(IPPM) in Vegetables - Vegetableipmasia.org

Resource Manual on IPPM in Vegetable
World Education Philippines, Inc.
4. RADISH (Raphanus sativus)
a. Introduction
Radishes take many forms and are used in a large
variety of ways world-wide. The common red and
icicle types are commonly used fresh as salad
vegetables and garnish in the U.S. Oriental types,
such as the elongated and round daikon radishes,
are less well-known in the U.S. but are important
staple foods in countries like Korea, Japan, Taiwan,
and others in Asia, and by these ethnic groups in the
U.S. These types are used fresh, pickled (as is
Kimchi), dried for future use, and cooked in
countless Oriental dishes. Seeds of radish are
sprouted and these sprouts are another important
food in these Asian countries.
Many varieties of radish exist. Some are unique novelties, others are popular for home
garden use, and still others are important in commerce.
b. Soil
Radishes do best on either light mineral soils or muck soils but may be grown on a wide
range on soils. Daikon radish requires deep, friable soil for best quality roots.
Table 16. Growth Stages of Radish
Growth Stage
No. of Days
Seedling
Recovery
Rooting
Maturity
10-15 Days after sowing (DAS)
5-7 Days after Transplanting (DAT)
25-30 DAT
30-45 DAT
c. Seed and Treatment
Radish seed numbers approximately 70-140 per gram depending on type and variety. Use
hot-water treated seed and fungicide treat seed to protect against several serious seed
borne diseases. Hot water seed treatments are very specific (50 O C exactly, for 25 to 30
minutes; the wet seed then quickly cooled and dried). The seed treatments are best done
by the seed company.
d. Seeding
Important: Before planting this crucifer crop, consider the following important factors:
1) No crucifer crop, or related weed has been present in the field for at least 2 years,
4 years preferable. Crucifer crops include cabbage, cauliflower, broccoli, kale,
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