Performance of ‘Owari’ Satsuma Mandarin and ‘Washington’ Navel Orange on Trifoliate Orange and Citrange in Louisiana1

Abstract

Abstract Fruit production of ‘Owari’ satsuma mandarin (Citrus reticulata Blanco) on 16 rootstocks was best on Argentina, Christiansen, Benecke, and English Small trifoliate oranges (Poncirus trifoliata (L.) Raf.) and Carrizo citrange (P. trifoliata (L.) Raf. × C. sinensis (L.) Osbeck). The lowest yielding trees were on Rusk citrange and English Large trifoliate. Navel orange on Rubidoux trifoliate, Troyer, Carrizo and Uvalde citranges were more productive than trees on Rusk or Citremon C46216 (P. trifoliata (L.) Raf. × Citrus limon (L.)). Satsuma and navel on Troyer and Carrizo citranges produced the heaviest fruit. Fruit weight and production were not always correlated. In general, the larger fruit had thicker rinds. Satsuma on Rubidoux, Christiansen, Norton and Carrizo had darker orange colored rinds; whereas those on Troyer were much greener in color. Navel orange on Rubidoux had the better rind color. Rootstocks had no influence on juice color of navels or satsumas. Fruit from navel orange trees on Rusk had the highest solids/acid ratio of the navel oranges. Satsuma on Rubidoux had the highest juice percentage, those on English Large had the highest soluble solids and titratable acidity. Satsuma and navel orange trees on citrange rootstocks, with the exception of Rusk, were larger than those on trifoliate oranges. However, trees on citranges had less cold hardiness than on trifoliates.