See more from this Session: Graduate Student Oral Competition
The main goal of this study is to assess the salinity tolerance of citrus rootstocks that are currently available for commercial citrus production in the LRGV, and to determine if low-quality water can be safely used for citrus irrigation. Among the requirements for rootstocks grown in the LRGV are tolerance to calcareous soils, Citrus Tristeza Virus (CTV) resistance, and salinity tolerance. The standard rootstock used when soil conditions are alkaline and clayey has been the Sour Orange rootstock; however, alternative rootstocks are being considered due to its susceptibility to CTV. There are several rootstock varieties that are CTV resistant, yield high quality fruit and are tolerant to calcareous clay soils; C-22 and C146 rootstocks are among the most promising of these new varieties. This experiment was conducted using a simulated brackish water solution applied at 5 levels of electrical conductivity to assess salinity tolerance, physiological changes and general tree health when exposed to salinity. Here we will discuss the salinity tolerance of the three citrus rootstocks studied and the implications for the citrus industry.