Crops (Kancagan) are established and maintained in
rubber and oil palm plantations for conserving the
soil and for improving or maintaining the soil
structure and fertility. Cover crops are leguminous
creepers, which are easy to establish. They are the
most desirable species of plants that can be used as
ground covers in rubber and oil palm plantations,
because they have the ability to fix atmospheric
nitrogen which can later be used by the immature
rubber and oil palm plants, besides the other
characters common to all cover plants. Also such
legume covers keep down the soil temperature during
summer, they suppress the weeds and help in the
proper utilization of fertilizers applied to the
Cover Crop Seeds – Kancagan
Pueraria Javanica A very
popular cover crop worldwide. It is a vigorous
twiner and creeper that can be propagandized by
seeds and cuttings. The Plant can stand strong sun
and smothers weeds ever Chromolena. The seed rate is
about 3-4.5 kg/ha.
Calopogonium mucunoides It is a
twinner and creeper with tolerance for poor soils.
The legume cuts off during dry months. It is a
prolic seeder; seed rate is 3-4.5 kg per ha.
Centrosema pubescens It is a perennial climber that
can grow in shades. It is a slow grower, not
tolerant to wet conditions and smothers other weeds.
The seed rate is 3-4.5 per ha.
Bracteata A wild legume
Mucuna bracteata collected is
drought resistant and shade
tolerant. Nitrogen fixing capacity
of this was found to be high. It
grows fast and covers the field very
quickly thus, it suppresses all
weeds. The seed rate is 200g for
planting in 420 points (1 ha).
The desirable characteristics of
||Very vigorous growth
||Easy establishment and
low seed rate
||Presence of alleolo
chemical to enhance competitive ability
against weed growth
||High biomass productions
and chemical Requirements for its
|| Tolerance to pest
control against soil erosion
Among the four, Pueraria Javanica
is the best as it is easier to establish. Both
Pueraria and Mucuna grow faster and smoother weeds
better than others under the conditions in South
Pretreatment of Mucuna Bracteata
As a part of value addition to the
bracteata seeds exported by us, we have been
constantly experimenting with methods to improve the
germination of the seeds.
Described below is the method
that we found to give the best results, so far and
improves germination by about 50-75%:
1. Take cleaned Mucuna bracteata
seeds (free from soil and other debris) in an acid
resistant container (Glass or Plastic).
2. Add Concentrated Sulphuric
acid (85%) gently while stirring with a wooden stick
till a thin layer of acid coating is formed over the
3. Approximately for every
kilogram of seeds 50 cc. Of Sulphuric acid is
4. Continued the stirring for 30
minutes. By this time the outer hard coating which
prevents the absorption of water by the seeds is
dissolved and forms a black substance.
5. Transfer the treated seeds to
another container/bucket containing cold/normal
water. Please ensure that the seeds are added to the
water and not water to seeds.
6. Decant the water and add fresh
7. Now rub the seeds between two
hands to remove the scars on the seeds.
8, Repeat this for two more times
till the seeds are free from acid.
9. Spread the seeds over any
absorbent surface, like sack and cloth and dry them
10. Sow them as early as
We have also observed that the
following method of sowing gives the best results in
case of Mucuna bracteata.
1. Plant Density-200 to 300 grams
2. Mark the areas in which seeds
are to be planted.
3. Dig a one cubic feet pit.
4. Fill it with loose sand mixed
with Supplements for early nodulation/growth.
5. Sow two seeds per pit, taking
into consideration, 50% germination probability.
Further reference on Mucuna bracteata go to
Nadampadom Rubber Estate since
1951 exports Cover Crop seeds, Tree seeds, Shrub
seeds, Shade seeds, and grass seeds. It is a
subsidiary of Chemmanur group of companies. The
seeds are collected from the disease free growing
fields, plantations and estates.
Nadampadom Rubber Estate exports
seeds to different parts of the world. They include
Singapore, Malaysia, Indonesia, Thailand, Papua New
Guinea, Holland, Brazil, Ghana, Cameroon, Ivory
Coast and Uganda.