RADDISH (Raphanus sativus)
Plant Characteristics
Raddish is a root crop belonging to the family Brassicaecae.
Varieties
Japanese White, Arka Nishanth, Pusa Chethki, Pusa Reshmi, Pusa Desi and Bombay Red Long
Seeds And Cultivation
Radish can be grown in high ranges from June to January. Well drained sandy loam soils are best suited for the crop.
Seed rate is 7 to 8 kg per hectare. It is usually grown on ridges to facilitate good root production. Ridges of about 20 cm height are taken 45 cm apart and plants are grown 10 cm apart on the rows. The seed is mixed with fine sand and sown in rows by hand, covered with soil to make it firm around it.
It is necessary that enough soil moisture is available to help uniform seed germination and growth of plant. Thinning may be done at 10 cm distance as in carrot
Water Management
Raddish requires sufficient moisture in the soil for germination and proper root development.
Nutrient Management
Apply 20 t/ha FYM as basal. N: P2O5: K2O 75:37.5:37.5 kg/ha is the fertilizer requirement. Full dose of P2O5 and K2O and half dose of N are applied as basal. Remaining half dose of nitrogen is applied as topdressing when the plant starts growing vigorously.
Weed Management
Weeding should be done at regular intervals to keep down weeds. Shallow hoeing is necessary to facilitate root growth. When the roots start growing, earthing up should be done.
Pest Management
Aphids, flea beetle and mustard saw fly are the important pests of raddish. To control these pests, apply Malathion @0.01 %.
Disease Management
Damping off, white rust and alternaria blight are the major diseases affecting raddish crop. To control these diseases, seeds are to be treated with hot water at 50o C for 30 minutes and then with Captan @2g/kg of seed.
Harvesting
Light irrigation is given before harvest.tender roots are pulled out with tops.
Average Yield
Temperate types yield about 7-9 tons/ha. And the Tropical types 20-35 tons/ha.