MADIKERI: With ginger farming expanding across Kodagu, particularly in the northern regions, researchers at the Indian Institute of Spice Research (ICAR) have detected a previously unknown fungal disease affecting crops. To curb its spread, ICAR has released preventive measures for farmers.
Scientists at ICAR’s Kozhikode research center have identified Pyricularia spp, a fungal pathogen previously known for causing blast disease in paddy, now making its first appearance in ginger. Experts warn that the infection has severely impacted Kodagu’s ginger plantations in 2024.
Symptoms begin with leaf discoloration, starting as yellow patches with dark green or black specks. Once established, the disease advances swiftly, engulfing entire fields within hours, leading to substantial yield losses and plant die-off, according to ICAR’s lead scientist in Appangala.
While rhizomes remain largely intact, premature leaf withering hinders proper development, causing an estimated 30% drop in rhizome weight. Kodagu’s August-September climate, especially morning dew, has accelerated fungal growth, worsening its spread across multiple regions.
Experts recommend treating seed rhizomes with fungicides like Propiconazole or a mix of Carbendazim and Mancozeb by soaking them for 30 minutes before storage. Immediate application is crucial when spotting early symptoms such as tiny black-green spots surrounded by yellowing leaves.
Farmers in affected zones are advised to pause ginger cultivation temporarily. Meanwhile, researchers are analyzing the fungus’s traits and environmental factors to develop long-term solutions.
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