Devsena is a soil-applied insecticide containing the active ingredient Thiamethoxam. It is labeled for use on crops like groundnut, sugarcane, rice, and cotton to control sucking and chewing pests. Devsena is absorbed quickly by plant roots and provides systemic protection. It has negligible effects on beneficial insects. The document provides information on target crops, key pests for each crop, and recommended dosages of Devsena to control these pests.
2. Qualities Of Devsena
Devsena is broad spectrum systemic insecticide contains the active ingredient
Thiamethoxam. It is soil-applied insecticide and having quick action against sucking
andchewingpests.IthaslabeledforuseonGroundNut,Sugarcane,Rice andCotton.
Devsena may direct the application at the base of the plant for optimum root uptake
whenmakingpost-emergenceapplications.
Devsena improves the plant from primary treatment, it took up by the plant faster
which results higher yield and improved crop quality resulting longer-lasting
systemic control.
For use, measured out the required quantity of the Devsena and mix it well with a
small quantity of water and add remaining quantity of water as specied with
thoroughagitationandapplyassoil drenchinginGroundNut,SugarcaneandCotton.
For Rice measured out the required quantity of the product and dissolve in 500 ml of
watertomakesolutionformixingandbroadcastingwithsandattherateof8kg/acre.
Ithasnegligibleeffectonbenecialinsects.
3. Target Crops
Groundnut
The peanut, also known as the groundnut
and the goober. It is a legume crop grown
mainly for its edible seeds. It is widely
grown in the tropics and subtropics, being
important to both small and large
commercial producers. It is classied as
both a grain legume and, because of its
high oil content, an oil crop. World annual
production of shelled peanuts was 42
million tonnesin2014.
4. Target Crops
Groundnut
Termites are widely distributed in all
groundnut growing areas in India. They
favor red and sandy soils, and are less of a
problem in post-rice groundnut crops and
in clayey soils.Termites live in colonies
and these colonies can extend several
feet underground. Termites are white
translucent ant like insects.They enter the
root system and burrow inside the root
and stem; this usually kills the plant.They
bore holes in the pods and damage the
seed.They remove the soft corky tissue
from between the veins of the pods
(scaried).
Pest : Termites
5. Target Crops
Cotton
Cotton is a soft, uffy staple ber that
grows in a boll, or protective case, around
the seeds of the cotton plants of the genus
Gossypium in the mallow family
Malvaceae. The ber is almost pure
cellulose. Under natural conditions, the
cotton bolls will increase the dispersal of
the seeds. The plant is a shrub native to
tropical and subtropical regions around
the world, including the Americas, Africa,
and India. The greatest diversity of wild
cotton species is found in Mexico,
followed by Australia and Africa. Cotton
was independently domesticated in the
OldandNewWorlds.
6. Target Crops
Cotton
Jassid is a sucking pest occurring
throughout the crop growing period on
cotton in all the zones. The pest injects
toxins into leaves while feeding which
results in abnormal changes in leaves -
marginal chlorosis and reddening. Since
the pest severity is dependent on the
occurrence of congenial weather
conditions, we have devised weather
based rules for weekly prediction of the
pestseverity.
Pest : Jassids
7. Target Crops
Cotton
Aphids are soft-bodied insects that use
their piercing sucking mouthparts to feed
on plant sap. They usually occur in
colonies on the undersides of tender
terminal growth. Heavily-infested leaves
can wilt or turn yellow because of
excessive sap removal. While the plant
may look bad, aphid feeding generally will
not seriously harm healthy, established
treesandshrubs.
Pest : Aphids
8. Target Crops
Rice
Rice is a type of grain. It is eaten as staple
food in many parts of Asia. It is grown in
warm parts of the world, mainly Asia,
Africa, northern Italy, and the west coast
of North America.Rice used to be the main
diet in many countries. Various kinds of
food processing prepare rice for eating. It
is usually cooked. In some areas, such as
Spain, rice is rst fried in olive oil or
butter, then cooked with water or soup. In
other areas, such as India, rice is eaten
with sauce or curry. Rice can also be used
tomakealcohol, suchasJapanesesake.
9. Target Crops
Rice
Green leafhoppers are the most common
leafhoppers in rice elds and are
primarily critical because they spread the
viral disease tungro. Both nymphs and
adults feed by extracting plant sap with
theirneedle-shapedmouthparts.
Pest : Green Leaf Hopper
10. Target Crops
Rice
The brown planthopper (BPH) is an insect
pest of rice. BPH is a small brown insect
found mainly on the base of rice plants
above the water level. Adults and young
suck the plant sap from leaf sheathes,
causing yellowing of lower and then upper
leaves. Whole areas can die in patches
which are said to be affected by “hopper
burn”. It can cause total yield loss when
its attackis severe.
Pest : Brown Leaf Hopper
11. Target Crops
Sugarcane
Sugarcane is widely grown crop in India. it
provides employment to over a million
people directly or indirectly besides
contributing signicantly to the national
exchequer. Sugarcane growing countries
of the world lay between the latitude 36.7
degree north and 31.0 degree south of the
equator extending from tropical to
subtropical zones. Sugarcane Plants
spread along human migration routes to
Asia and the Indian subcontinent. Here it
cross-bred with some wild sugar cane
relatives to produce the commercial
sugarcaneweknowtoday.
12. Target Crops
Sugarcane
Termites attack the planted sugarcane
setts, usually from cut ends or eye buds
but in severe cases internodes as well.
After germination, roots are attacked,
eating all their contents and lling the
galleries with soil, nally leaves dry up
andplantsdie.
Pest : Termites
13. Target Crops
Sugarcane
The caterpillars of the shoot borer cause
dead hearts in young plants. The young
plants with dead hearts formed at shoot
stage can be pulled out easily. The canes
are damaged and also produce a foul odour.
The central whorl of leaves dries up in the
damaged plants.It causes heavy yield
losses as it affects the plant stand/unit area.
It also leads to canes of different age, which
will be poor in juice quality, with less cane
weight. When borer infects cane stalks,
bothyieldandqualityarereduced.
Pest : Early shoot borer
14. Recommendations
Crop Common name of
the pest
Dosage / acre
Formulation
(gm/ml)
Dilution in
Water (Liter)
Waiting Period
(days)
Sugarcane Termites & Early shoot borer 64 200-400 lit 230
Rice
Green Leaf Hopper & Brown
Plant Hopper
60 Dissolve in 200ml Water and
mix With 8 Kg sand/ac
60
Cotton Jassids & Thrips 50 50-100ml/plant 109
Groundnut Termites 50 200-400 lit 57