Response of Maize ( L.) to Drought under Salinity and Boron Stress in the Atacama Desert.

The Lluta valley in northern Chile is a hyper-arid region with annual precipitation lower than 1.1 mm, and high levels of boron (B) from alluvial deposits are present together with other salts that originated from the Cretaceous. Under these abiotic conditions, the 'lluteño' maize ( L.