MANAGEMENT OF CUCUMBER DOWNY MILDEW DISEASE BY SOME PLANT WATER EXTRACTS AND PLANT ESSENTIAL OILS

Amar, Mohamed Mohamed; Ibrahim, Sanaa; El-shennway, Mohamed Zaky; Ismiel, Abdelmaksoud

doi:10.21608/mjapam.2023.221682.1020

MANAGEMENT OF CUCUMBER DOWNY MILDEW DISEASE BY SOME PLANT WATER EXTRACTS AND PLANT ESSENTIAL OILS

Document Type : Original Article

Authors

¹ Agriculture Botany Department, Faculty of Agriculture, El-Menofia University

² Agricultural Botany Department, Faculty of Agriculture, Menoufia University, Egypt.

³ Department of Agricultural Botany (Plant pathology) , Faculty of Agriculture, Menoufia University, Egypt.

10.21608/mjapam.2023.221682.1020

Abstract

ABSTRACT: The efficacy of three water plant extracts ie; Mint (Mentha villosa), Basil (Ocimum basilicum )and Aloe vera (Aloe barbadensis) with three concentrations (2 , 4 and 6 ml/ L) and plant essential oils of three plants Castor (Ricinus communis), Thyme ( Thymus vulgaris) and Mint (Mentha villosa) with three concentrations (2.5 , 3.5 and 4.5 ml/L) were studied under greenhouse conditions during two successive seasons (2019-2020 and 2020-2021) on cucumber downy mildew disease management. The obtained results indicated that, application of plant extracts and essential oils significantly reduced the disease severity and increase the yield production (number of fruits / plant and average fruit yield production / plant). For the water plant extracts the Alo vera (6 ml/L concentration) was the best treatment, while the Basil (2 ml/L concentration) showed the lowest effect. For the essential oils, Castor oil (4.5 ml/L) gave the highest effect on decrease the disease severity and increase the yield while the Mint oil (3.5 ml/L) showed the minimum effect.

Keywords