HELMY, A., BAIUOMY, M., HILAL, A. (2001). FIRST RECORD OF ROOT ROT AND WILT DISEASES OF THE MEDICINAL PLANT RUTA GRAVEOLENS L. IN EGYPT AND THEIR CONTROL. Egyptian Journal of Agricultural Research, 79(1), 21-35. doi: 10.21608/ejar.2001.397331
ALIA A. HELMY; MOHAMED A. M. BAIUOMY; ARAFA A. HILAL. "FIRST RECORD OF ROOT ROT AND WILT DISEASES OF THE MEDICINAL PLANT RUTA GRAVEOLENS L. IN EGYPT AND THEIR CONTROL". Egyptian Journal of Agricultural Research, 79, 1, 2001, 21-35. doi: 10.21608/ejar.2001.397331
HELMY, A., BAIUOMY, M., HILAL, A. (2001). 'FIRST RECORD OF ROOT ROT AND WILT DISEASES OF THE MEDICINAL PLANT RUTA GRAVEOLENS L. IN EGYPT AND THEIR CONTROL', Egyptian Journal of Agricultural Research, 79(1), pp. 21-35. doi: 10.21608/ejar.2001.397331
HELMY, A., BAIUOMY, M., HILAL, A. FIRST RECORD OF ROOT ROT AND WILT DISEASES OF THE MEDICINAL PLANT RUTA GRAVEOLENS L. IN EGYPT AND THEIR CONTROL. Egyptian Journal of Agricultural Research, 2001; 79(1): 21-35. doi: 10.21608/ejar.2001.397331
FIRST RECORD OF ROOT ROT AND WILT DISEASES OF THE MEDICINAL PLANT RUTA GRAVEOLENS L. IN EGYPT AND THEIR CONTROL
Ornamental, Medicinal and Aromatic Plant Diseases Research Department, Plant Pathology Research Institute, Agricultural Research Center, Giza, Egypt
Abstract
Surveying plantations of rue (Ruta graves:dens) exhibited a new record of root rot and wilt fungaf diseases for the first time in Egypt or elsewhere. Isolation trials yielded several fungi belonging to 10 genera. Fusarium moniliforme (21.3%), F. sotani (17.6) and F. oxysporum (17.2) showed the highest percentages of frequency, followed by Rhizactonia solani (13.3%) and F. semitecturn (11.1%), while Pythium debaryanum occurred at 10.9%. Pathogenicity studies using seeds or seedlings in planting indicated that F. oxysporum, P. debaryanum and R. sotani were the most aggressive fungi. In infested soil, the use of Topsin M and Vitavax/Thiram as seed dressing, significantly controlled damping-off diseases in case of F. month-forme, F. oxysporum and Scierotinia scferotiorum, while Plant Guard (Trichederma harzianum, 3x11:17 cluirril) or Rhizo-N (Bacillus subtilis, 3x107 cfulgm) were the least effective. Also, these fungicides or bioagents successfully decreased infection significantly in comparison with the control when soils were infested with P. debaryanum or R. solani. On the other hand, dipping in Topsin M solution was generally the most effective treatment for the transplants against rue diseases, although it failed to give sufficient control in some cases. Efficacy of Plant Guard and Rhizo-N as transplants dipping treatments varied according to the pathogen. Rhizo-N was generally the best one. Positive effective values of the bloagents were approximately equal to that of Topsin M. Moreover, they were successful in some cases where fungicides were not.
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