Integrated Management of Alternaria alternata in Tomato and Pepper: Leaf-Environment, and Cultivar Interactions

Background: Studies have displayed that spraying organic acids, bio-fungicides, and ionic-rich solutions on tomato and pepper leaves can minimize their fungal infections by fostering mineral uptake and immunity. Methods: The factorial design of two components was applied in this growing chamber trial. The initial component was the cultivar, varieties of Mobil, Korall, and Tyking F1 for tomatoes, while varieties of Carma, Fokusz, and Bobita F1 for bell pepper, and the secondary one was the prophylactic leaf nourishment. The sprays used were magnesium sulfate-hydrate of 112.4 mmol.L-1, 2.17 mmol.L-1 acetylsalicylic acid, sodium hydrogen-carbonate of 112.4 mmol.L-1, and hydrogen peroxide of 217.4 mmol.L-1. The variables recorded were the disease incidence and severity index, with three replicates for each record. Results: The magnesium sulfate-hydrate 112.4 mmol.L-1 treatment recorded the highest Alternaria alternata infections in the tomato Mobil. The lowest numerous disease indices were for the drought-sensitive Tyking F1 sprayed with acetylsalicylic acid 2.17 mmol.L-1. Spraying Mobil with magnesium sulfate 112.4 mmol.L-1 produced the highest blight infections. Acetylsalicylic acid 2.17 mmol.L-1 also headed to the lowest infection values in the Carma pepper. The outputs detected that the highest measured indices were for the Bobita F1 sprayed with magnesium sulfate. Conclusion: Horticulturists should practice cultivating Tyking F1 tomato and Carma pepper with prophylactic leaf nutrition of acetylsalicylic 2.17 mmol.L-1 in the protected horticulture of expected air microclimate of not lower than 25 ℃ and 80% humidity. Farmers should adopt extra production-improving factors outlined in recent research.