08.06.2015 Views

Vol. 16—1962 - NorthEastern Weed Science Society

Vol. 16—1962 - NorthEastern Weed Science Society

Vol. 16—1962 - NorthEastern Weed Science Society

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

420<br />

S;!.nce t~es treated w:Lthfilnuron d:J,es~or may recover from<br />

what a.ppearto ~,~ot1Qeable eff~tJ,1t is import., to recognize the vaa';f,ous<br />

symptoms and to be !Il!le to pred;l.1;'lf,~ether an atf'~~~ tree w:Lll d:J,eor r~over.<br />

, ". :.":{j :):\; . '.:-: 3 ._ ". . ,:<br />

, 'The.cle~t case is ~t"C!f the healthy.: ~ maple leaf duri~<br />

the height oftheyre~feed:J,ng,~ }ligh, photOsyn~~8,,,jleason. L1ghter-~d<br />

spots first appear in the tissue; Qt'"the leaves b~~'J:he veins. These ~<br />

be detected by' lookins through the leaf toward the sUn. The colors of these<br />

spetliJ chanae ,b~d on the l1gb.t,.:pectrum scale, Fen-yellow-orange-redbrown,<br />

untilthey'seem to be delIA.Jq&terial. ;tn ~J~antime, ,the edges ot j<br />

the<br />

leave8~eatld. ~;,~ the l1v~n~.~.af is reduqe

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!