Long-term effect of soil solarization for the control of Rosellinia necatrix in apple
1990; Elsevier BV; Volume: 9; Issue: 4 Linguagem: Inglês
10.1016/0261-2194(90)90110-s
ISSN1873-6904
AutoresShirra Freeman, A. Sztejnberg, E. Shabi, J. Katan,
Tópico(s)Plant Virus Research Studies
ResumoThe effects of pre- and post-planting soil solarization on white root rot of apple caused by Rosellinia necatrix were examined in two naturally infested orchards. The pathogen was eradicated in solarized soil to a depth of 30 cm. Partial or complete destruction of the pathogen was obtained in solarized-shaded (partially shaded by the tree canopy) plots. No reinfestation of solarized and solarized-shaded soil was observed 2 years after treatment. No death of replanted apple trees occurred in the solarized plots up to 2 years after solarization, whereas 60% of trees died in untreated plots. No disease developed during the third year after solarization in an existing apple orchard, but a low rate of disease recurred in the fourth year. In contrast, mortality in diseased trees in the absence of solarization reached 100%, 4 years after treatment. Two previously solarized soils, out of seven tested, caused reduced growth of the pathogen, indicating induction of soil suppressiveness by solarization.
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