Results 41 to 50 of about 613 (155)

Essential oils: an alternative approach to management of powdery mildew diseases

Phytopathologia Mediterranea, 2014
In recent years there has been growing interest in the application of plant-derived substances in agriculture as alternatives to the use of pesticides, in order to obtain healthy crops and more environmentally sustainable crop production systems.
Elena STURCHIO, Lucia DONNARUMMA, Tiziana ANNESI, Filomena MILANO, Laura CASORRI, Eva MASCIARELLI, Miriam ZANELLATO, Claudia MECONI, Priscilla BOCCIA   +8 more
doaj   +1 more source

Positive involvement of HCO3– in modulation of melon resistance to powdery mildew

Vegetable Research, 2023
Inorganic salts such as KHCO3 are considered as potential powerful weapons for protecting plants from disease challenges, while their effects remain largely unknown on melon (Cucumis melo L.) resistance to powdery mildew caused by Podosphaera xanthii. In
Jianquan Wang, Xiaoye Yu, Jinxiang Hu, Qifang Wang, Jinhui Zheng, Xiaoyu Yang, Qinghua Shi   +6 more
doaj   +1 more source

Modification of the existing maximum residue levels for prothioconazole in various crops. [PDF]

EFSA J
Abstract In accordance with Article 6 of Regulation (EC) No 396/2005, the applicant Sipcam Oxon SpA submitted a request to the competent national authority in Greece to modify the existing maximum residue levels (MRLs) for the active substance prothioconazole in various crops.
European Food Safety Authority (EFSA), Bellisai G, Bernasconi G, Cabrera LC, Castellan I, Del Aguila M, Ferreira L, Greco L, Leuschner R, Mioč A, Nave S, Reich H, Ruocco S, Scarlato AP, Szot M, Theobald A, Tiramani M, Verani A, Zioga E.   +18 more
europepmc   +2 more sources

Nitrate availability influences powdery mildew resistance and secondary metabolism in Gerbera hybrida

Frontiers in Plant Science
Powdery mildew (Podosphaera xanthii) is a major disease affecting gerbera (Gerbera hybrida, Asteraceae), and nitrogen availability is a key factor influencing disease development. Our objective was to determine how nitrate availability affects resistance
Estuardo J. Hernandez Olesinski, Anna Mascellani Bergo, Tommaso Barbagli, Jaroslav Havlik, Leo F. M. Marcelis, Kirsten A. Leiss   +5 more
doaj   +1 more source

Biological control of cucumber powdery mildew (Podosphaera xanthii) (Castagne) under greenhouse conditions

Egyptian Journal of Biological Pest Control, 2020
Cucumber powdery mildew disease caused by Podosphaera xanthii (Castagne) U. Braun & Shishkoff severe disease-causing yield losses worldwide. This research study was conducted to evaluate the efficacy of the tested bio-agents, Trichoderma harzianum, T ...
Ehab A. D. Sarhan, Michael H. F. Abd-Elsyed, Azza M. Y. Ebrahiem   +2 more
doaj   +1 more source

Occurrence of Powdery Mildew Caused by New Race 2F of Podosphaera xanthii on Cucumber in Korea

Research in Plant Disease, 2020
Powdery mildew is a common and serious disease of the Cucurbitaceae including cucumber (Cucumis sativus) in most areas of the world. To identify causal agents of the powdery mildew and their physiological race(s), we collected cucumber leaves displaying ...
Young-Ah Kim, A-Ram Jeong, Min Jang, Chang-Jin Park   +3 more
doaj   +1 more source

Identificación molecular de los tipos de compatibilidad en poblaciones de Podosphaera xanthii (Erysiphaceae) infectando cucurbitáceas en Veracruz, México

Acta Botanica Mexicana, 2022
Antecedentes y Objetivos: La fase sexual de Podosphaera xanthii, reconocida por la presencia de casmotecios, se ha observado esporádicamente. La ausencia de uno de los tipos de apareamiento o de compatibilidad (TC) MAT1-1 o MAT1-2, o una proporción ...
Dolores González, Rosario Gregorio-Cipriano   +1 more
doaj   +1 more source

Biological control of Podosphaera xanthii the causal agent of squash powdery mildew disease by upregulation of defense-related enzymes

Egyptian Journal of Biological Pest Control, 2018
Squash (Cucurbita pepo L.), one of the most important vegetable crops for human nutrition all over the world, is infected by many diseases, particularly powdery mildew caused by Podosphaera xanthii (syn.
Yaser M. Hafez, Asmaa S. El-Nagar, Abdelnaser A. Elzaawely, Said Kamel, Hanafey F. Maswada   +4 more
doaj   +1 more source

Elevated Air Temperature Suppresses Powdery Mildew Development in Cowpea

Plant Pathology, Volume 75, Issue 4, July‐August 2026.
A temperature range of 20°C–26°C–33°C favours the severity of powdery mildew in cowpea, promoting the reproductive activity of the pathogen. An increase of 4.8°C has a suppressive effect on the progression of powdery mildew in cowpea. ABSTRACT Cowpea production can be severely affected by powdery mildew, a disease whose epidemiology is highly ...
Layana Alves do Nascimento, Márcia Vitória de Macedo, Tailane Amorim Luz, Jadson Lima da Silva, Camila Barbosa dos Santos, Samuel Cavalcante do Amaral, Weslley Oliveira da Silva, Natoniel Franklin de Melo, Emília Hamada, Francislene Angelotti   +9 more
wiley   +1 more source

In Vitro SDHI Fungicide Insensitivity and Mutations in Sdh, β‐Tubulin and Cyp51 of Clarireedia spp., Causing Dollar Spot in Turfgrass in Georgia, USA

Plant Pathology, Volume 75, Issue 4, July‐August 2026.
Amino acid substitutions R61K and E63A in SdhD gene and E198A in β‐tubulin gene in Clarireedia spp., causal agent of dollar spot in turfgrass, were linked to reduced boscalid and thiophanate‐methyl sensitivity, respectively. ABSTRACT Dollar spot, caused by Clarireedia spp., diminishes turf quality, affecting both aesthetics and sport playability on the
Md. Aktaruzzaman, Bikash Ghimire, Harshita Saxena, Moumita Majumdar, Jonathan E. Oliver, James W. Buck, Alfredo D. Martinez‐Espinoza, Bochra A. Bahri   +7 more
wiley   +1 more source