Foliar fertizilation to increase maturation in peanut

Growers often apply foliar treatments or "boosters" to improve overall peanut (Arachis hypogaea L.) crop performance and yield. Some anecdotal claims of the benefits of the product include increased numbers of pegs and pods, ultimately resulting in improved yield (Kuepper, 2003) and grade (Triangle Chemicals, Sycamore, GA). The main claim made by the manufacturers of these products is an overall improved "immune system" response in the plant (Peg Power, 2014). However, these claims have not been validated by research. Previous research on foliar fertilizer in peanut using a NPKS solution did not provide significant yield increases (Walker et al., 1982; Ha levy et al., 1987). Soybean yield response to foliar fertilizer has been inconsistent, showing both an increase and decrease (Garcia and Hanway, 1976; Pool?? et al., 1983; Moreira et al., 2017). Although foliar fertilizers can be tank mixed with fungicides, the added cost represents an additional economic input for the grower.