Vol. 16â1962 - NorthEastern Weed Science Society
Vol. 16â1962 - NorthEastern Weed Science Society Vol. 16â1962 - NorthEastern Weed Science Society
~______ , 53S Table 1: Control of crabgrass by chemicals applied before emergencfl. 1 '1 j. j' Chemica-I Zytron Zytron Dacthal (liq.) (gran,.) (W-50) Dact.ha.L (gran) Calcium propyl arsonate (No-Crab) Diphenat~ile (Lilly) Trifluralin (Lilly J! ..' Dipropalin (Lilly) Pax (36.5% metallic arsenic) Dipheny1ace~onitri1e (Agrico) Chip-Cal (50~ Tricalcium ar-senabe) . ' Rate Ib/A*'. 8 :1.6; 5 1. 15 .20 40 60 20 3') 40 .;:)'}1 r' ": Cr~bgr.a~s C~ntro1 Rating·*' July 21 Augugtr c'23 4 ··4" ,.4. 4: 4- , 4-' 3 4 '4 4 '4 r J 4 4: 68 4' 4 10*' 20*' 30*' 25 50 75 ,10*' 15* 20*', o 1 4 O' 1 3 i~ 4' 4 4 1 1 J Turf InjuloY None II II " " " " " " II " Slight' Heavy Heavy None , " II J.. __ " " 1 I 1 .:P "ro "fI fI " Slight Rates a~e 'pounds 'of activ~ material per i~e - except Pax and Chip-Cal ,~1hi'ch are pOunds'of pro duct per~,J.OOO sq. ft. ** 4. 100% 00 ntrol; 3 = over 90?~; 2 = 60-90;::; 1: = 25-60% o = less than 25% control.,,! rt. I.:'}
Post-emergence application~. Data from several experimsnt.s carried out during thesUl11lner of 1960 'are summarized in Table 2. . . Table 2: Effects of various 1?ost-emergence treatments en crabgrass and turf (1960 data}'t Pot. Chemical Treatment Date of ** Application Cyanate P0t. Cyanate (repeated sprays) FVl 734 (Rohm and Haas ) Zytron Disodium Hethyl Arsonate AmmoniumLethyl Arsonate * ** *** ~ ~~~ ~:i : 3 oz/3 gal '" 1 oz!3 gal * 2 oZ/3 gal * 2 Ib!IOO gallA 4 Ib/lOO gallA 8 Ib/IOO gal/A 10 Ib!lOO gallA 20 Ib/lOO gallA 30 Ib/IOO gal/A 6 lb/IOO gallA 4 Ib/200 gallA 1 1 1 2,4,5 2,4,5 1,4,5 1 1 4,5 4 2 2,4 2,3,5 Corrt.r-e L 0-4 *** 2 2 :3 4 4 o 1 1 1 :3 4 3 2 Turf Injury None SLBurn Burned 539' 31.Durn I Sl.Jurn None Sl.:3urn Burned Sl.Burn Burned Sev.Burn None Slight Applied to 400 sq.ft. only, all rates in terms of active material. 1 = June 6; 2 = ~une 28; :3 = July 15; 4.= July 25; 5 =Aug.4 a = no control; 4 = 100% control Good control was produced by potassium' cyanate even at the lowest rate tested vrhen tr.eatments were repeated 3 times. T"TOsprays gave fair control but one was not Jsufficient. Temporary turf burning occurred in all plots. Similar results were obtained with the arsonates but they were consideraoly slower in action and not as effe cti ve as cyanate. It "TaSnot.ed that the effectiveness of ammonium meth¥l arsonate vras increa sed when applied during a hot day (85°F) Zytron '.Jurned crabgras$, bent grass and fescue at all rates and killed them completely in the plots'sprayed ~lith 30 Ib/A. HO"Tever, the blue-grasses in these plots were strongly stimulated by the treatment, so that a healthy, dark-green, pure blue-grasq ~ stand of grass was produced. The greater injury to turf from zytron in the post-emergence plots as compar-ed to the pr-e-emer-gence may have been nar-t.Lv t,h" """,,"1+ '"f' h';"'h~~ +~,~~~~~ .. ,,-~ _ ...... 1.._ .... ---
- Page 488 and 489: 4es 1'.o~~1ty, ", .ewf!r''''rsenc.
- Page 490 and 491: } ) Table 1. Besu):ta.Qf 1961 pre-e
- Page 492 and 493: 492 corresponding plots on este.bl1
- Page 494 and 495: 494 ae.u!s,'I!IIDi,cua.:Lon leUllll
- Page 496 and 497: 496 D±!3pa,~n~ Resul te)I? .,l-ta,
- Page 498 and 499: 498 1 . 1 J. E. Gallagher and n. J.
- Page 500 and 501: 500 Da1;ejJ01 e~uations ~,a.;t'ollC
- Page 502 and 503: 502 TADLEIt Comparison of "severalc
- Page 504 and 505: 504 TADLE3: Pre-oemergence and poet
- Page 506 and 507: 506 Table 1. Re8eeding Resulte:afit
- Page 508 and 509: 5"8 d1propalin ortrifluralin 'at ':
- Page 510 and 511: 510 aUlIPIl iri '-1: ' D" "" Diphen
- Page 512 and 513: Fall ve. spriif ~nts .. 'Ibe",obl1.
- Page 514 and 515: 514 ~ Tab1e2. Cr&bgraS$'Contr01 in
- Page 516 and 517: 516 ,';1:".i'"'f'!r": :~,j i: .. r
- Page 518 and 519: . ~lS residual cemtrol of crabgrssi
- Page 520 and 521: 520 - . \.. ; ."," ,
- Page 522 and 523: 5~2 'rab4t13.· ~gtnc. ·QGabtiol:o
- Page 524 and 525: 524 PRE.._RGENCE AMU' POsT-EHERGENC
- Page 526 and 527: 526 Table 1. 'l'a):lsra,. ContrO.k1
- Page 528 and 529: 528 Pre- andpost ..emergejljCec:rab
- Page 530 and 531: 530 Prior to each chemical applicat
- Page 532 and 533: u 532 3) Those trea.t,mellts which
- Page 534 and 535: Table I (Coot'd) 27. JSc.F,~iOe t$~
- Page 536 and 537: 536 EXPERIMENTS ONTHECHOOCALCOIm'l)
- Page 540 and 541: 54' In a similar po st-ell1~rgence
- Page 542: 542 da~hal and diphenatrile) at ear
- Page 545 and 546: .. ";' -:' il; JT!.: .'\ i~'J" ; ~J
- Page 547 and 548: 541 Distr:tbution of radioacti~tl t
- Page 549 and 550: 549 •RESULTS The distribution of
- Page 551 and 552: GRAPHII: Comparison of the~.tl;'i~u
- Page 553: "-...-.. J.4 The distribution of r~
Post-emergence application~. Data from several experimsnt.s<br />
carried out during thesUl11lner of 1960 'are summarized in<br />
Table 2. . .<br />
Table 2: Effects of various 1?ost-emergence treatments en<br />
crabgrass and turf (1960 data}'t<br />
Pot.<br />
Chemical Treatment Date of **<br />
Application<br />
Cyanate<br />
P0t. Cyanate<br />
(repeated sprays)<br />
FVl 734<br />
(Rohm and Haas )<br />
Zytron<br />
Disodium Hethyl<br />
Arsonate<br />
AmmoniumLethyl<br />
Arsonate<br />
*<br />
**<br />
***<br />
~ ~~~ ~:i :<br />
3 oz/3 gal '"<br />
1 oz!3 gal *<br />
2 oZ/3 gal *<br />
2 Ib!IOO gallA<br />
4 Ib/lOO gallA<br />
8 Ib/IOO gal/A<br />
10 Ib!lOO gallA<br />
20 Ib/lOO gallA<br />
30 Ib/IOO gal/A<br />
6 lb/IOO gallA<br />
4 Ib/200 gallA<br />
1<br />
1<br />
1<br />
2,4,5<br />
2,4,5<br />
1,4,5<br />
1<br />
1<br />
4,5<br />
4 2<br />
2,4<br />
2,3,5<br />
Corrt.r-e L<br />
0-4 ***<br />
2<br />
2<br />
:3<br />
4<br />
4<br />
o<br />
1<br />
1<br />
1<br />
:3<br />
4<br />
3<br />
2<br />
Turf<br />
Injury<br />
None<br />
SLBurn<br />
Burned<br />
539'<br />
31.Durn I<br />
Sl.Jurn<br />
None<br />
Sl.:3urn<br />
Burned<br />
Sl.Burn<br />
Burned<br />
Sev.Burn<br />
None<br />
Slight<br />
Applied to 400 sq.ft. only, all rates in terms of active<br />
material.<br />
1 = June 6; 2 = ~une 28; :3 = July 15; 4.= July 25; 5 =Aug.4<br />
a = no control; 4 = 100% control<br />
Good control was produced by potassium' cyanate even at<br />
the lowest rate tested vrhen tr.eatments were repeated 3 times.<br />
T"TOsprays gave fair control but one was not Jsufficient. Temporary<br />
turf burning occurred in all plots. Similar results were<br />
obtained with the arsonates but they were consideraoly slower in<br />
action and not as effe cti ve as cyanate. It "TaSnot.ed that the<br />
effectiveness of ammonium meth¥l arsonate vras increa sed when<br />
applied during a hot day (85°F)<br />
Zytron '.Jurned crabgras$, bent grass and fescue at all<br />
rates and killed them completely in the plots'sprayed ~lith 30 Ib/A.<br />
HO"Tever, the blue-grasses in these plots were strongly stimulated<br />
by the treatment, so that a healthy, dark-green, pure blue-grasq<br />
~ stand of grass was produced. The greater injury to turf from<br />
zytron in the post-emergence plots as compar-ed to the pr-e-emer-gence<br />
may have been nar-t.Lv t,h" """,,"1+ '"f' h';"'h~~ +~,~~~~~ .. ,,-~ _ ...... 1.._ .... ---
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