Clubroot: Plasmodiophora brassicae
Symptoms
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Stunting and yellowing of plants
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Leaves become yellowish and wilt on hot days.
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Club like swelling of root and root lets
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Club root is particularly prevalent on soils with a pH below 7, whereas it has been observed that the disease is often less serious on heavy soils and on soils containing little organic matter.
Management
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Soil fumigation with Methly bromide 1kg/10m 2 followed by covering with plastic film.
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Seed treatment with Captan/Thiram 4g/kg, followed by T.viride 4g/kg.
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Application of lime 2.5 t/ha.
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Soil drenching with Copper oxychloride 0.25%.
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