Rashed,, M., Ammar, M., EI-Sharabasy, S. (2006). EFFECT OF SALINITY ON ROOT ROT DISEASE OF DATE PALM AND ITS CONTROL WITH SPECIAL REFERENCE TO Phytophthora palmivora (BUTL.) AS A NEW CAUSAL PATHOGEN IN EGYPT.. Journal of Plant Production, 31(6), 3433-3442. doi: 10.21608/jpp.2006.236028
M. F. Rashed,; M. I. Ammar; S. F. EI-Sharabasy. "EFFECT OF SALINITY ON ROOT ROT DISEASE OF DATE PALM AND ITS CONTROL WITH SPECIAL REFERENCE TO Phytophthora palmivora (BUTL.) AS A NEW CAUSAL PATHOGEN IN EGYPT.". Journal of Plant Production, 31, 6, 2006, 3433-3442. doi: 10.21608/jpp.2006.236028
Rashed,, M., Ammar, M., EI-Sharabasy, S. (2006). 'EFFECT OF SALINITY ON ROOT ROT DISEASE OF DATE PALM AND ITS CONTROL WITH SPECIAL REFERENCE TO Phytophthora palmivora (BUTL.) AS A NEW CAUSAL PATHOGEN IN EGYPT.', Journal of Plant Production, 31(6), pp. 3433-3442. doi: 10.21608/jpp.2006.236028
Rashed,, M., Ammar, M., EI-Sharabasy, S. EFFECT OF SALINITY ON ROOT ROT DISEASE OF DATE PALM AND ITS CONTROL WITH SPECIAL REFERENCE TO Phytophthora palmivora (BUTL.) AS A NEW CAUSAL PATHOGEN IN EGYPT.. Journal of Plant Production, 2006; 31(6): 3433-3442. doi: 10.21608/jpp.2006.236028
EFFECT OF SALINITY ON ROOT ROT DISEASE OF DATE PALM AND ITS CONTROL WITH SPECIAL REFERENCE TO Phytophthora palmivora (BUTL.) AS A NEW CAUSAL PATHOGEN IN EGYPT.
1Plant Pathology Res. Inst., Agriculture Research Center, Giza, Egypt
2Central Laboratory for Date Palm Research & Development.
Abstract
Date palm (Phoenix dactylifera L.) plantation cultivated in the new reclaimed lar.d under different levels of soil and water salinity in some regions was affected by root rot disease. The main symptoms are stunting, malformation of the new leaves only; reduction in vegetative growth, drying of some outer leaves and some rachides appears free from pinnae. Phytop < /em>hthora palmivora was recorded for the first time in Egypt as the main causal pathogen of root rot disease. On the other hand, Fusarium moniliforme was less frequent and pathogenic one. Effect of solute potential on disease incidence revealed that increasing of irrigation water salinity increased the root rot caused by Ph. palmivora in all salt concentrations used meanwhile, no significant effect was found in case of F. moniliforme. In general, results indicate that high salinity levels may be a factor in root rot development leading to higher disease incidence. Evaluation of different fungicides on disease control revealed that Topsin M 70 and Tachlq: ren were the most effective fungicides against both tested fungi in vitro. Also, un: r field conditions both fungiCides gave the same trend of laboratory screening aile'. 'ere the best for controlling root rot recorded the highest percent of decrease in dis( ase incidence.
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