nanometers.Methodsmay include administering an effective amountof the composi tions to a plant
A nanoparticle for use within a composition for treating tomatoes as well as other agricultural products comprises:(1) a first shell layer comprising a leachant permeable base material in addition to a multi-valent metal (ie, typically copper) material; and (2) a second shell layer comprising a Quat material. Due to the multi-valent metal material and the Quat, the nanoparticle and the composition provide superior performance when treating tomatoes