Interactions between plant nutrition and symptom expression in mandarin trees infected with the disease huanglongbing
A. B. Pustika A B , S. Subandiyah B , P. Holford C F , G. A. C. Beattie C , T. Iwanami D and Y. Masaoka EA Yogyakarta Assessment Institute of Agricultural Technology, Karangsari, Wedomartani, Ngemplak Sleman, Yogyakarta 55010, Indonesia.
B Graduate School, Faculty of Agriculture, Gadjah Mada University, Bulak Sumur, Yogyakarta 55281, Indonesia.
C Centre for Plant and Food Science, University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797, Australia.
D National Institute of Fruit Tree Science, Fujimoto 2-1, Tsukuba, Ibaraki 305-8605, Japan.
E Graduate School of Biosphere Science, Hiroshima University, Kagamiyama 1-4-4, Higashi-Hiroshima, Hiroshima 739-8528, Japan.
F Corresponding author. Email: p.holford@uws.edu.au
Australasian Plant Disease Notes 3(1) 112-115 https://doi.org/10.1071/DN08045
Submitted: 27 May 2008 Accepted: 29 July 2008 Published: 6 August 2008
Abstract
A survey of Siem mandarin trees (Citrus reticulata Blanco) grown in different soil types and given different fertiliser regimes showed that applications of a foliar fertiliser reduced the symptom expression of trees infected with huanglongbing by ~40%. In contrast, infected trees growing in a sandy soil, or in a clay–loam, did not differ in their level of symptom expression, despite differences in the fertility of the two soils. These data suggest that infection restricts either nutrient uptake or transport and, therefore, that foliar applied minerals may prolong tree life and reduce yield losses.
Acknowledgements
This work was partially funded through a grant (CS2/2000/043) from the Australian Centre for International Agricultural Research. The authors would also like to thank Paul Milham (NSW Department of Primary Industries) and Pat Barkley for their comments on the manuscript.
Aubert B
(1979) Progrès accompli dans la lutte contre le greening des citrus à la Réunion. Revue Agricole et Sucrière 58, 53–56.
[Verified 31 July 2008]
Subandiyah S,
Nikoh N,
Tsuyumu S,
Somowiyarjo S, Fukatsu T
(2000) Complex endosymbiotic microbiota of the citrus psyllid Diaphorina citri (Homoptera: Psylloidea). Zoological Science 17, 983–989.
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