Vol. 15â1961 - NorthEastern Weed Science Society
Vol. 15â1961 - NorthEastern Weed Science Society Vol. 15â1961 - NorthEastern Weed Science Society
334. PRELIMINARYRESULTSONTHE USE OF CHEMICALSFORNt1roRASSCONTROL IN FIELD CROPS Stanford N. Fertig !I (A Summary Report) INTRODUCTION: . During the ·past 10 years, Nutgrass has spread widely on NewYork farD1S and must be cons idered as a major we.ed problem in every 8@iricultural county in the state. The generally held idea that Nutgrassis. a problem only on wet or poorly drained so11s is. in error. Many of the most serious infestations are on well and moderately drained soils of high fertUity and on many of the better farms. The control of Nutgrass in growing crops by cultural methods is not economically feasible or effective. Cultural methods tend only to spread the tubers to adjacent un1nfested areas. EXPERIMENTAL METHODANDPROCEDURE: The experiment was located on the Griswold Farm, Cortland County, N. Y. The area had been seeded to millet during the first week of June, 1959. On June 15, the selected plot area was fitted using a spring-tooth harrow. On June 23, the chemic als listed in Table 1 were applied as incorporated soil treatments. The plots were harrowed twice (to a depth of 4 inches) immediately after the chemicals were applied. The post-emergence treatments (Table 1) were applied to plots which had no cultural treatment. The millet and Nutgrass averaged five inches tall at the time of application. The so11 incorporated treatments were replicated two times and the postemergence treatments replicated four times. RESULTSANDDISCUSSION: Based on observations and stand counts, the Eptam and R-1607 at the 6-pound rate were the most effective of the so11 incorporated treatments in reducing the stand of Nutgrass. The R-206o and R-206l and the 2- and 4-pound rates of Atrazine were least effective. However, the stand of Nutgrass was markedly reduced. The 6- and 8-pound rates ot Atrazine as incorporated treatments were no more effective than the 4-pound rate of Eptam or R-1607. Based on the stand counts, all rates of Atrazine were effective in reducing the stand of Nutgrass when applied as post-emergence sprays. The 2 pound rate would be considered less than desirable, but the reduction in Y Professor of Agronomy, Cornell Un1veraity, Ithaca, NewYork.
Table 1. Chemicals Used as SOU lnco~rated and Post-emergence Treatments I f~ f Rates per Acre and Stand Counts aD Nutgrass. l1> ~a gM 11 0 .OQ I"f ..g s Ao n o ~ o )-l;) '0 ~ I"f p. Ol ~ ,.... !» ..... ~ ~ Treatment No. Incorporated Chemical USed as Incorporated or Poet-emergence Treatments 1 Eptam Z Eptam ; R-1607 4 R-1607 5 R-z06o 6 R-ZoGO ~ 7 R-z061 n 8 R-ZoG1 o ~ 9 Atrazine ti;' 10 Atrazine 12·1 SII Atrazine 6.0 7·7 6.; i t:+ fi 12 Atrazine 1; Check 14 Check Post-emergence ,'freatmei:rts 1 Atrazine 2 Atrazine 3 Atrazine 4 Check Aver. number of' Ra.te/A. Nutgrass Plants! sq. ft.* 1bs. A.E. August 6, 1959 4.0 6.0 4.0 6.0 4.(l 6.0 4.0 6.0 2.0 4.0 8.0 0.0 0.0 *Average of' 3 - 2 sq. ft. quadrat counts per plot. 5.8 2.8 6.1 z.8 16.2 9·2 16'.2 15·1 21.6 60.0 55·1 12.4 2.8 2.1 54.5 ~ II) [ i i til ~ ! Q ~ 5 s:a. t:+ o t:+ g o s - ~ i"3 ~ ti;' ..... . w W \J1 ..
- Page 283 and 284: Table 2. Effect of season of applyi
- Page 285 and 286: L 1-l34B9 ,Jiphenyllactelonitrile o
- Page 287 and 288: 287. Halts F-24, Halts F-26, Halts
- Page 289 and 290: POST-.EJ.iEhGENCE CONThOLOF CIiABGI
- Page 291 and 292: ,veedone at 4 pounds of tL.cl per a
- Page 293 and 294: ( ( ( Table I. Post-Emergence Contr
- Page 295 and 296: • •• ., .. • •• ',' •
- Page 297 and 298: 297. compatible with grub-proofing
- Page 299 and 300: 299, Diphenatrile Results During th
- Page 301 and 302: 301. tentative generic name triflur
- Page 303 and 304: - 1 PRE-ENERGENCE CRABGRASS CONTROL
- Page 305 and 306: Discussion 30; • a) Pre-emergence
- Page 307 and 308: 307. TABLEI -- Comparison of Produc
- Page 309 and 310: -' Table II (can't) 309. Stand of S
- Page 312 and 313: 312. THEEFFECTIVENESSOF COMBINATION
- Page 314 and 315: 314. Table 2. Stand Counts and Sile
- Page 316 and 317: 316. planted control before these h
- Page 318 and 319: Table II. The control of quackgrass
- Page 320 and 321: 320. growing season in the 1957-59
- Page 322 and 323: 322. Table I Main Effects of Cultur
- Page 324 and 325: 324. Atrazine by September 10 when
- Page 326 and 327: 326. Another effect of Atrazine tha
- Page 328 and 329: 32S. Amitrol-T was intermediate in
- Page 330 and 331: Qolumn Separation: Cellulose. A 24
- Page 332 and 333: 332, Figure -I. Chromatogram of qua
- Page 336 and 337: 336. DATEOF BERRYHARVESTAS IT AFFEC
- Page 338 and 339: within three inches of the soIl sur
- Page 340 and 341: 340 .. The growth ra.te of Horse ne
- Page 342 and 343: 342. dish containing ten seeds bet\
- Page 344 and 345: 344. is not a factor in in It is
- Page 346 and 347: 346 • .Absornt:j.Qn Qn Exchange R
- Page 348 and 349: 348. The' chrona tog ram."WaS first
- Page 350 and 351: 350. PROGRESSREPORTON A STUDYOF THE
- Page 352 and 353: 352. 7. Fluctuating warm and cold w
- Page 354 and 355: 354. A clos.e correlation was found
- Page 356 and 357: 356. 1 THE ANATOMICAL NATUREO:BTHE
- Page 358 and 359: 358. The 2,4,5-TP was most effectiv
- Page 360 and 361: Table I. Effect. of Pre-emergence T
- Page 362 and 363: INTRODUCIIOB: THEEFFECTOF WEEDCOMPE
- Page 364 and 365: 1";. 1958 JFab1e I (cont ' d) Treat
- Page 366 and 367: 366. fiE USE OF FENACFOR QUACKGRASS
- Page 368 and 369: 36$. SUMMARY: Based on a I).umber o
- Page 370 and 371: - Table 1. Chemicals and Rates Used
- Page 372 and 373: 372. On spring plowed plots I where
- Page 374 and 375: Table 1. Treat.ments Used and Stand
- Page 376 and 377: 37t. PRELIMINARYRESULTSONTHE CONTRO
- Page 378 and 379: 378. CHEMICAL TREATMENTS FORTHECONT
- Page 380 and 381: Table ;. Visual RatiDgs and Stand C
- Page 382 and 383: ANN11AL WEEDCONTROL IN SILAGECORN1
Table 1. Chemicals Used as SOU lnco~rated and Post-emergence Treatments I<br />
f~ f<br />
Rates per Acre and Stand Counts aD Nutgrass.<br />
l1><br />
~a<br />
gM<br />
11 0<br />
.OQ<br />
I"f<br />
..g s<br />
Ao<br />
n<br />
o<br />
~<br />
o<br />
)-l;)<br />
'0<br />
~<br />
I"f<br />
p.<br />
Ol<br />
~<br />
,.... !»<br />
.....<br />
~<br />
~<br />
Treatment<br />
No.<br />
Incorporated<br />
Chemical USed<br />
as Incorporated<br />
or Poet-emergence<br />
Treatments<br />
1 Eptam<br />
Z Eptam<br />
; R-1607<br />
4 R-1607<br />
5 R-z06o<br />
6 R-ZoGO<br />
~<br />
7 R-z061<br />
n<br />
8 R-ZoG1<br />
o<br />
~<br />
9 Atrazine<br />
ti;'<br />
10 Atrazine<br />
12·1<br />
SII<br />
Atrazine<br />
6.0<br />
7·7<br />
6.;<br />
i<br />
t:+<br />
fi<br />
12 Atrazine<br />
1; Check<br />
14 Check<br />
Post-emergence ,'freatmei:rts<br />
1 Atrazine<br />
2 Atrazine<br />
3 Atrazine<br />
4 Check<br />
Aver. number of'<br />
Ra.te/A. Nutgrass Plants! sq. ft.*<br />
1bs. A.E. August 6, 1959<br />
4.0<br />
6.0<br />
4.0<br />
6.0<br />
4.(l<br />
6.0<br />
4.0<br />
6.0<br />
2.0<br />
4.0<br />
8.0<br />
0.0<br />
0.0<br />
*Average of' 3 - 2 sq. ft. quadrat counts per plot.<br />
5.8<br />
2.8<br />
6.1<br />
z.8<br />
16.2<br />
9·2<br />
16'.2<br />
15·1<br />
21.6<br />
60.0<br />
55·1<br />
12.4<br />
2.8<br />
2.1<br />
54.5<br />
~<br />
II)<br />
[<br />
i<br />
i<br />
til<br />
~<br />
!<br />
Q<br />
~<br />
5<br />
s:a.<br />
t:+<br />
o<br />
t:+<br />
g<br />
o<br />
s<br />
-<br />
~<br />
i"3<br />
~<br />
ti;'<br />
.....<br />
. <br />
w<br />
W<br />
\J1<br />
..
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