Vol. 15â1961 - NorthEastern Weed Science Society
Vol. 15â1961 - NorthEastern Weed Science Society Vol. 15â1961 - NorthEastern Weed Science Society
- 306. c) Seedling toleranqe trials - XF-832: Seedling bent, blue and, rye grasses 'Were not injured when treated with .3/4or l~ Ib/lOOO sq ..ft., 3 or 6 weeks after seeding" Fescue and clover were injured somewhat at both rates. 14hile this chamical is intended as a pre-emergence crabgrass material, it caused a significant reduction in the stand of crabgrass llhen applied post-emergence to seedling crabgrass in the 2-leaf (1 inch) stage. Control was a1lllost complete at the Ii lb/lOOO sq. ft. rate. XF-834: Seedling fescue and clover were slightly affected but bent, blue and rye grass were not injured by either rate o This chemical had greater post-emergence activity than Al'1A.-41on seedling crabgrass, controlling crabgrass completely at both rates and times of application. XF-833: This was the most selective chemical of the three having practically no effect on turf grasses and clover. It was slightly less effective post-emergence on seedling crabgrass. Zytron 1328 and 1481: The dry form (1.481) produced slight injury onbent, blue ana fescue, while the liquid form (1328) produced considerable injury. Chlordane (product): This material produced no significant injury ort'seed::i.Ing turf grasses or clover. Dacthol (product): This material produced only very slight injury, iiiCSt"Ol'it in the early treatment. Conclusions Based on 1960 fleld tests, it is apparent that XF-832, w:i.thin the range of rates tested, most nearly achieves the objectives stated at the beginning of this paper. ' ' Zytron and Dacthol, tlhile offering excellent pre-emergence crabgrass control and satisfactory turf tolerance, have the disadvantage 'of preventing growth of turfgrass seeds planted within four weeks ,after application of these chemicals.
307. TABLEI -- Comparison of Products and Experimental l1aterials Crabgrass Control for Pre-emergence Location: Oak Terrace Country -Club, Amuler, Pa, l1ethod: Treatments uere applied on April 8, 1960. Each plot was 60 sq, ft. in size and treatments were replicated 3 times. Crabgrass started to germinate on April 22, and continued to germinate throughout the summer. To obtain the per cent control figures, crabgrass infestations in the treated plots were compared to the average infestation in 9 untreated check plots on the same day. Per Cent Crabgrass Control Chemical Rate June 15 Aug. 15 Sept. 15 Product Tricalcium arsenate + 100 98 75 2,4-D/2,4,5-TP Tricalcium arsenate 38 18 -24 "-- Chlordane @ rec. 58 o 29 Chlordane @ rec. -39 10 36 Dacthol @ rec. 100 99 97 Lead arsenate complex @ rec. 88 29 19 Experimental DAe-893 81b/A 96 99 98 DAe.-893 10 1b/A 100 99 99 DAc.:.893 12 1b/A 100 100 99 Zytrpn 1328 15 lb/A 100 98 99 Zytron 1328 201b/A 100 100 99 Zytron 1481 l51b/A 96 93 92 Zytron 1481 20lb/A 92 96 90 XF-832 3(4 l~M 96 98 81 IF-832 12"lb M 100 99 92 XF-834 3{41b/M 77 82 -11 XF-834 1~lb/r'1 85 87 79 IF-833 3 1b/M 62 51 19 XF-833 12"lb/11 . 99 97 87 -- Check plots 26% 61% 63% crab f'~.V(:>Y' r-.:rab (", V (f'(' ('(J:,':,,,1". tv 1 '1 {"~J" (*) as recOll11flendedby manufacturer
- 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 and 278: 277. In one area, the old turf was
- Page 279 and 280: 279. following application. The hig
- 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: Discussion 30; • a) Pre-emergence
- 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 334 and 335: 334. PRELIMINARYRESULTSONTHE USE OF
- 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
307.<br />
TABLEI -- Comparison of Products and Experimental l1aterials<br />
Crabgrass Control<br />
for Pre-emergence<br />
Location:<br />
Oak Terrace Country -Club, Amuler, Pa,<br />
l1ethod: Treatments uere applied on April 8, 1960. Each plot was 60 sq, ft.<br />
in size and treatments were replicated 3 times.<br />
Crabgrass started to germinate on April 22, and continued to germinate<br />
throughout the summer.<br />
To obtain the per cent control figures, crabgrass infestations in the<br />
treated plots were compared to the average infestation in 9 untreated<br />
check plots on the same day.<br />
Per Cent Crabgrass Control<br />
Chemical Rate June 15 Aug. 15 Sept. 15<br />
Product<br />
Tricalcium arsenate + 100 98 75<br />
2,4-D/2,4,5-TP<br />
Tricalcium arsenate 38 18 -24<br />
"--<br />
Chlordane @ rec. 58 o 29<br />
Chlordane @ rec. -39 10 36<br />
Dacthol @ rec. 100 99 97<br />
Lead arsenate complex @ rec. 88 29 19<br />
Experimental<br />
DAe-893 81b/A 96 99 98<br />
DAe.-893 10 1b/A 100 99 99<br />
DAc.:.893 12 1b/A 100 100 99<br />
Zytrpn 1328 15 lb/A 100 98 99<br />
Zytron 1328 201b/A 100 100 99<br />
Zytron 1481 l51b/A 96 93 92<br />
Zytron 1481 20lb/A 92 96 90<br />
XF-832 3(4 l~M 96 98 81<br />
IF-832 12"lb M 100 99 92<br />
XF-834 3{41b/M 77 82 -11<br />
XF-834 1~lb/r'1 85 87 79<br />
IF-833 3 1b/M 62 51 19<br />
XF-833 12"lb/11 . 99 97 87<br />
--<br />
Check plots 26% 61% 63%<br />
crab f'~.V(:>Y' r-.:rab (", V (f'(' ('(J:,':,,,1". tv 1 '1 {"~J"<br />
(*) as recOll11flendedby manufacturer
Change language