Document Type : Original Article
Authors
1
Medicinal and Aromatic Plants Research Department, Horticulture Research Institute, Agricultural Research Center (ARC), Giza, Egypt.
2
Medicinal and Aromatic Plants Research Department, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt
3
Medicinal and Aromatic Plants Research Department, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt.
4
Central Lab. of Organic Agriculture (CLOA), Agricultural Research Center (ARC), Giza, Egypt
Abstract
Sage is one of the most appreciated plants for its plethora biologically active. But, root rot disease, a prevalent fungal disease that can afflict a variety of plants, including sage, leads to the death of plants and a decrease in yield, which has prompted the exploration of alternative strategies for disease control. The current research was conducted over the consecutive growing seasons of 2022 and 2023 at the Al-Quassassin Research Station, Agricultural Research Center (ARC), Ismailia Governorate, Egypt. The objective was to investigate the impact of different treatments, Trichoderma harzianum, Bacillus subtilis, angel yeast, humic acid, compost tea and their combinations, on the management of sage root rot disease and its influence on productivity within an organic farming system. In greenhouse study results, Rhizoctonia solani proved to be the most aggressive soil borne disease, causing the highest incidence rates at 40.0%, 35.0% and 20.0% for pre-, post-emergence damping-off and root rot, respectively. Sclerotium rolfsii followed closely, with incidence rates of 35.0%, 30.0%, and 12% for these respective stages. The antagonists’ isolates exhibited significant variations in their capacity to inhibit the in vitro linear growth of both tested pathogenic fungi. T. harzianum demonstrated the most substantial reduction in mycelial growth, with an impressive 80.95% decrease, closely trailed by T. album at 80.05%, B. subtilis at 74.30%, and B. megaterium 64.37%, on average. In the field experiment, all treatments resulted in significant reduction of the disease incidence and severity of sage root rot and promoted the growth parameters, oil and crop yield of sage plants in both seasons. T. harzianum combined with Compost tea demonstrated the highest efficacy in controlling root rot of plants, resulting in the highest yield and quality of sage.
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