कीटनाशक  हिन्दी देवनागरी में पढ़ें।

kitanashak (angrezi: Insecticides) un rasayanik ya jaivik padarthon ka mishran hota hai, jinaka upayog kide makodon se hone vale dushprabhavon ko kam karane, unhen marane ya unase bachane ke lie kiya jata hai. isaka prayog krishi ke kshetr men ped-paudhon ko bachane ke lie bahutayat se kiya jata hai. kee prakar ke kide adi poori fasal ko barbad kar dete hain. inake niyntran ya phir inhen samapt karane ke lie kitanashakon ka prayog kiya jata hai.

kary

kitanashak tin prakar se kary karate hain-

  1. jivadravy[1] par vishavat kriya karake, jaise- aml aur kshar
  2. shvasavarodh karake, jaise- tailadi
  3. tntrikatntr par vishavat kriya karake, jaise- kloropharm

kitanashak padarth vilayan, payas, paudar (choorn), vashp ya dhuen ke roop men prayukt kie jate hain athava bhojan men mishrit karake. sushrut ke anusar guggul, dhoop aur agar ka dhuna kitanashak hai. jalate gndhak ka dhuan bhi kit tatha krimi ko nasht kar deta hai. gndhak choorn ke roop men athava mitti ke tel men payas banakar upayukt kiya jata hai.[2]

haidrosayanik aml

jiv matr ke lie atynt vishaili gais hai aur har jiv-jntu, kide-makode, jaise- makkhi, khatamal, jhingur, tilachatta, kanakhajoora adi krimiyon tatha choohon ko, jin par gndhak ka koee prabhav nahin padata, shighr hi nasht kar deta hai.

karban daisalphaid

yah bada shaktishali kitanashak hai. turnt sab krimiyon ko nasht kar deta hai.

paitroliyam athava khanij tail

yah mitti ke tel ke roop men pray: kam men laya jata hai. petroliyam se utpann gaisolin, krood aauyal adi bhi upayogi kitanashak hain. petroliyam ko machchhar aur unake ande bachchon ka nash karane ke lie adhikatar kam men late hain. ek auns petroliyam pndrah varg phut jal ki satah ke liye paryapt hota hai. petroliyam ke chhidakav se khatamal, makkhi aur pissoo nasht ho jate hain. koyale ka tel (kol aauyal) favvare ke roop men joon ka vinashak hai.

snkhiya (arsenik)

yah bahutayat se peris grin ke roop men machchhar ke vinash ke lie pani ki satah par chhidaka jata hai. sodiyam arsinait ka vilayan kilani aur makkhiyon ko marane men upayogi hai. paeethrom ka choorn bhi achchha kitanashak hai aur bahutayat se prayukt kiya jata hai. yah dhatu, kapade aur rng ko kharab nahin karata. inake vilayan ka phuhar machchhad ka nash karane men upayogi siddh hua hai.

di. di. ti.athava daikophen

yah shvet rng ke choorn ya chhote-chhote dane ke roop men hota hai. isamen koee vishesh gndh nahin hoti. yah jal men nahin ghulata, kintu benzin aur karban tetrakloraid men turnt ghul jata hai. ek bhag di. di. ti. pachas bhag ailakohal men aur das bhag mitti ke tel athava aur kisi tel men ghul jata hai. aj tak jitane bhi kitanashakon ka avishkar hua hai, unamen di. di. ti. sabase adhik prabhavashali aur upayogi siddh hua hai. yah machchhar-makkhi, tilachatta, khatamal, pissoo, aur unake andon ko nasht karane ke liye tel ya jal men vilayan ya payas banakar, athava sookha hi, sab prakar ke kidon ka nash karane ke lie upayog men laya jata hai. panch pratishat di. di. ti mitti ke tel men ghulakar prayukt kiya jata hai. isaki sabase badi visheshata yah hai ki isaka prabhav kee saptah tak bana rahata hai. joon marane ke liye do pratishat di. di. ti. paryapt hai. yadi is ek bar sir men laga diya jae aur kuchh samay tak bal n dhoe jae to joon aur unake ande bachche samool nasht ho jate hain.[2]

gaimeksin

yah bhi tivratam kitanashak hai. yah shvet manibhiy choorn hota hai. isaka adha pratishat jal athava mitti ke tel men ghulakar bahutayat se sab prakar ke kide makodon ko nasht karane ke lie prayukt hota hai. yah machchhar, nali, kooda, karakat, pans, knpost adi ke kidon ko marane ke kam men ajakal pray: ata hai.


panne ki pragati avastha
adhar
prarambhik
madhyamik
poornata
shodh

tika tippani aur sndarbh

  1. Protoplasm
  2. 2.0 2.1 kitanashak (hindi) bharatakhoj. abhigaman tithi: 15 joon, 2014.

snbndhit lekh

varnamala kramanusar lekh khoj

a   a    i    ee    u    oo    e    ai    o   au    an    k   kh    g    gh    n    ch    chh    j    jh    n    t    th    d   dh    n    t    th    d    dh    n    p    ph    b    bh    m    y    r    l    v    sh    sh    s    h    ksh    tr    gy    ri    ri    aau    shr   aah