Transcript Package for improving cotton production in the

Package for improving
cotton production in the
state
Dr P. L. Nehra
Professor( Agronomy)
Agricultural Research Station
Sriganganagar
Varieties
Recommended varieties will be grown as usual but
it was felt that RG-8, Raj DH-9 (Desi hybrid), RS810 and RS-875 should cover large area, so as to
avoid incidence of CLCV. The variety RST-9 may
be grown, where incidence of CLCV was less.
Further more Bt hybrids namely: MRCH-6025 Bt,
MRCH-6304 Bt, RCH-134 Bt, RCH-314 Bt,
JKCH-1947 Bt and NCEH-6 Bt have also been
reported better performance in the State (based on
interim package), therefore committee members
felt that these hybrids may be given chance to
grow in the State.
Crop Diversification
Looking to the cotton crop condition
for the last few years, the committee
members also felt that at list 30-40%
of the area should cover the less
water requiring crops like Guar,
Bajra (hybrid), Moong (SML-668),
Moth and Til etc. Whereas the rest
60-70% for cotton.
Crop Production
Deep ploughing should be done for cotton cultivation.
The sowing should be completed by 20th May and for this,
the State Government should insure Canal water supply during
the sowing period.
The following seed rate and spacing should be used for
different varieties and hybrids.
S. No.
Varieties /hybrids
Seed rate kg/ha.
Spacing (cm)
1
RS-810 and RG-8
14-16
67.5 X 30
2
RS-875
20
67.5 X 20
3
Raj DH-9
4
67.5 X 60
4
Bt hybrids
1.8
108 X 60
Well decomposed FYM @ 8 and 10 t/ha. should be used and
incorporated in the soil at least 20-25 days earlier in Gang Canal
and IGNP area, respectively. Before the sowing of cotton with full
P2O5 as basal and 50% recommended dose of nitrogen in two
equal splits i. e. 25% at the time of sowing and remaining 25% at
first irrigation, so as to encourage the 50% use of organic manure
and 50% use of inorganic manure. The fertilizer dose kg/ha. should
be used for different varieties and Bt hybrids as follows.
Varieties /Bt
hybrids
Bt hybrids
N
P2O5
K2O
150
40
20
Varieties
80
40
20
•Drip irrigation to cotton (LHH 144) at 1.0 ETc increased
24.2 per cent seed cotton yield, improved the quality of
cotton lint and decreased the incidence of whitefly and
spotted bollworm in comparison to recommended flood
irrigation
•Fertigation to cotton (LHH 144) with recommended dose
of N and K in six splits increased 49.8 per cent seed
cotton yield, improved quality of cotton lint and
decreased incidence of whitefly and spotted bollworm in
comparison to recommended flood irrigation
•Paired planting (60x60x120cm) was found superior
over normal planting (60x90 cm)
•Drip irrigation saved 35 per cent irrigation water and
the cost of the system may be met out within two
seasons
Excessive irrigation should be avoided. In case of RST-9
first irrigation may be prolonged upto 50 days.
I.
For the effective control of weeds in the
cotton Pendimethalin @ 1.0 kg a.i./ha or
Trifluralin @ 1.5 kg a.i./ha should be applied as
pre planting and followed by one hand weeding
at 35 DAS.
To check the shedding of fruiting bodies
NAA @ 10 ppm may be used.
To check the unwanted vegetative growth of
cotton Lihocin (cycocel) @ 50 ppm may be
used at 90 DAS or depending upon the nature
of the variety used.
Crop protection
In managing insect and pest it was decided that 50% use of
bioagents (viz. NSKE -5%, Trichoderma etc. and 50% use of
insecticide/ pesticide) should be popularized among farmers.
Monitoring and mass trapping of adults of pink, spotted and
American bollworms through sex pheromone traps proved
effective in controlling the population level of the pests in the
cotton field. So installation of pheromone traps at the time of
square initiation is recommended.
Timely availability of pheromone traps should be ensured to the
cultivator.
Earias insulana and Earias vitella these two species of spotted
bollworms are prevalent in the area therefore, pheromone traps of
these two species may be insured.
Hand picking of eggs, larva and damage shoots of the plant
should be done at regular interval.
Bioagent (Trichoderma spp. And chrysoperla spp. )should be available to the
farmers at the peak activity of the pest.
NPV applied @ 450 LE/ha. either alone or in combination with Endosulphan or
Chloropyriphos in the evening hours is effective for controlling the early star of
the Heliothis species.
Neem botanics @ 2-5 ml/ liter of water based on ppm may be used for
suppressing the population of insect pest in general and white fly in particular.
For chemical control ETL values given for the key pest may be strictly followed
so as to reduce the pesticidal load.
Use of Monocrotophos, Acephate and synthetic pyrithroids should be
discouraged whereas Chloropyriphos, Endosulphsn, Thiadicarb Trizophos,
Indoxacarb and Spinosad enchouraged. Mixing of insecticides should strictly be
discouraged.
Three rows of bajra + maize+ cowpea should be planted around cotton field to
attract birds for predation and conservation of natural enemies of insect pest.
Root rot intensity may be reduced by application of Zinc sulphate @ 24 kg/ha.
in the soil before sowing and the cotton seed treated with either Emisan (0.1%) or
Bavistin (0.2%). Further more, local isolate Trichoderma used @ 4 g /kg seed
proves effective in keeping the disease spread under check.
The use of susceptible varieties/ hybrids should be treated with
Imidaclorpid to check the incidence of sucking pest at an early
stage.
Cotton seed soaked either with Streptocycline (0.1 g ) or
Plantomycine (10 g) in 10 litre of water and sown early in the crop
season gives better control of bacterial blight.
Sowing of CLCV susceptible varieties should be discouraged in
and around cotton fields.
Cultivation of bhindi be discouraged in and around cotton fields.
The CLCV should be managed by the removal of its alternate
weed hosts like pilibuti, kangibuti etc.
Whitefly be controlled by spraying Dimethoate 30 EC and Methyl
dematone 25 EC @ 1.0 litre/ha at low population and Trizophos @
1.5 litre/ha and Ethion 2.0 litre/ha at high population of whitefly.