Biology and control of Coniophora eremophila on lemon trees in Arizona

D. M. Bigelow, Michael E Matheron, R. L. Gilbertson

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A survey of mature lemon trees showed an average of 30% of trees with symptoms of brown heartrot caused by Coniophora eremophila. Growth of C. eremophila inoculated into branches of Valencia orange, Marsh grapefruit, Orlando tangelo, or Lisbon lemon on rough lemon rootstock was significantly higher in lemon than in other types of citrus. C. eremophila inoculated into Lisbon lemon branches on trees established on rough lemon, volkameriana, macrophylla, Cleopatra mandarin, sour orange, or Troyer citrange rootstocks showed no significant differences in growth. Somatic incompatibility tests of isolates from one mature orchard demonstrated that isolates from different trees were incompatible. In vitro fungicide trials showed that NECTEC P paste and NECTEC blank paste effectively reduced decay on lemon blocks 15 weeks after inoculation with C. eremophila. Field fungicide trials showed that NECTEC P paste with fungicides, as well as the blank paste without fungicides, significantly inhibited the advance of the fungus 7 months after inoculation. Also, propiconazole at 10,000 μg/ml, imazalil at 20,000 μg/ml, or propiconazole at 10,000 μg/ml in combination with imazalil at 20,000 μg/ml significantly inhibited the advance of the fungus.

Original languageEnglish (US)
Pages (from-to)934-939
Number of pages6
JournalPlant Disease
Volume80
Issue number8
StatePublished - 1996

Fingerprint

Coniophora
lemons
fungicides
Biological Sciences
Citrus jambhiri
imazalil
propiconazole
Citroncirus webberi
Citrus aurantium
fungi
grapefruits
mandarins
Citrus sinensis
signs and symptoms (plants)
marshes
rootstocks
Citrus
orchards
deterioration

ASJC Scopus subject areas

  • Plant Science

Cite this

Biology and control of Coniophora eremophila on lemon trees in Arizona. / Bigelow, D. M.; Matheron, Michael E; Gilbertson, R. L.

In: Plant Disease, Vol. 80, No. 8, 1996, p. 934-939.

Research output: Contribution to journalArticle

Bigelow, DM, Matheron, ME & Gilbertson, RL 1996, 'Biology and control of Coniophora eremophila on lemon trees in Arizona', Plant Disease, vol. 80, no. 8, pp. 934-939.
Bigelow, D. M. ; Matheron, Michael E ; Gilbertson, R. L. / Biology and control of Coniophora eremophila on lemon trees in Arizona. In: Plant Disease. 1996 ; Vol. 80, No. 8. pp. 934-939.
@article{7015521bc586426cb86955da350c7613,
title = "Biology and control of Coniophora eremophila on lemon trees in Arizona",
abstract = "A survey of mature lemon trees showed an average of 30{\%} of trees with symptoms of brown heartrot caused by Coniophora eremophila. Growth of C. eremophila inoculated into branches of Valencia orange, Marsh grapefruit, Orlando tangelo, or Lisbon lemon on rough lemon rootstock was significantly higher in lemon than in other types of citrus. C. eremophila inoculated into Lisbon lemon branches on trees established on rough lemon, volkameriana, macrophylla, Cleopatra mandarin, sour orange, or Troyer citrange rootstocks showed no significant differences in growth. Somatic incompatibility tests of isolates from one mature orchard demonstrated that isolates from different trees were incompatible. In vitro fungicide trials showed that NECTEC P paste and NECTEC blank paste effectively reduced decay on lemon blocks 15 weeks after inoculation with C. eremophila. Field fungicide trials showed that NECTEC P paste with fungicides, as well as the blank paste without fungicides, significantly inhibited the advance of the fungus 7 months after inoculation. Also, propiconazole at 10,000 μg/ml, imazalil at 20,000 μg/ml, or propiconazole at 10,000 μg/ml in combination with imazalil at 20,000 μg/ml significantly inhibited the advance of the fungus.",
author = "Bigelow, {D. M.} and Matheron, {Michael E} and Gilbertson, {R. L.}",
year = "1996",
language = "English (US)",
volume = "80",
pages = "934--939",
journal = "Plant Disease",
issn = "0191-2917",
publisher = "American Phytopathological Society",
number = "8",

}

TY - JOUR

T1 - Biology and control of Coniophora eremophila on lemon trees in Arizona

AU - Bigelow, D. M.

AU - Matheron, Michael E

AU - Gilbertson, R. L.

PY - 1996

Y1 - 1996

N2 - A survey of mature lemon trees showed an average of 30% of trees with symptoms of brown heartrot caused by Coniophora eremophila. Growth of C. eremophila inoculated into branches of Valencia orange, Marsh grapefruit, Orlando tangelo, or Lisbon lemon on rough lemon rootstock was significantly higher in lemon than in other types of citrus. C. eremophila inoculated into Lisbon lemon branches on trees established on rough lemon, volkameriana, macrophylla, Cleopatra mandarin, sour orange, or Troyer citrange rootstocks showed no significant differences in growth. Somatic incompatibility tests of isolates from one mature orchard demonstrated that isolates from different trees were incompatible. In vitro fungicide trials showed that NECTEC P paste and NECTEC blank paste effectively reduced decay on lemon blocks 15 weeks after inoculation with C. eremophila. Field fungicide trials showed that NECTEC P paste with fungicides, as well as the blank paste without fungicides, significantly inhibited the advance of the fungus 7 months after inoculation. Also, propiconazole at 10,000 μg/ml, imazalil at 20,000 μg/ml, or propiconazole at 10,000 μg/ml in combination with imazalil at 20,000 μg/ml significantly inhibited the advance of the fungus.

AB - A survey of mature lemon trees showed an average of 30% of trees with symptoms of brown heartrot caused by Coniophora eremophila. Growth of C. eremophila inoculated into branches of Valencia orange, Marsh grapefruit, Orlando tangelo, or Lisbon lemon on rough lemon rootstock was significantly higher in lemon than in other types of citrus. C. eremophila inoculated into Lisbon lemon branches on trees established on rough lemon, volkameriana, macrophylla, Cleopatra mandarin, sour orange, or Troyer citrange rootstocks showed no significant differences in growth. Somatic incompatibility tests of isolates from one mature orchard demonstrated that isolates from different trees were incompatible. In vitro fungicide trials showed that NECTEC P paste and NECTEC blank paste effectively reduced decay on lemon blocks 15 weeks after inoculation with C. eremophila. Field fungicide trials showed that NECTEC P paste with fungicides, as well as the blank paste without fungicides, significantly inhibited the advance of the fungus 7 months after inoculation. Also, propiconazole at 10,000 μg/ml, imazalil at 20,000 μg/ml, or propiconazole at 10,000 μg/ml in combination with imazalil at 20,000 μg/ml significantly inhibited the advance of the fungus.

UR - http://www.scopus.com/inward/record.url?scp=0029853831&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029853831&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0029853831

VL - 80

SP - 934

EP - 939

JO - Plant Disease

JF - Plant Disease

SN - 0191-2917

IS - 8

ER -