Al-Dulaimi, Fahad K.Y. and Al-Tarjuman, Janan K. and Mohammed, Nour Abdelkhaleq and Abdullah, Raeed Mejbel (2026) Evaluation of the effectiveness of selected wild plant extracts in reducing early blight disease in tomatoes caused by Alternaria Solani. World Journal of Agriculture and Urbanization, 5 (3). pp. 28-35. ISSN 2835-2866

Text WJAU_1385_Fahad+K.Y.+Al-Dulaimi_Evaluation+of+the+effectiveness.pdf - Published Version Download (471kB)

Abstract

Early blight disease caused by Alternaria solani is one of the most important diseases affecting tomatoes and leads to significant losses in agricultural production, necessitating the search for environmentally friendly and effective control methods. In this study, the effectiveness of plant extracts from colocynth fruits (Citrullus colocynthis), sunflower leaves and flowers (Helianthus annuus), and calotropis leaves and fruits (Calotropis procera) against A. solani was evaluated, along with their impact on the vegetative characteristics of the plant. The fungal spore suspension was prepared at a concentration of 1 × 10⁵ spores/ml, and the extracts were prepared at concentrations of 25, 50, and 100 mg/ml. The experimental results showed that all extracts significantly reduced fungal growth, and the inhibition rate increased with higher concentrations. The bitter apple extract recorded the highest effectiveness at 100 mg/ml with an inhibition rate of 82.5%, followed by the jatropha extract (77.2%) and the sunflower extract (68.4%). In the greenhouse experiment, the extracts reduced the severity of early blight, with the bitter apple extract at 100 mg/ml being the most effective (16.2% infection, 81% vitality), showing a significant improvement in plant height, number of leaves, and percentage of healthy leaves compared to the infected control, with an effect close to the chemical pesticide Mancozeb. These results show that plant extracts, especially colocynth, possess antifungal activity and improve seedling growth, making them a promising alternative to chemical pesticides within integrated pest management programs, and supporting sustainable agriculture.

Item Type:	Article
Subjects:	A General Works > AI Indexes (General)
Depositing User:	admin eprints
Date Deposited:	29 Jun 2026 07:30
Last Modified:	29 Jun 2026 07:30
URI:	http://eprints.umsida.ac.id/id/eprint/16676

Actions (login required)

View Item