Brassica oleraceae var.caulorape
Climate requirements/ Areas suitable for cultivation
Water supply/ Irrigation
Causal Organism: plasmodiophora brassicae
- Swelling or malformation on the main lateral roots those are called club roots and those galls appear like clubs or spindles on the roots.
- The crop can be completely destroyed due to damage
- Keeping the soil at a slightly basic pH of 7.1 – 7.2 by the addition of agricultural lime and apply 2-4 t/ha of lime to raise soil pH.
- Use of disease free planting materials
- As well as the integration of crop rotation
Causal Organism : Erysiphe cruciferarum
- Small white patched on upper and lower surface which may also show purple blotching , later powdery layer can be seen which coats the leaves
- leaves become chlorotic and drop from plant
- Plant resistant varieties
- rotate crops
- Remove all crop debris after harvest
- Remove weeds
- Application of surface sprays, dusts or vapors
Causal Organism: Peranospora parasitica
- Infections of downy mildew begin as irregular yellow patches on leaves
- These chlorotic lesions later turn brown
- If conditions are favorable white fluffy growth of the fungus develops on the undersides of leaves
- Covering the nursery to protect it from rain
- In the morning , remove the cover and allow get the sunlight
- Apply of a fungicide containing tebuconazole (5 ml for 10 liters of water) for once is recommended.
Harvesting and Processing
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