(IPPM) in Vegetables - Vegetableipmasia.org

Resource Manual on IPPM in Vegetable
World Education Philippines, Inc.
kohlrabi, Brussels sprouts, Chinese cabbage, all mustards, turnips, rutabagas,
radishes etc. Cruciferous weeds include wild radish, wild mustards etc. Also,
crucifer plant waste should not have been dumped on these fields.
2) Soil pH should be 6.5 or higher. Soil pH over 6.8 is necessary to manage club
root. The application of 1705.5 kg/ha. of hydrated lime, 6 weeks prior to planting
is recommended for soils with pH less than 7.5 for club root control when
planting club root susceptible radishes.
e. Fertilizer
Use a drill with a 5 or 10 cm. scatter shoe to drop 24 seeds 1.27 cm. deep per foot
of row. Space rows 20 cm. apart. Growers commonly apply a mixture of sawdust
and chicken manure to a depth of 1 to 2 cm. over the planted beds.
In-row spacing should be 10-15 cm., with rows 60-90 cm. apart. Adjust planting
rates accordingly. Some Chinese radishes can weigh 45 kg. These would be
spaced 60-90 cm. apart in rows 36-48 inches apart.
A soil test is the most accurate guide to fertilizer requirements. The following
recommendations are general guidelines.
Maintain a pH 6.5-7.0, adding lime or dolomitic lime (if magnesium is needed) as
indicated by soil test.
For red globe radish, poultry manure is often used to supply 57-85 kg N/ha. Care is
needed to guard against excessive N is particularly bad during periods of warm, wet
weather. Buildup of soil N during the season results in progressively larger tops, so N
applications should be reduced as the season progresses.
Nitrogen rates for radish should be 148-170kg/ha. Divide this among several
applications, applying two thirds of the total during the last half of the growth period.
Adjust N rates and irrigation as necessary to maintain vigorous, uniform growth.
In the absence of a soil test, for both red globe and daikon radish, P, K, S and B, should
be applied as follows:
Phosphate: 148-170 (P 2 0 5 ) kg/ha.
Potash: 114-170 (K 2 0) kg/ha.
Sulfur: 34-57 kg/ha. per season
Boron: 1-6 kg/ha., or as needed according to soil test.
If fertilizer is to be banded at time of seeding, rates greater than 68kg/ha of potash should
be broadcasted and incorporated before seeding.
f. Irrigation
Globe radishes are shallow rooted and quick growing, requiring frequent, uniform
irrigation for optimum growth and tenderness. Earliest plantings may receive sufficient
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