Antifungal activity of essential oil and emulsifiable concentrates of citronella and lemon grass against Phomopsis vexans

IF 1 Q3 PLANT SCIENCES Archives of Phytopathology and Plant Protection Pub Date : 2023-07-21 DOI:10.1080/03235408.2023.2242078

Pooja, U. Bhardwaj, Ramandeep Kaur, Rupeet Gill

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Abstract

Abstract The present study aims to develop eco-friendly Emulsifiable Concentrates (EC) using citronella and lemon grass essential oil (EO) and evaluate its antifungal activity against Phomopsis vexans in Solanum melongena. Among nine prepared formulations, F1 formulation with EO (40%) + vegetable oil (50%) and emulsifier blends (10%) with hydrophilic-lipophilic balance value (12.86) were found suitable for both EO formulations. These formulations (CF1 and LF1) performed well in terms of emulsion stability, cold test, accelerated storage and foam test indicating feasibility for their commercial production. In laboratory studies, at 0.1% concentration, citronella essential oil, lemon grass essential oil and their EC formulations CF1 and LF1 inhibited the growth of P. vexans with EC50 values 0.0087, 0.0098, 0.009 and 0.0126, respectively. Further, under field conditions, CF1 performed better than LF1 formulation in terms of minimum disease severity (32.22%). Hence, EC formulations can be used as natural and eco-friendly fungicide for P. vexans control.

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香茅和柠檬草精油及乳油对黄颡菌的抗菌活性

摘要本研究旨在利用香茅和柠檬草精油（EO）开发环保型乳化浓缩物（EC），并评价其对茄属植物中黄曲霉的抗真菌活性。在九种制备的制剂中，发现EO（40%）+植物油（50%）的F1制剂和亲水-亲脂性平衡值（12.86）的乳化剂混合物（10%）适用于这两种EO制剂。这些配方（CF1和LF1）在乳液稳定性、冷试验、加速储存和泡沫试验方面表现良好，表明其商业生产的可行性。在实验室研究中，在0.1%浓度下，香茅精油、柠檬草精油及其EC制剂CF1和LF1抑制了P.vexans的生长，EC50值分别为0.0087、0.0098、0.009和0.0126。此外，在田间条件下，CF1在最低疾病严重程度（32.22%）方面比LF1制剂表现更好。因此，EC制剂可作为天然环保的杀菌剂用于控制P.vexans。

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来源期刊

Archives of Phytopathology and Plant Protection Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

2.20

自引率

0.00%

发文量

100

期刊介绍： Archives of Phytopathology and Plant Protection publishes original papers and reviews covering all scientific aspects of modern plant protection. Subjects include phytopathological virology, bacteriology, mycology, herbal studies and applied nematology and entomology as well as strategies and tactics of protecting crop plants and stocks of crop products against diseases. The journal provides a permanent forum for discussion of questions relating to the influence of plant protection measures on soil, water and air quality and on the fauna and flora, as well as to their interdependence in ecosystems of cultivated and neighbouring areas.