Skip to Content

‘Owari’ Satsuma Rootstock Trial Summary 2018 & 2019

By: Jake Price (UGA Extension, Lowndes County, GA – ) and Dr. Kim Bowman (Rootstock geneticist, Ft. Pierce, FL – )

Purpose: Identify the best commercially-available rootstocks for ‘Owari’ satsumas, based upon effects on fruit yield, fruit quality, cold-hardiness, tree health, fruit size, and tree size.

Background: In 2014, Lowndes Extension began growing ‘Owari’ satsuma trees on standard and new hybrid rootstocks in a replicated research plot to help citrus growers determine what rootstocks to use with satsumas. In addition to commonly used Poncirus trifoliata rootstocks such as ‘Rubidoux’, ‘Rich 16-6’, and ‘Flying Dragon’, recently released trifoliate hybrid rootstocks developed by Dr. Kim Bowman of the USDA-ARS in Ft. Pierce, Florida are being evaluated. Each year, as the trees mature, data is being collected to show how each of these rootstocks perform with the ‘Owari’ satsuma scion.   The data below show yield and Brix for 2018 and 2019.  Additional information on citrus rootstocks and 2019 data for the ‘Owari’ satsuma trial can be found at Dr. Bowman’s website

Location:  Valdosta, GA

Number Rootstocks: 9

Experimental Design: Randomized complete block, 6 reps × 1 tree/rootstock

Spacing: 12 ft. × 20 ft. (3.6 m × 6.1 m)

Yield and Brix Summary Table

ROOTSTOCKYEAR PLANTED2018 YIELD2018 BRIX2019 YIELD2019 BRIX
SOUR ORANGE7/2015239.86610.3
KUHARSKI8/20147910.618110
US-8977/2015339.4709.4
US-8525/2015689.91029.8
US-8128/2014929.914610
US-9428/20141059.51479.6
CLEOPATRA8/20144610.513310.1
X-6398/20147810.318710.4
SWINGLE8/20146211.19710.2
RUBIDOUX6/2016NANANANA
Posted in Citrus Production, Variety Selection. Bookmark the permalink.

About Jonathan Oliver

Dr. Jonathan Oliver is an Assistant Professor and Extension Specialist in the Department of Plant Pathology at the University of Georgia. He has a 75% research and 25% extension appointment. Dr. Oliver started in his current position at the University of Georgia in mid-2017 as an extension fruit pathologist at the Coastal Plains Experiment Station in Tifton, Georgia. His responsibilities include research and extension activities focused on pathogen biology and disease management in fruit crops grown primarily in the southern part of Georgia, including blueberries, blackberries, citrus, and other emerging fruit crops. Dr. Oliver obtained a BS degree in Plant Pathology and Microbiology & Cell Science from the University of Florida in 2005, and a PhD in Plant Microbe Biology from Cornell University, New York State Agricultural Experiment Station in Geneva, NY in 2011. In addition, he has also been postdoctoral researcher at Kansas State University and Auburn University. At Auburn, he characterized the interactions between the emerging bacterial pathogen, Xylella fastidiosa, and its blueberry plant hosts. He currently serves as a Plant Pathology Section editor for the Southeast Regional Blueberry Integrated Management Guide.