No Specific requirements. Land should be free from
Brinjal is partially self- and corss-pollinated , but self-pollination
is more common. The extent of natural corssing depends upon insect
activity and has been recorded from 0to 48 per cent.
For pure seed
production, seed fields must be isolated from other variety brinjal
fields, and fields ofsame vareity not conforming to varietal purity
requirements of seed certification at least by two hundred metres for
foundation seed production, and one hundred metres forcertified seed
Time of Sowing
Plains : February to March, June to July,
October to November
Hills : March to April
Preparation of Land
For transplanting prepare the field to a fine tilth
by ploughing and 3to 4 harrowings followed by leveling.
Source of Seed
Obtain breeder's/foundation seeds from source approved
by a seed certification agency.
375 to 500 gms per hectare.
Sowing of Seeds in Nursery
Seeds may be sown on raised nursery beds.
(15 to 20 cms high from the ground) inrows 2to 3cm apart. 25 nursery
beds of size 2 to 2.5 meters long and 1 to 1.25 metres wide will raise
enough seedlings to transplant one ha.
Apply 20 to 25 tonnes of well-rotted farmyard manure at
the time of land preparation; and 300 kg of Superphosphate, 125 kg
potassium sulphate and 250 kg of amonium sulphate or C.A.N. before
transplating .. Top-dress 250 kg ammonium sulphate or C.A.N. in two
doses. the first fifteen days after transplanting, and the second at
flowering time spread around the plants. Irrigate immediately after
Transplant the seedlings, when 12 to 15 cms in height,
preferably at evening time. Irrigate immediately afterwards.
(a) Non-spreading types: 60 x60 cm between rows and plants.
(b) Spreading type : 75 to 90 x 60 to 70 cm..
Irrigate at two weeks interval during the summer
Keep the fields free from weeds, and the soil well aerated
by frequent hoeings.
Insect and Disease Control
Adopt recommended IPM methods
Remove the offtypes.
Harvesting and Extration of Seeds
Harvesting is done when fruits are fully ripe. the fruits are picked and
collected. The outer covering is peeled off and the flesh with the seeds
is cut into thin slices. These are then softened by soaking till the
seeds are separated from the pulp. If the material is allowed in this
condition tostand overnight, the separation of seeds from the pulp
After separation, the seeds are dipped into water. those
which float should be rejected. the seeds should then be dried in
partial shade to a moisture content ofeight percent below, before storing.
The average seed yield is about 100 to 200 kg per hectare.
Hybrid Seed Production
In producing the hybrid seed, thevariety setting
the large number of seeds in a single fruit should be takne as the
female parent, so that a large amount of seed could be obtained in a
The flower buds which are expected to open the next day are selected on
the female parent. With the help of forceps the flower buds are opened
and the stamens, the number ofwhich varies from five to seven, are
removed one by one. Thisprocess of removing the stamens is called
"emasculation". The emasculated buds are then bagged in butter paper or
muslin cloth bags to prevent pollination with the undesirable pollens.
While emasculating the flower, care should be exercised that no anther
is reptured or crushed. If it happens, such flowers should be
rejectedand the forcep should be sterilised with spirit or alcohol.
The flower buds of the male parent should also be bagged to avoid
contamination. Next day in the morning, the flowers which were bagged
for taking the pollen grains are plucked and collected in a petridish.
The female budsare then uncovered. Theanther from the male flower
isremoved and is held in between the arms of the forceps. As the pollen
grains in the anthers of brinjal are released through apical pores, the
anther is held perpendicular to the stigma surface, keeping the apical
pores of the anther opposite to the stigma surface. the forceps are
tapped and the yellow coloured powder of pollen mass is dusted on the
stigma. This process of dusting the pollen grains on the stigma is known
as 'Pollination'. the pollinated buds are again bagged to prevent
The emasculation and pollination can be done simultaneously. However,
thesuccess in fruit setting when this method is followed is marginally
reduced, but the labour and time required, for bagging the emasculated
buds and unbagging them the next day for pollination is effectively
saved. The emasculated and unpollinated buds and male buds are tagged
with tags of different colours so that each set of buds can be
distinguished with the help of the colour of the tags.
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