Effects of Plant Extracts on Controlling Seed Borne Fungi of Okra (Abelmoschus esculentus L. Moench)

Abstract

An experiment was conducted using farmer's okra (Abelmoschus esculentus L. Moench) seeds in Seed Pathology Centre, Bangladesh Agricultural University, Mymensingh to determine the efficacy of plant extracts (garlic, allmanda, neem, ginger and biskathali extracts) and vigour index of seedling for controlling the seed-borne fungal diseases of okra. In the laboratory experiment, the prevalence of seed-borne fungi associated with farmer's okra seed investigated by blotter method. The identified fungi species in the collected seeds were Colletotrichum dematium, Macrophomina phaseolina, Fusarium oxysporum, Aspergillus flavus, Aspergillus niger, Penicillium spp. and Rhizopus spp. The test seed materials were treated with garlic tablet, allmanda tablet @ 1:1 and 2:1 w/v and neem extract, ginger extract and biskathali extract @ 1:1 and 1:2 w/v for each to control pathogens with control treatment. The significantly highest germination (62.5%) and lowest incidence of pathogen (5.25%) were recorded in garlic tablet @ 2:1 w/v treated seeds. The okra seeds treated by garlic tablet @ 2:1 w/v was also showed the higher vigour index (545.60%) compare to untreated seed (423.40%).

Evaluation of different concentration of plant extracts as seed treatment to manage seed mycoflora of okra

“…and sterile mycelium both was (0.89 %) and sterile mycelium (0.53%) was associated with lowest frequency in seed (Table6). Similar result was observed bySaha et al (2014)…”

“…5). [18] . Seed soaking in different concentration (%) in ginger extract did not show any significance in controlling microbial frequencies.…”

Physiological and sanitary potential of peanut seed treated with cinnamon powder

“…Aspergillus is a common mould in tropical and sub-tropical countries and causes aflatoxin contamination as a result of moulding of badly stored commodities, such as groundnut, cereal and cotton seeds. Saha et al (2014) concluded that seeds like garlic tablet, allamanda tablet or neem leaf extract can be recommended for okra seed treatment to get higher germination and healthy seedling that will eventually produce more fruit.…”