| |
Introduction
|
|
| |
Brinjal
is one of the most commonly grown vegetable crop of
the country. India produces about 7.676 M mt of brinjal
from an area of 0.472 M ha with an average productivity
of 16.3 mt/ha. The brinjal producing states are Orissa,
Bihar, Karnataka, West Bengal, Andhra Pradesh, Maharashtra
and Uttar Pradesh. In West Bengal brinjal is grown in
0.140 M ha area with the production of 2.388 M mt and
productivity of 17.0 mt/ha. The major brinjal producing
belts in West Bengal are Hoogly, 24-Paraganas and Burdwan.
Brinjal has ayurvedic medicinal properties and white
brinjal is good for diabetic patients. It is also a
source of vitamins A, C and minerals. |
| |
 |
|
| |
Crop
varieties |
|
| |
The
Brinjal (Solanum melongena L.) plant belongs to the
family Solanaceae. The commonly cultivated varieties
are Nichindapur barrot, Pant Rituraj, Mukatakeshi, Pusa
Kranti, Arka Sheel, and Arka Navneet (F1). |
|
| |
 |
|
| |
Conventional
practices |
|
| |
Generally
farmers grow local varieties and use check basin method
of irrigation. Standard practices of nutrient application
and plant protection are rarely adopted. |
|
| |
 |
|
| |
Suitable
agro climatic conditions |
|
| |
Brinjal
requires a long warm growing season. Daily mean temperature
in the range of 130 C to 210 C is favourable for its
successful production. Special care is required to protect
the crop from frost. |
|
| |
 |
|
| |
Suitable
soils |
|
| |
A
well-drained fertile soil is desirable for the brinjal
crop. It is a hardy plant and may be grown on different
soils. However, it grows best on soils with silt loam
and clay loam texture. Sandy or sandy loam soil is preferred
for the early crop. |
|
| |
 |
|
| |
Preparation
of land |
|
| |
The
soil is deep ploughed and leveled by planking. FYM is
mixed with the soil at the time of field preparation.
All the weeds should be cleaned. Proper drainage is
essential for development of crop. |
|
| |
 |
|
| |
Soil
sterilization |
|
| |
The
sterilization of the soil can be achieved by both physical
and chemical means. Physical control measures include
treatments with steam and solar energy. Chemical control
methods include treatments with herbicides and fumigants.
Soil sterilization can also be achieved by using transparent
plastic mulch film, which is termed as soil solarization.
During soil solarization, the incoming solar radiation
penetrates the transparent plastic film and is absorbed
in the soil. The absorbed radiation converts into heat
energy, which raises the soil temperature and kills
many soil-borne organisms including plant pathogens
and pests. |
|
| |
 |
|
| |
Planting |
|
| |
Planting
of brinjal is done at the end of April, end of July
and end of September. Brinjal seeds are sown in rows
5 cm apart on 6-12 mm raised nursery beds. The nursery
bed is covered with plastic or straw mulch till seeds
germinate. Poly-house may be utilized to provide favourable
micro climatic conditions to raise nursery. The seedlings
of 4 to 6 weeks old are transplanted in a well-prepared
field of which the surface soil is mixed thoroughly
with FYM and a small quantity of super phosphate. The
planting distance depends on soil fertility, season
and variety. Usually, for the bushy, non-spreading type
variety, the spacing should be 50 to 60 cm from row
to row and from plant to plant. However, for spreading
type varieties, the row-to-row distance should be 75
to 90 cm and plant-to-plant distance of 60-70 cm. |
|
| |
 |
|
| |
Drip
system requirement |
|
| |
Area
: 1 ha, Planting geometry: 75cm x 60cm |
|
| |
Variable
items : 75 mm & PVC/HDPE pipe-54 m, 75 mm
& PVC/HDPE pipe-102 m, 12 mm & LLDPE Lateral-6700
m, Online drippers (2 l/h- 5628 Nos., Control valve -2
Nos., Flush valve -2 Nos. and Tees/bends-1 No. Accessories. |
|
|
| |
Fixed
items : Screen filter (15m3/h)-1 No., Bypass
assembly -1 No., Fertilizer applicator-1 No., Accessories. |
|
| |
 |
|
| |
Irrigation
scheduling |
|
| |
The crop requires
adequate moisture during the initial 70 days of its growing
season. It can withstand drought in the later part of
the growing season. Drip irrigation is ideal for the irrigation
of brinjal crop. The daily water requirement of one plant
is 0.75 liter at the initial growth stage and 3.25 liters
at the peak growth stage. This water requirement of brinjal
can be met by applying irrigation on alternate days or
at 3 days interval with drip. |
|
|
| |
 |
|
| |
Advantages
of drip irrigation |
|
| |
Saves water. |
|
| |
Enhances plant
growth and yield. |
|
| |
Saves energy
and labour. |
|
| |
Most suited
for soils having low water holding capacity on undulating
terrain. |
|
| |
Reduces weed
growth. |
|
| |
Improves fertilizer
application efficiency. |
|
| |
Improves quality
of produce. |
|
| |
Reduces salt
concentration in the root zone. |
|
|
| |
 |
|
| |
Application
of fertilizers |
|
| |
Application
of 25 t/ha FYM along with 60 kg/ha each of P2O5 and K2O
has been recommended. Nitrogen is applied @ 100 kg/ha
in 5 to 6 split doses during the crop growing season through
fertigation. |
|
| |
 |
|
| |
Weed
control |
|
| |
Hand weeding
and hoeing are done to control weeds. Black plastic mulch
is also an effective method to control weeds. Black polythene
mulch prevents entry of light, which restricts germination
of weed seeds and growth. |
|
|
| |
 |
|
| |
Plant
protection |
|
| |
The control
measures of the main pests and diseases of brinjal are
described below – |
|
|
| |
Shoot
and Fruit Borer: This is the most serious pest
of brinjal. In the initial stages it attacks the terminal
shoots and bores inside. Later, it also bores into the
young fruits as soon as fruits start setting. This can
be controlled by spraying of 20 % Lindane. |
|
|
| |
Damping
off: This disease which is caused by soil borne
Phytophthora or Pythium species occurs generally during
the nursery stage. The affected seedlings dry up at the
ground level and topple over. This can be controlled by
sterilization of the nursery bed soil and treating the
seeds with fungicide before sowing. |
|
|
| |
Wilt:
This is caused by fungi and characterized by yellowing
of the foliage. The lower leaves turn yellow and then
brown between the veins. The control measures include
use of resistant varieties, long crop rotations and periodic
spraying of fungicide. |
|
| |
 |
|
| |
Harvesting,
yield and quality control |
|
| |
Brinjal is harvested
when it attains good size and colour. The surface of fruit
should not lose its brightness and glossy colour. A short
piece of the stalk is left attached to the fruit. The
average yield varies from 45 to 50 t/ha. |
|
| |
 |
|
| |
Post
harvest handling and storage |
|
| |
The Indian Standards
Institution has recommended three grades of brinjal. Viz;
Super, Fancy and Commercial. The harvested fruits can
be kept for 7 to 10 days in good condition at 100 to 130
C temperature and 85 to 90 % relative humidity. |
|
| |
 |
|
| |
Cost
economics |
|
| |
Area
: 1 ha, Planting geometry 75cm x 60cm. |
|
|
| |
Fixed cost
of drip system : Rs. 75,263 |
|
| |
Rate of interest
: 10.5% |
|
| |
Life of drip
system : 7.5 years |
|
| |
Annual cost
of drip system : Rs. 10,822 |
|
| |
Cost of cultivation
: Rs. 12,750 |
|
| |
Expected yield
: 47 t/ha |
|
| |
Expected Benefit-Cost
ratio : 3.2 |
|
| |
 |
|
| |
CONTACT
ADDRESS |
|
| |
Dr. K. N. Tiwari
Professor & Principal Investigator
Precision Farming Development Centre
Agricultural & Food Engineering Department
IIT Kharagpur (W.B.) 721 302
Tel: 03222-283150 (O)/ 283151 (R)
Fax: 03222-282244 / 255303 (O)
|
|
| |
Email: kamlesh@agfe.iitkgp.ernet.in,
pfdc_kharagpur@yahoo.com
|
|
| |
 |
|