1. Phosphorus Rate Effects with and without AVAIL on Dryland Winter Wheat in an Eroded Calcareous Soil

Soluble phosphorus fertilizer precipitates rapidly after application on alkaline, calcareous soils. A fertilizer additive known as AVAIL® (J.R. Simplot Company) is purported to keep applied phosphorus fertilizer more available to plants by binding soil cations, thereby reducing precipitation reactions. In a soil high in base cations, this could prove useful due to the attraction of AVAIL® with cations such as Ca2+, but is fairly unstudied for dryland wheat production on... R. Hodges