Comparative studies on nanosulfur and certain fungicides to control cucumber powdery mildew disease and their residues in treated fruits
Other Title(s)
دراسات مقارنة لدور الكبريت النانو و بعض المبيدات الفطرية في مكافحة مرض البياض الدقيقي في نبات الخيار و تقدير متبقياتها في الثمار
Joint Authors
al-Qalli, Asma Mahmud A.
Abd al-Rahman, Halah Rashad
Source
Alexandria Science Exchange Journal
Issue
Vol. 41, Issue 1 (31 Mar. 2020), pp.53-60, 8 p.
Publisher
Publication Date
2020-03-31
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Topics
Abstract AR
يهدف هذا البحث الى دراسة امكانية استخدام الكبريت النانو (حبيبات متناهية الصغر) بالمقارنة بمستحضر الكبريت المعدني و مبيدين فطريين آخرين وذلك لمكافحة مرض البياض الدقيقي الذي يصيب نبات الخيار.
كما تم تقدير متبقيات تلك المركبات في ثمار الخيار لبيان الفترة الي يوصى بعدها بجمع المحصول بعد المعاملة.
و بإختبار الخواص الطبيعية الكيميائية لجزيئات النانو لمركب الكبريت باستخدام الميكروسكوب الإليكتروني الناقل بالاضافة الى أشعة اكس و التي أثبتت أن هذا الكبريت هو S8 و الذي يتميز بحبيبات بللورية الشكل حيث يتراوح طول حبيباتها بين 12.2 الى 23.5 نانومتر.
و المبيدات الفطرية التي تم دراستها هي
Abstract EN
The present work was carried out to explore the potential use of the new approach of sulfur nanoparticles compared with bulk sulfur and two other systemic fungicides to control powdery mildew in cucumber.
Also, the Fungicide residues in cucumber were estimated.
Examination of physico-chemical properties of the tested nanoparticles was done by using transmission electron microscope and X-Ray diffraction, which proved that the tested sulfur was sulfur (S8) with the crystal system and its anorthic and size ranged from 12.2 to 23.5 nm.
The three tested fungicides, Super sardo (azoxystrobin), Muringo (diniconazole), Thiofan (bulk sulfur) and Nanosulfur (Snp) were sprayed three times to cucumber growing in pots in a greenhouse.
After 3rd spray, the efficacy of the aforementioned tested fungicides was 74.0, 68.8, 42.7 and 60.9% , respectively.
The area under disease progress curve (AUDPC) in case of azoxystribin, bulk sulfur and Snp increased after 1st and 2nd sprays, but it decreased after 3rd treatment.
diniconazole recorded continues increase in disease area.
Nanosulfur caused the highest number of fruits/plant, mean weight of fruits/plant and mean weight of one fruit and followed by azoxystribin and diniconazole, while bulk sulfur caused the lowest cucumber yield parameters.
Assessment of residues of the four tested fungicides 2, 5 and 8 days after the third spray, showed that cucumber fruits can be collected two days after treatment with azoxystribin, bulk sulfur and Nanosulfur, while those treated with diniconazole can be harvested five days after spray.
American Psychological Association (APA)
Abd al-Rahman, Halah Rashad& al-Qalli, Asma Mahmud A.. 2020. Comparative studies on nanosulfur and certain fungicides to control cucumber powdery mildew disease and their residues in treated fruits. Alexandria Science Exchange Journal،Vol. 41, no. 1, pp.53-60.
https://search.emarefa.net/detail/BIM-1103225
Modern Language Association (MLA)
Abd al-Rahman, Halah Rashad& al-Qalli, Asma Mahmud A.. Comparative studies on nanosulfur and certain fungicides to control cucumber powdery mildew disease and their residues in treated fruits. Alexandria Science Exchange Journal Vol. 41, no. 1 (Jan. / Mar. 2020), pp.53-60.
https://search.emarefa.net/detail/BIM-1103225
American Medical Association (AMA)
Abd al-Rahman, Halah Rashad& al-Qalli, Asma Mahmud A.. Comparative studies on nanosulfur and certain fungicides to control cucumber powdery mildew disease and their residues in treated fruits. Alexandria Science Exchange Journal. 2020. Vol. 41, no. 1, pp.53-60.
https://search.emarefa.net/detail/BIM-1103225
Data Type
Journal Articles
Language
English
Notes
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Record ID
BIM-1103225