Knol khol is normally propagated though seeds, this can grow in all types of soil, but thrives well in sandy loam and clay loam soil. harvest knol khol once swollen stem reaches 5-6 cm.
Scientific name:( Botanical name: Brassica oleracea.)
Common Names: Kohlrabi -Hindi, Gedde Kosu/Navil kosu-Kannada , Noolkol-Telugu,
Soil and climatic requirement: Soil : Can grow in wide range of soil, a soil rich in manures and fertilizer produce good knob. for Early season crop sandy loam soils are best. and for late season clay or silt loam are best. Ideal pH 5.5-7.0. Cliamte: It is cool season crop, thrive well in relatively cool moist climate. This can withstand extrem cold and frost condition, optimum temperature 15-32 degree C.
Crop Duration: 120-150 Days.
Planting season: last week of august -last week of November
Planting type: Transplanting
Spacing: 25 P-P x 30 R -R
Depth of sowing: 1-5-2.0 cm
Germination period: 7-21 days
Hours of sunlight required: At least 6 hrs.
Irrigation: Irrigate immediately after transplanting and continue this for 4-5 days. Subsequent irrigation should be given at an interval of 7-8 days.
Companion crops:Beets, celery, herbs and onions