I TURFGRASS DISEASE RESEARCH REPORT 9 J. M. Vrgs, Jr. n R. Dtwilr Dprtmnt f Btny n Plnt Pthlgy Mihign Stt Univrsity. Snw Ml Th 9 snw ml fungii vlutin trils wr nut t th Byn Highln Rsrt, Hrr Springs, Mihign n "Pnnrss" rping ntgrss mw t /2 inh. N fungiis wr ppli t th tst r uring th grwing ssn. Th wttl pwr (WP) n flwls (F) wr ppli with CO 2 smll plt spryr n th grnulr fungii with 3 ft Stts sprr. Th tst ws ivi int tw stuis us f th lrg siz. Th plts wr 6 ft. x 6 ft. n th trtmnts wr rplit 3 tims in rnm lk sign fr h stuy. Stuy A Th rsul ts f Stuy A n sn in Tl. Thy shw tht prti ll y ll th snw ml prsnt ws Typhul light with nly littl Fusrium pth s init. In itin t th l stnys, Cl grn n Cl lrj Stts F + F II Dw 28, MF 82, Trrlr n Ati-in RZ ll rnk high. With th xptin f Cl grn, l0 lr, n Dw 28, ~ll ths mtrils ntin PCNB (MF 82 n Ati-in RZ) r wr pnb (Trrlr n Stts F + F II with th F + f II ls ntining frtilizr). On n pprn sis, th Stts F + F II ws th st, minly u t th fft f th frtilizr n grss lr n grwth. This is th sn ssn in whih g rsults hv n tin with th PCNB fungiis ginst Typhul light. Stuy B Stuy B h th Typhul light n Fusrium pth prsnt. Thy r list tgthr n Tl 2 s % snw ml n rkn wn in Tl 2 t % Typhul light n Tl 2 t % Fusrium pth. Th rsults in Tl 2, 2, 2, shw tht whrs Fusrium pth ws prsnt in this stuy, th prminnt snw ml ws Typhul light. Clry's 4222 n 4223; Dnil 28 t th /4 pt., /2 pt., n pt. ln n in mintin with Exhlt 0 r Trsn SP 6 z; Trsn SP 9 z.; Stts Fungi f II t th 2 X rt; ll gv signi f int nt r I mpr t th unt rt hk, Tl 2. Whn th rsults r ftr ut in tls 2 n 2, it n sn tht th mjrity f th snw ml prsnt in th Dnil 28 n Clry's 4222 n 4223 plts ws u t Fusrium pth, whrs th mjrity f th snw ml prsnt in th Trsn SP n Stts Fungii II plts t th high rt ws u t Typhul light. Th untrt ntrl h 43% Typhul light n % Fusrium pth.
Tl. Prnt Typhul light n Pnnrss rping ntgrss, xpt whr thrwis init, t th Byn Highln Rsrt, Hrr Springs, MI Chmil & Rt/l0DO s9 ft Cl-grn Stts F+F II Cl-lr Dw 28 MF 82 Trrlr MF 82 Ati-in RZ Trrlr MF 94 MF 94 MF 82 Dw 342 Dw 263 MF 94 Mi I rqrrit IBDU El 222 Chk Ur 8 s x 4 z 9 z 2 z 4 z s s 6 z s 2 s 2 s 2 s I 2 2 4 3 8 Prnt II 3 2 0 0 60 0 inft III. 2 40 60 9 r - rprsnts th fllwing % Fusrium Pth inlu in th numr: AV 2, 6 2 3 2 2 2 40 4 48 3 3 83 92 MF 82 - ~~; Dw 263 - %; Dw 28 - n 2% rsptivly; Cl Clr ~~; MF 94 - %. - Trtmnts fllw y th sm lvl r nt signifintly iffrnt t th ~~ v. 8
Tl 2. Prnt Typhul light n Fusrium light n Pnnrss rping ntgrss t th Byn Highlns Rsrt, Hrr spring, HI Chmil n Rt/lOOO sq. ft. Prnt Inft r I II III AVE Clry's 4222 8 s 2 2 2 Clry's 4223 8 s 2 2 3 Dnil 28 /2 pt Exhlt. 2 6 4 Dnil 28 pt + Exhlt. 2 Dnil 28 /2 pt Trsn sp. 6 z 8 2 Dnil 28 /2 pt 9 Dni 28 /4 pt + Trsn sp. 6 z 2 Dnil 28 pt + Trsn sp. 6 z 3 4 Dnil 28 pt Trsn SP 9 z 2 Dnil 28 /4 pt 22 Stts Fungii II 2 x 8 23 Dnil 28 /4 pt & Exht. 40 40 29 Clry's 422 8 s 60 40 43 Trsn SP 6 z 40 60 43 I Stts Fungii II x 60 40 43 Chk 60 Exhlt. 9 32 2 - Trtmnts fllw y th sm lttr nt signifintly iffrnt t th ~h lvl 9
Tl 2. Prnt inftin f stuy B u t Typhul light. Chmil n Rt/IOOO sq. ft. Prnt inft r I II III AVE Dnil 28 pt. 0 0 0 0 Dni 28 /4 pt+exh t z 0 0 0 0 Dni 28 /2 pt+exhlt z 0 0 0 0 Dnil 28 pt+exhlt 0 0 0 0 " Dni 28 /4 pt+trsn 0 0 0 0 SP 6 z. Dni 28 pt+trsn SP 0 0 0 0 6 z. Dnil 28 /2 pt 0 0 2 Clrys 4222 8 s 2 2 2 Dnil 28 /2 pt+trsn 0 3 SP 6 z. Clrys 4223 8 s 2 2 3 Dnil 28 /4 pt 0 2 Tr sn SP 9 z 9 Stts Fungi i II 2X Trsn SP 6 z 23 Clrys 422 8 t s 60 32 Stts Fungii II IX 60 40 40 Chk 0 43 Exhlt 9 60 62 - Trtmnts fllw y th sm lttr nt signifintly iffrnt t th SO~ v.
Tl s, Prnt inftin f stuy B u t Fusrium Pth. Chmil n Rt/l000 ft. Prnt inft r s9 I II III AV Clrys 4222 8 s 0 0 0 0 Clrys 4223 8 s 0 0 0 0 Trsn SP 9 z 0 2 Stts Fungii II 2X 0 0 2 Stts Fungii II lx 0 0 3 Dnil 28 /2 pt+trsn 4 SP 6 z. Dni 28 /2 pt+exh t z 2 6 4 Dni 28 pt+exht z 2 Dni 28 /2 pt Dni 28 /4 pt 0 Exhlt 6 2 Crys 422 8 s 0 2 Dni 28 /4 pt+trsn SP 2 6 z. Dnil 28 pt+tr. SP 6 z 3 4 Dni 28 pt Chk 0 Trsn SP 6 z Dnil 28 /4 pt+exhlt 40 40 29 - Trtmnts fllw y th sm lttr nt signifintly iffrnt frm h thr t th % v