Soil solarization in established avocado trees for control of Dematophora necatrix

Four field experiments on the control of Dematophora necatrix in avocado orchards affected by white root rot were conducted in the Mediterranean coastal area of southern Spain during 1991 to 1994. In the unshaded locations of solarized plots, the maximal temperatures were 35 to 42 degrees C, dependi...

Full description

Saved in:
Bibliographic Details
Published inPlant disease Vol. 82; no. 10; p. 1088
Main Authors Lopez-Herrera, C.J. (C.S.I.C., Algarrobo-Costa, Malaga, Spain.), Perez-Jimenez, R.M, Zea-Bonilla, T, Basallote-Ureba, M.J, Melero-Vara, J.M
Format Journal Article
LanguageEnglish
Published United States 01.10.1998
Subjects
AGENT PATHOGENE
CARACTERISTICAS MORFOLOGICAS SUELO
CONTROL CULTURAL
CONTROL DE ENFERMEDADES
CONTROLE DE MALADIES
CULTURAL CONTROL
DEPTH
DISEASE CONTROL
ENFERMEDADES FUNGOSAS
ESPAGNE
ESPANA
FUNGAL DISEASES
LUTTE CULTURALE
MALADIE FONGIQUE
OMBRE
ORCHARD SOILS
ORGANISMOS PATOGENOS
PATHOGENS
PERSEA AMERICANA
PROFONDEUR
PROFUNDIDAD
RECOVERY
ROSELLINIA
ROSELLINIA NECATRIX
SHADE
SOIL MORPHOLOGICAL FEATURES
SOIL SOLARIZATION
SOIL TEMPERATURE
SOL DE VERGER
SOLARISATION DU SOL
SOLARIZACION DE SUELOS
SOMBRA
SPAIN
SUELO DE HUERTOS
TEMPERATURA DEL SUELO
TEMPERATURE DU SOL
TRAIT MORPHOLOGIQUE DU SOL
VIABILIDAD
VIABILITE
VIABILITY
thermal inactivation
soilborne pathogen
Online AccessGet more information

Cover

More Information
Summary:Four field experiments on the control of Dematophora necatrix in avocado orchards affected by white root rot were conducted in the Mediterranean coastal area of southern Spain during 1991 to 1994. In the unshaded locations of solarized plots, the maximal temperatures were 35 to 42 degrees C, depending upon the year and soil depth (15 to 60 cm). Temperature increases attributable to soil solarization ranged between 4 and 8 degrees C in unshaded areas whereas for shaded areas they were approximately 4 degrees C. Inoculum recovery was decreased in root samples buried at 15 to 30 cm in unshaded locations of both solarized and unsolarized plots after 3 to 5 weeks, whereas 4 to 8 weeks of solarization were required for the elimination of the pathogen buried at depths of 45 to 60 cm. In contrast, inoculum recovery ranged from 30 to 60% for samples in shaded locations of unsolarized plots. D. necatrix was not recovered from roots of infected trees in solarized plots sampled 9 months after solarization, whereas recovery from roots in unsolarized plots was similar to levels before solarization. Soil solarization in established orchards was successful in reducing viability of inoculum buried in soil and eliminated inoculum in infected roots of live trees
Bibliography:1999005993
H20
ISSN:0191-2917
1943-7692
DOI:10.1094/pdis.1998.82.10.1088