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COTTON
(Gossypium sp.)
Cotton
is grown from sea level to moderate elevations not exceeding
1000 m where the climate is tropical with rainfall 500
to 750 mm. Excessive rain at any stage is harmful to
the crop. It can be grown in a wide variety of soils.
A deep homogeneous fertile soil is desirable.
Seasons
Winter crop: August-September
Summer crop: February-March
Varieties
Cotton
varieties, spacing and duration
|
Variety
|
Spacing,
cm
|
Duration,
days
|
Season
|
|
MCU
5 / MCU 5 VT
|
75
x 45
|
175
|
Irrigated
crop (Aug - Sep)
|
|
TCHB
213 (hybrid)
|
120
x 60
|
190
|
Irrigated
crop (Aug - Sep)
|
|
Savita
(hybrid)
|
90
x 60
|
165
|
Irrigated
crop (Aug - Sep)
|
|
LRA
5166
|
60
x 30
|
150
|
Rain fed crop (Aug - Sep)
|
Preparation
of land and sowing
Plough the land three to four times and form ridges
and furrows. Dibble the seeds on the sides of the
furrows. Use basalin at the rate of 2.5 l/ha before
irrigating the field to control the weeds.
Note:
Treat the seeds with carbendazim 50 WP (2 g/kg) or
Trichoderma viride talc preparation (4 g/kg) before
sowing.
Seed
rate for cotton
|
|
Variety
|
Delinted
seeds
|
Fuzzy
seeds
|
|
Irrigated
|
MCU
5 / MCU 5 VT
|
5.0
kg
|
8.0
kg
|
|
TCHB
213
|
2.5
kg
|
---
|
|
Savita
|
3
- 4 kg
|
---
|
|
Rain
fed
|
LRA
5166
|
8
- 10 kg
|
10
-12 kg
|
Top...
In
the case of irrigated crop, irrigate the plants once
in two weeks. Copious irrigation during flowering will
ensure good pod setting and good fibre quality.
Top...
Apply
FYM or compost @ 12.5 t/ha for rainfed crop and 25
t/ha for irrigated crop. Apply N:P2O5:K2O each @ 35
kg/ha as basal dressing. Topdress with 35 kg N per
ha about 45 days after sowing
Thin
the crop when the plants are 15 to 20 cm high retaining
two seedlings per hill. Retain only one seedling per hill
in the case of hybrids. Timely weeding and hoeing will
ensure good crop growth.
Against
sucking pests like jassids, aphids and thrips, spray
methyl-O-demeton (500 ml/ha) or imidacloprid (100 ml/ha)
on 20th day and 40th day. To control whitefly, use neem
oil (3.0 l/ha) or phosalone (2.5-3.0 l/ha).
For
bollworm, spray monocrotophos or quinalphos
or chlorpyrifos (2-3 l/ha), starting from 55th day of
sowing at 15 days interval or more depending on the
pest prevalence.
Top...
For
bacterial blight disease, use streptocycline (50 g/ha
+ copper oxychloride 1.5 kg/ha). For grey mildew, carbendazim
@ 250 g / ha may be used. For Alternaria leaf spot,
use copper oxychloride @ 1.5 kg/ha.
The
bolls burst within 100-120 days after sowing and will
be ready for harvest at this stage.
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