
vaarshik rigrass vishaaktata

vaarshik rigrass vishaaktata (aar. jee. tii.) jeevaanu sankramit vaarshik raigras ("lolium regidam") mein nihit vishaakt padaarth seey pashudhan kaa vishaaktata haye. vishaakt padaarth "rathibacter toxicus" (poorv mein "clavibactor toxicus") jeevaanu dwara utpaadit hotaa haye, jise sootrakrimi "anguina funesta" dwara rigrass mein leey jaaya jaataa haye.
itihas.
argot koo pahali baar 1950 key dashak mein dakshin australia key kaale jharanon key aspas aur phir 1960 key dashak mein paschimi australia key govangerup key paas darj kiya gayaa thaa. yeh bimari teji seey fail gaee haye aur paschimi australia mein lagbhag 40,000 seey 60,000 varg kilometres krishi bhoomi haye, aur dakshin australia mein isi tarah key kshetra abb argot paida karane vaale jeevon seey prabhaavit hain. adhikansh aar. jee. tii. seey sambandhit pashudhan kaa nuksan octuber seey janwari key dauran hotaa haye, lekin aprail key anta taka nuksan darj kiya gayaa haye.
lakshan.
aar. jee. tii. ack tantrika sambandhi sthiti haye aur mastishk koo prabhaavit karati haye. bheden shuru mein poori tarah seey samanya lugg sakati hain, lekin aggar sou meater yaa usase adhik kii doori taka chalaai jaati hain, tou thodaa tanaav halke prabhaavit jaanvaron koo baaki jhund seey peechhe chhod dega aur ack oonchi chaal kaa pradarshan karega. adhik gambhir roop seey prabhaavit janwar samanvaya khou sakate hain aur thokar khaa sakate hain, lekin aamtaur parr thheek hoe jaate hain aur baaki jhund mein shamil hoe jaate hain yadi unhein chupchaap akela chhod diyaa jaataa haye. sabse adhik prabhaavit bheden baar-baar girengi aur uthh naheen sakengi. inn bhedon key marane kii sambhavana hoti haye, kabhi-kabhi pahale lakshan dikhaai dene key kuchh ghanton key bheetar mrityu hoe jaati haye.
roktham.
rigrass kii aabaadi koo cumm karane key uddeshya seey jadee-bootiyon key anuprayog argot key jokhim koo cumm karane mein safal rahey hain, lekin charagah utpaadaktaa mein teji seey kamee aur rigrass jadee-bootiyon key pratirodh mein vriddhi jaise avaanchhaniya prabhaav hain.
haal hii mein jaari javic niyantran agent, twist fungus, rigrass koo niyantrit karane kii aavashyakta key binaa jokhim argot koo cumm karane mein prabhaavi saabit huaa haye. twist fungus inoculum kaa pahala upayog 1997 mein kiya gayaa thaa.

