To cater the micronutrient need of the plant and to correct their deficiency, apply 50g agricultural lime and 25g magnesium sulphate per plant.
For Fusarium wilt drench the soil around the plant with 0.2% Carbendazim as a prophylactic measure.
Panama Wilt:Fusarium oxysporum f.sp cubense
Symptom:
- Externally, the first obvious signs of disease in most varieties are wilting and a light yellow colouring of the lower leaves, most prominent around the margins. They eventually turn a bright yellow colour with dead leaf margins.
- Splitting of pseudostem base is a characteristic symptom.
- When a cross-section is cut, the discolouration appears in a circular pattern around the centre of the rhizome where the infection concentrates due to the arrangement of the vessels. As symptoms progress into the pseudo-stem, continuous lines of discolouration are evident when the plant is cut longitudinally
- The disease is soil borne and the fungus enters the roots through the fine laterals.
- The pathogen is easily spread by infected rhizomes or suckers, farm implements or vehicles, irrigation water
Yellowing of the lower leaves Drying of leaves
MANAGEMENT:
- Proper care should be given when planting susceptible cultivators by selecting healthy suckers from disease fields.
- Remove and destroy infested plant material after harvest.
- Application Pseudomonas fluorescens @ 2.5kg/ha bactericide can also be applied along with farmyard manure and neem cake.
- About 60 mg of Pseudomonas fluorescens (in a capsule) can be applied in a 10 cm deep hole made in the corm.
- Paring (pralinge removal of roots and outer skin of corm) and dipping of the suckers in clay slurry and sprinkled with Carbofuran granules at 40g/corm
- Soil drenching of Carbendazim 0.1 per cent solution around the pseudostem at bimonthly intervals starting from five months after planting
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