Home ----- Officers ----- Journal ----- Fruit & Nut Registrars ----- Join ----- News

Journal of the American Pomological Society

American Pomological Society

Volume 46 Number 1 Article 12
Year 1992 Month 1
Title: Tree Canopy Volume and Leaf Mineral Nutrient Concentrations of 'Redblush' Grapefruit on Twelve Rootstocks
Author: E. Fallahi
Abstract:
Tree growth, leaf fresh weight, dry matter and mineral nutrient concentrations and their relationships with yield in 'Redblush' grapefruit (Citrus paradisi Macf.) on twelve rootstocks under the desert conditions of southwest Arizona were studied over several years. Trees on Volkamer lemon (C. limon Burm. f.), Oklawaha sour orange (C. aurantium L.), rough lemon (C. jambhiri Lush) and Carrizo citrange [C. sinensis (L.) Osbeck x Poncirus trifoliata (L.) Raf.] had large canopy volumes and highe yields while those on Savage citrange [C. sinensis (L.) Osbeck x P. trifoliata (L.) Raf.], Ichang pummelo (C. ichangensis hyb.), Cleopatra mandarin (C. reticulata Blanco.), Swingle citrumelo (C. paradisi x P. trifoliata) and macrophylla (Alemow) (C. macrophylla Wester) were in low yield and small canopy group. 'Redblush' grapefruit trees on Palestine sweet lime (C. limettiodes Tan.) were in the high yielding group in spite of their small canopy volume. Trees on Savage citrange had the highest leaf percent dry matter, while those on Volkamer lemon had the lowest. Leaves of trees on macrophylla had the highest levels of N, Cu, Mn and Fe, but the lowest levels of Ca and Mg. Trees on all citranges and Swingle citrumelo had low leaf N, and those on citranges also had low leaf Zn and Mn. 'Redblush' grape fruit trees on Volkamer lemon and Ichang pum melo had the highest leaf Zn.

Full text download: APS subscribers       ISHS members & pay-per-view
(PDF 697530 bytes)

Translate:

       

APS membership administration       ISHS membership administration