Vol. 16â1962 - NorthEastern Weed Science Society
Vol. 16â1962 - NorthEastern Weed Science Society Vol. 16â1962 - NorthEastern Weed Science Society
} ) Table 1. Besu):ta.Qf 1961 pre-emergence ~s con~ trtals':Q()rneU ....assau COunty Park Turigrass 1 ~1ication: March 29, 1961 Ii1jury ratings: _ 31, 1961 Control ratings: July 25, 1961 Plots: 7 x 7' Established turf: 3 replications Poor turf: 4 replications Proprietary material Acti ve ingr~ent 1. Chip-~' 'grtmular calcium arsenate ';) . ;~l .(1 2. Halts 3. Pax 4. Bo'-Crab '5· .Agt'1cp~grass "~.roi -, 6. Rid 7. Dow Crabgrass Killer Percentcra'Qgrass in check ch1~ ~i reie.teei~CBIIP01J!fI'f~ '~ 0' .. , d1P~llearsenical calcium propyl dacthaJ. zytron cOJllPOU1lds ar80nate Pounds of Formulation!M 15 ~6/ 20 5 10 10 ~ , 10 20 B 16 Established turf Poor t1l '.J 1 Injury 2 ~ Control Ratings Control 99 100 96 .\. "_. -r-.,~ ..." '.-1 • ; ~< ~ '; o.o .Ell 95 1.0 71 2 0.0 25 2l 0.0 40 0.0 69 87 ~.3 -- 100 0.0 98 100 1·7 96 0.7 99 100 2.0 -- I '90 0 0" -:t l. 2. Percent crabgrass cont'ro1 calculated on the basil3 of' averagenulliber of plants per square foot in ·chec at the time of estimating; average of' 9 l;lamp1es,_3 o~e square foot samples per replicate. TUrf injury ratings: O-none; 1-slight; 2-modera'tej3'-severe; 4-comp1ete }till. 3· Percent control based on estimates of percent crabgrass in checks at time of estimating.
Crabgrass Control and Turf InjUry'·- Established ''l\irf i~. ZiY'tron (Dow Crabgrass Killer) and dacthal (Rid) gave 96%and 100% control) respectively. When double the recommended rate was used, 100%control was obtained with both materials. However, 8'l1ght to moderate turf injury occurred when these rates Were used (zytrolt' caused some thinning of the turf at the normal rate ofappl1cation). 'l\u'(;:1njury, in this case, ' was expressed by the failure of the red fescue and'bentgrass populations to fully recover following the pre-application thinnfUei and mowing treatments. 491 The same materials used in experimental triaJ,.s on establisHed turf were also used in the pre-emer~nce crabgrass cort~ol trials on poor turf. The results were similar to that which occurred on 'established turf, although in some cesea, the reduction in crabgrass populations was not as great. The most notable exel!1Ples of this were ,With chlordane-{Halts) and with the t arsenical-fertilizer formula.tion (Pax). Crabgrass control with chlordane was reduced from 91%in established turf to 61%in the poor turf areas, with a similar decrease (95%to 7l'{o) observed for the e..rselilical-fertilizer fQ1'IIlUlation (Pax). Calcium propyl arsonate (No-Crab) tUid diphenatrile (Agrico crabgrass control) gave n greater crabgrass control, than that found in
- Page 439 and 440: Helisoma, Menetus, fhYSa andValvata
- Page 441 and 442: i s. The benth1c populat1Q~ W¥", O
- Page 443 and 444: 443 Eurasian. wa~lfoil a W8t.f~~ ap
- Page 445 and 446: Empb4sis was on testing DOD-volatil
- Page 447 and 448: 447 . , , -. I':'V'est~a.ti
- Page 449 and 450: FIELDOBSERVATIONS UPONESTUARINE ANI
- Page 451 and 452: more than 2 feet. ExceptionalUdes s
- Page 453 and 454: TABLE1. Responseof oysters t~ diffe
- Page 455 and 456: In the'Dundee Creek series. ,one of
- Page 457 and 458: workers. springer (1961) cite8& num
- Page 459 and 460: OBSERVATIONSONTHE OCCURRENCE' ANDPE
- Page 461 and 462: 461 TABLE! Chemical Water QuaU1?::r
- Page 463 and 464: TABLEIII Threshold Taste and Odor C
- Page 465 and 466: (1.1-) Burttschell, R.H. , et al.,
- Page 467 and 468: Code A - seeded June 29 B - seeded
- Page 469 and 470: SUIIIIJ~, ~ Conclusions 5' 469 The
- Page 472 and 473: III. Average turf scores l' of thre
- Page 474 and 475: 474 PIft'J'OTOXICBlFBQTS'QJe'CBRTAI
- Page 476 and 477: 476 MERIONBLUEGBASS• T!BATANDsgD
- Page 478 and 479: 478 In general. the treatments appl
- Page 480 and 481: 4BJ days follow:lng the ohemical tr
- Page 482 and 483: ') ') ' :_B!.ue~s•. Fescue au:l~"
- Page 484 and 485: :". ',J P~E~ C!',. O~.C~G~S 'F.~HEM
- Page 486 and 487: Lima and ferd'1izer applications sh
- Page 488 and 489: 4es 1'.o~~1ty, ", .ewf!r''''rsenc.
- 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 538 and 539: ~______ , 53S Table 1: Control of c
} )<br />
Table 1. Besu):ta.Qf 1961 pre-emergence ~s con~ trtals':Q()rneU ....assau COunty Park Turigrass 1<br />
~1ication: March 29, 1961 Ii1jury ratings: _ 31, 1961 Control ratings: July 25, 1961<br />
Plots: 7 x 7' Established turf: 3 replications Poor turf: 4 replications<br />
Proprietary material Acti ve ingr~ent<br />
1. Chip-~' 'grtmular calcium arsenate<br />
';) .<br />
;~l .(1<br />
2. Halts<br />
3. Pax<br />
4. Bo'-Crab<br />
'5· .Agt'1cp~grass<br />
"~.roi -,<br />
6. Rid<br />
7. Dow Crabgrass<br />
Killer<br />
Percentcra'Qgrass in check<br />
ch1~ ~i reie.teei~CBIIP01J!fI'f~ '~ 0' .. ,<br />
d1P~llearsenical<br />
calcium<br />
propyl<br />
dacthaJ.<br />
zytron<br />
cOJllPOU1lds<br />
ar80nate<br />
Pounds of<br />
Formulation!M<br />
15<br />
~6/<br />
20<br />
5<br />
10<br />
10<br />
~<br />
, 10<br />
20<br />
B<br />
16<br />
Established turf Poor t1l<br />
'.J 1 Injury 2 ~<br />
Control Ratings Control<br />
99 100 96<br />
.\. "_. -r-.,~ ..." '.-1<br />
• ; ~<<br />
~ '; o.o .Ell<br />
95 1.0 71<br />
2 0.0 25<br />
2l 0.0<br />
40 0.0 69<br />
87 ~.3 --<br />
100 0.0 98<br />
100 1·7<br />
96 0.7 99<br />
100 2.0 --<br />
I<br />
'90<br />
0<br />
0"<br />
-:t<br />
l.<br />
2.<br />
Percent crabgrass cont'ro1 calculated on the basil3 of' averagenulliber of plants per square foot in ·chec<br />
at the time of estimating; average of' 9 l;lamp1es,_3 o~e square foot samples per replicate.<br />
TUrf injury ratings: O-none; 1-slight; 2-modera'tej3'-severe; 4-comp1ete }till.<br />
3· Percent control based on estimates of percent crabgrass in checks at time of estimating.
Change language