Vol. 15â1961 - NorthEastern Weed Science Society
Vol. 15â1961 - NorthEastern Weed Science Society Vol. 15â1961 - NorthEastern Weed Science Society
278. Table 1. Crabgrass Control wi ttl Pre-emergence Herbicides JtH31 Sept. 20 Rate active Crabgrass Crabgrass ,ingred., , %'1 plants ~er ' .% plants rr . Herbicid8 Iba./A. eontrol "sq.ft. Control l sq.ft., !Contro1s .. 0 1,790 0 '890 Zytron 10 96 32 87 7 20 99+ .02 99+ . .03 Decthal 7.S 99+ , .3 95 3 10' 99+ .35 98 .3 Calo1um arsenate 3 370 ~2 8.7 95 , ,2.7 555 98 ~$ 100 .0 Chlordane 60 77 82 60 267 1203 66 85 53 81 ilpax tl 7844 77 103 36; 241 ~~~-~~---------~------~--~-~----~----- 1. Percentage control based on visual estimates of area covered by crabgrass in treated and untreated plots. 2. Average of 8 to 12 samples taken in each plot. 3. Applied May 17; all otb:lrs applied April 29, before crabgrass emergence. 4. Rate of "PUll per acre , , .
279. following application. The high dosage of 120 lbs. of actual chlordane per acre, applied early post-emer5cnce, did not injure the established turf, although, as expected, poor control of crabgrass resulted. "Pax" caused an early flush of growth due to the fertilizer ingredient but also failed to control crabgrass satisfactorily. It must be noted that due to a calibration error, "Pax" was applied at approximately 87 lbs./A. less than the dosage suggested on the bag. This represents an 11% error which could have affected the results. Watering following application did not appear to influence the results. The turf grasses appeared unaffected by Ilpax." Preliminary trials were conducted with several pre-emergence herbicides to control cr~grass in tt!-l't. Under the condi tiona of these experiments none of the materials, including chlordane, "Pax," zytron, dacthal or calcium arsenate, was satisfactor.Y' for immediate use on a mid-spring seeding of turf grasses. On established turf, however, zytron, dacthal and calcium arsenate provided better than 9.5%control of crabgrass without injuring the turf. Chlordane and "Pax" failed to control crabgrass satisfactorily.
- Page 227 and 228: 227 • . TABLEIV' -' WEED CONTROJ.
- Page 229 and 230: 2290 'of.' .'J • ~ : ~. ... :.' "
- Page 231 and 232: 231. Conclusions The results publis
- Page 233 and 234: possibility of too severe thinning
- Page 235 and 236: PRE-EMERGENCEWEEDCONTROLTN ceRN s,
- Page 237 and 238: INCORPORATED ANDUNINCORPORATED·LIQ
- Page 239 and 240: ( ( ( Table 1. Weed Control Ratings
- Page 241 and 242: at both weed rating dates at Newark
- Page 243 and 244: DNBP - Zytron Mixture for Weed Cont
- Page 245 and 246: ~ •• 245. ·Res~1~8 fr.o.George
- Page 247 and 248: 247. Weed Control in Soybeans with
- Page 249 and 250: 249, EFFECTOF HERBICIDESONSEEDPRODU
- Page 251 and 252: 251. TABLE3. EFFECTSOF APPLICATIONS
- Page 253 and 254: 253. almost a week, with treatment
- Page 255 and 256: ( ( ( , Table 1. Effects of Various
- Page 257 and 258: Table 3. anal.ysi.s of Soil l,esidu
- Page 259 and 260: Results and Discussion ;llien the f
- Page 261 and 262: 4. Immediate treattlent injury to t
- Page 263 and 264: ( ( ( Table n. :'.!:sti.Jl'ated.'er
- Page 265 and 266: have very littla real II'+eaningas
- Page 267 and 268: 267. Table 2. Pre-emergence crabgra
- Page 269 and 270: 269 • ..., : Table 1.. 1960, Rain
- Page 271 and 272: 271. Chlordane must be used at rate
- Page 273 and 274: u • 2 ( ( ( t Table 3. Effect of
- Page 275 and 276: 275. Table 5. Effect. of preemergen
- Page 277: 277. In one area, the old turf was
- Page 281 and 282: 2$1. The standard date of applicati
- Page 283 and 284: Table 2. Effect of season of applyi
- Page 285 and 286: L 1-l34B9 ,Jiphenyllactelonitrile o
- Page 287 and 288: 287. Halts F-24, Halts F-26, Halts
- Page 289 and 290: POST-.EJ.iEhGENCE CONThOLOF CIiABGI
- Page 291 and 292: ,veedone at 4 pounds of tL.cl per a
- Page 293 and 294: ( ( ( Table I. Post-Emergence Contr
- Page 295 and 296: • •• ., .. • •• ',' •
- Page 297 and 298: 297. compatible with grub-proofing
- Page 299 and 300: 299, Diphenatrile Results During th
- Page 301 and 302: 301. tentative generic name triflur
- Page 303 and 304: - 1 PRE-ENERGENCE CRABGRASS CONTROL
- Page 305 and 306: Discussion 30; • a) Pre-emergence
- Page 307 and 308: 307. TABLEI -- Comparison of Produc
- Page 309 and 310: -' Table II (can't) 309. Stand of S
- Page 312 and 313: 312. THEEFFECTIVENESSOF COMBINATION
- Page 314 and 315: 314. Table 2. Stand Counts and Sile
- Page 316 and 317: 316. planted control before these h
- Page 318 and 319: Table II. The control of quackgrass
- Page 320 and 321: 320. growing season in the 1957-59
- Page 322 and 323: 322. Table I Main Effects of Cultur
- Page 324 and 325: 324. Atrazine by September 10 when
- Page 326 and 327: 326. Another effect of Atrazine tha
278.<br />
Table 1.<br />
Crabgrass Control wi ttl Pre-emergence Herbicides<br />
JtH31 Sept. 20<br />
Rate<br />
active Crabgrass Crabgrass<br />
,ingred.,<br />
, %'1 plants ~er ' .% plants rr<br />
. Herbicid8 Iba./A. eontrol "sq.ft. Control l sq.ft.,<br />
!Contro1s .. 0 1,790 0 '890<br />
Zytron 10 96 32 87 7<br />
20 99+ .02 99+ . .03<br />
Decthal 7.S 99+ , .3 95 3<br />
10' 99+ .35 98 .3<br />
Calo1um<br />
arsenate 3 370 ~2 8.7 95 , ,2.7<br />
555 98 ~$ 100 .0<br />
Chlordane 60 77 82 60 267<br />
1203 66 85 53 81<br />
ilpax tl<br />
7844 77 103 36; 241<br />
~~~-~~---------~------~--~-~----~-----<br />
1. Percentage control based on visual estimates of area covered by crabgrass<br />
in treated and untreated plots.<br />
2. Average of 8 to 12 samples taken in each plot.<br />
3. Applied May 17; all otb:lrs applied April 29, before crabgrass emergence.<br />
4. Rate of "PUll per acre ,<br />
, .
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