a ), ▁leaf - cut ting ▁an ts , ▁term ites , ▁sp ittle bug s ▁( es pecially ▁Mah an ar va ▁f imb ri ol ata ▁and ▁De ois ▁flav op ict a ), ▁and ▁the ▁be et le ▁Mig d ol us ▁f ry anus . ▁The ▁plan th o pper ▁insect ▁E um et op ina ▁flav ipes ▁acts ▁as ▁a ▁virus ▁vector , ▁which ▁causes ▁the ▁sugar c ane ▁disease ▁ram u ▁st unt . ▁ ▁Path og ens ▁ ▁N umer ous ▁path og ens ▁inf ect ▁sugar c ane , ▁such ▁as ▁sugar c ane ▁grass y ▁shoot ▁disease ▁caused ▁by ▁Ph y top las ma , ▁wh ipt ail ▁disease ▁or ▁sugar c ane ▁sm ut , ▁pok k ah ▁bo eng ▁caused ▁by ▁F us arium ▁mon il iform e , ▁X anth omon as ▁ax on op od is ▁b acter ia ▁causes ▁G um ming ▁D ise ase , ▁and ▁red ▁rot ▁disease ▁caused ▁by ▁Col let ot rich um ▁fal cat um . ▁Vir al ▁dise ases ▁affect ing ▁sugar c ane ▁include ▁sugar c ane ▁m osa ic ▁virus , ▁ma ize ▁stre ak ▁virus , ▁and ▁sugar c ane ▁yellow ▁leaf ▁virus . ▁ ▁N it ro gen ▁fix ation ▁Some ▁sugar c ane ▁vari eties ▁are ▁capable ▁of ▁fixing ▁atmos pher ic ▁nit ro gen ▁in ▁association ▁with ▁the ▁b acter ium ▁G lu con ac et ob acter ▁dia z ot roph icus . ▁Un like ▁leg