MINIMIZING OF CHEMICALS APPLICATIONS FOR CONTROL OF FUSARIUM DISEASES ON GLADIOLUS BY INTEGRATED MANAGEMENT PR0GRAMME
Samira Gfaly Abdou Abdel-Malak;
Abstract
The present investigation was plmmed to study Fusarium disease on gladiolus in laboratory, greenhouse and field. Chemicals, biological agents and solarization as well as the efficacy of N, P, K fertilization, biofertilizers, irrigation, were studied for disease control, plant growth and yield of corms and connels.
Results obtained can be summarized as follows:
1. The percentages of naturally infected plants m Giza and Menofiya governorates were nearly the same (45%) and Qualubiya (28.5%), whereas it recorded 23.4, 16.9, 12.8and11.5%onthestoredcormsat5°Cfortwo months obtained from Menofiya, Giza, Qualubiya and Cairo governorates, respectively.
2. The fungus F. oxysporum f.sp. gladioli was frequently isolated from all collected corms (100%) showing typical symptoms of Fusarium rot, while the other species of Fusarium were occurred in little value percentages ranged between 1.0% - 6.8%. on growing plant and 0.1 - 8.9% at storage. However, Penicillium gladioli was isolated from growing plant corms and stored ones at the rates of7.9 and 16.8, respectively.
3. Pathogenicity of twelve Fusarium isolates were generally variable since the first 5 isolates were highly pathogenic to different gladiolus varieties as compared with the rest ones . On the other hand Peter Pears cv. showed higher percentage of infection by isolates No. 2 and 5 (100%), No. 3 (91.67%), No.4 (87.2%) and No. 1 (86.?5%) than the other tested varieties.
Results obtained can be summarized as follows:
1. The percentages of naturally infected plants m Giza and Menofiya governorates were nearly the same (45%) and Qualubiya (28.5%), whereas it recorded 23.4, 16.9, 12.8and11.5%onthestoredcormsat5°Cfortwo months obtained from Menofiya, Giza, Qualubiya and Cairo governorates, respectively.
2. The fungus F. oxysporum f.sp. gladioli was frequently isolated from all collected corms (100%) showing typical symptoms of Fusarium rot, while the other species of Fusarium were occurred in little value percentages ranged between 1.0% - 6.8%. on growing plant and 0.1 - 8.9% at storage. However, Penicillium gladioli was isolated from growing plant corms and stored ones at the rates of7.9 and 16.8, respectively.
3. Pathogenicity of twelve Fusarium isolates were generally variable since the first 5 isolates were highly pathogenic to different gladiolus varieties as compared with the rest ones . On the other hand Peter Pears cv. showed higher percentage of infection by isolates No. 2 and 5 (100%), No. 3 (91.67%), No.4 (87.2%) and No. 1 (86.?5%) than the other tested varieties.
Other data
| Title | MINIMIZING OF CHEMICALS APPLICATIONS FOR CONTROL OF FUSARIUM DISEASES ON GLADIOLUS BY INTEGRATED MANAGEMENT PR0GRAMME | Other Titles | الحد من استخدام المبيدات الزراعية لمقازمة أمراض الفيوزاريوم فى الجلاديولس بتطبيق برنامج مكافحة متكامل | Authors | Samira Gfaly Abdou Abdel-Malak | Issue Date | 2000 |
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