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Method of Pesticide applicatin by S R Seervi

Pesticide methods

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Method of Pesticide applicatin by S R Seervi

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  1. PESTICIDEAPPLICATIONMETHODS Prepared by S R Seervi Ph.D. Research Scholar Agri. Entomology

  2. The desiredeffect of a pesticidecan be obtained only if it is applied by anappropriatemethodin appropriatetime. The method of applicationdependson natureofpesticide,formulation,peststobemanaged,siteofapplication,availabilityofwateretc. • Dusting : Dusting is carried out in the morning hours and during very light airstream.Itcanbedonemanuallyorby usingdusters.Sometimesdustcanbeapplied in soil for the control of soil insects. Dusting is cheaper and suited for drylandcroppestcontrol. • Spraying: Sprayingis normallycarriedout by mixingEC (or) WP formulationsinwater.Therearethreetypesofspraying.

  3. Granularapplication: Highly toxic pesticides are handled safely in the formofgranules.Granulescanbeapplieddirectlyonthesoilorintheplantparts. • * Themethodsofapplicationare • 2. Broadcasting:Granulesaremixedwithequalquantityofsandandbroadcasteddirectlyonthesoilorinthinfilmofstandingwater.(eg.)Carbofuran3G applied@ 1.45kg/8cent ricenurseryin a thin film of waterandimpoundwaterfor3days. • 3. Infurrowapplication:Granulesareappliedatthetimeofsowinginfurrowsin beds and coveredwith soil beforeirrigation.(eg.) Carbofuran3G applied@3g permeterrowforthecontrolofsorghumshoofly.

  4. Conti…… • Sidedressing:Aftertheestablishmentoftheplants,thegranulesareappliedalittleawayfromtheplant(10-15cm)inafurrow. • Spot application: Granules are applied @ 5 cm away and 5 cm deep on thesidesofplant.Thisreducesthequantityofinsecticiderequired. • Ringapplication:Granulesareappliedinaringformaroundthetrees. • Rootzoneapplication: Granulesareencapsulatedandplacedin therootzoneoftheplant.(eg.)Carbofuraninrice. • Leafwhorlapplication:Granulesareappliedbymixingitwithequalquantityof sandin the centralwhorlof cropslike sorghum,maize,sugarcanetocontrolinternalborers. • Pralinage: The surface of bananasucker intendedfor plantingis trimmed.The sucker is dipped in wet clay slurry and carbofuran 3G is sprinkled (20-40g/sucker)tocontrolburrowingnematode

  5. 4. Seed pelleting/seed dressing : The insecticide mixed with seed before sowing(eg.) sorghum seeds are treated with chlorphyriphos4 ml/kg in 20 ml of waterand shadedried to controlshootfly.Thecarbofuran50 SP is directly used asdryseeddressinginsecticideagainstsorghumshootfly. • 5. Seedling root dip : It is followed to control early stage pests (eg.) in rice tocontrol sucking pests and stem borer in early transplantedcrop, a shallow pitlinedwith polythenesheetis preparedin the field.To this 0.5 kg urea in 2.5literofwaterand100mlchlorpyriphosin2.5literofwaterpreparedseparatelyare poured.Thesolutionis madeup to 50 ml with waterand therootsofseedlingsinbundlesaredippedfor20minbeforetransplanting.

  6. 6.Sett treatment: Treatthe sugarcanesettsin 0.05%malathionfor 15 minutestoprotectthemfromscales.Treatthesugarcanesettsin0.05%Imidacloprid70WS@175g/haor7g/ldippedfor16minutestoprotectthemfromtermites. • 7.Trunk/steminjection : This method is used for the control of coconutpestslike black headed caterpillar,mite etc. Drill a downwardslanting holeof 1.25cm diameterto a depthof 5 cm at a lightofabout1.5 m abovegroundlevelandinject5 mlof monocrotophos36 WSCintothestem andplug the holewithcement(or)claymixedwithafungicide.Pseudosteminjectionofbanana,aninjectinggunorhypodermicsyringeisusedforthecontrolofbananaaphid,vectorofbunchytopdisease.

  7. 8. Padding : Stem borers of mango, silk cotton and cashew can be controlled bythis method. Bark of infested tree (5 x 5 cm) is removed on three sides leavingbottom as a flap. Smallquantityof absorbantcottonis placedin the exposedareaand 5-10mlof Monocrotophos36 WSP is addedusing ink filler.Closetheflapandcoverwithclaymixedwithfungicide. • 9. Swabbing:CoffeewhiteboreriscontrolledbyswabbingthetrunkandbrancheswithHCH(BHC)1percentsuspension. • 10. Root feeding: Trunk injectionin coconutresultsin woundingof trees androot feeding is an alternate and safe chemical method to control black headedcaterpillar, eriophyid mite, red palm weevil. Monocrotophos10 ml and equalquantityofwateraretakeninapolythenebagandcuttheend(slantcutat45)of a growing root tip (dull white root) is placed insidethe insecticidesolutionand the bag is tied with root. The insecticide absorbed by root, enter the plantsystemandcontroltheinsect.

  8. 11. Soil drenching: Chemical is diluted with water and the solution is used todrenchthesoiltocontrolcertainsubterraneanpests.(eg.)BHC50WPismixedwithwater@ 1 kg in 65 litresofwaterand drenchthesoil for thecontrolofcotton/stemweevilandbrinjalashweevilgrubs. • 12. Capsule placement : The systemic poison could be applied in capsules to gettoxiceffectfora long period.(eg.)Inbananato controlbunchytop vector(aphid)theinsecticideis filledin gelatincapsulesandplacedin thecrownregion.

  9. 14. Baiting : The toxicant is mixed with a bait material so as to attract the insectstowardsthetoxicant. • Spodoptera: A baitpreparedwith 0.5 kg molasses,0.5 kg carbaryl50 WPand 5 kg ofricebranwithrequiredwater(3 liters)is madeinto smallpelletsanddroppedin thefieldintheeveninghours. • Rats: Zinc phosphideis mixedat 1:49ratio with food likepoppedriceormaizeor cholam or coconutpieces(or) warfarincan be mixedat 1:19 ratiowithfood.Readytousecakeformulation(Bromadiolone)isalsoavailable. • Coconutrhinocerosbeetle:Castorrottencake5kgismixedwithinsecticide.

  10. Fumigation : Fumigants are available in solid and liquid forms. They can beappliedinthefollowingway. • Soil : To controlthe nematodein soil, the liquidfumigantsare injectedbyusinginjectinggun. • Storage: Liquid fumigantslike Ethylene dibromide (EDB), Methyl bromide (MB),carbontetrachlorideetc.andsolidfumigantlikeAluminiumphosphidearerecommendedingodownstocontrolstoredproductpest. • Trunk:Aluminiumphosphide7ftoItabletisinsertedintotheaffectedportionofcoconuttreeandpluggedwithcementormudforthecontrolofredpalmweevil

  11. Thankyou

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