Vol. 15—1961 - NorthEastern Weed Science Society

Vol. 15—1961 - NorthEastern Weed Science Society Vol. 15—1961 - NorthEastern Weed Science Society

08.06.2015 Views

234. Table 2. Effoct of several herbicid&s on weed control and crop response with transplanted broccoli. Cropl Weed 2 Yield 11 Broccoli treatment Injury Control No. Heads Wt..-Lbs. ----------------------------------------~--~------~-~-~-~~--~-~~ Dacthal 4 Ibs/A. gran. 1 3.0 19 10.9 u 8 II II 13.018 12.5 "12 It n . . 1 4.0 25 16.8 Amibin 2 _ "" ft 4 11" 1 1 4.0 5.0 15 16 10.8 12.2 Dinoben 2" II 4 Q" II 1 1 4.0 4.0 16 21 . 10.4 12.6 Trietazine 1.5 II It 1 II 3 tI n 2 4.0 5.0 18 19 10.4 7.8 Simazine 1 II II II 2 II II 1 1 4.0 4.5 20 8 u.4 2.8 Atrazinel fl It 3 n 2 "It , 5.0 5.0 2 0 0.8 0 Monsanto 15336 _ 4 If liq. 1 2.0 12 8.6 It 8­ 1111 1 3,,0 18 12.0 Vegadex 4-" ,II 1 3.5 24 14 ..7 Dicryl 4­ fI II 1 3~5 14 10~ 2 Stauffer 2061 4 II If 1 3.0 19 12.3 II II • II 1 4.0 20 Eptam It It 2 4.0 21 II 8 4. 12(>2 1309 19'10 It 4 It gran. 2 4.5 24 Check 1 1.0 19 13.2 LoS.D. 5% 9 4.9 1 2 1 D no injury 5-· severe 1 ==no control 5= complete control S~: Dicry1, Vegadex, Stauffer 2061, Trietazine, and Monsanto 15336 looked promsing for- weed control in direc:t seeded;' broccoli. Dactha1 did not injure thEr.crop but rates used were too low for satisfactory weed control. Amibin, dinobin, Dacthal, Ivonsanto ·15336, Stauffer 2061, Vegadex, and Diaryl pe:rf'ormed well, applied to well establishedr.ransplanted broccoli.

PRE-EMERGENCEWEEDCONTROLTN ceRN s, ,,~,.,':a,le1,ghl , .-.+! ''l- ~_ ' ,i'he,1960 pre-~mergl1ln~~, :weed control treat mant s were 13imi la r to tile plots es tab:lt s:h~d,ln the, lat e .f art 1 es and early ft f t i as b e ca use of the int,erest in granular 2, 4-D. i'he first 2i 4-D pre-emergence weed control in corn in the United states was done by J.C. Anderson and D.E. Yolf in New Jersey in 1946. ~he 2, 4-D was applied just before emergence. From 1947 to 195" many investigators in the northeast applied 2, 4-D at planting time and also just before emergence of the corn. Since 19',. very little work has been done with 2, 4-D at planting time because of the chances of more injury to the corn. The corn, in 1960 wasp'lanted with a four row planter. The center two rQ~S w~re treated and the edge rows left as checks. fhe results given fn Table I were obtained by counting weeds in the treated rows and adjacen. untreated rows to obtain the per cent control. There was a goad s'tend of broadleaf weeds in all areas, but grass population was scattered. The tr~atments marked:e~riy were~pplied the day of planting. All other treatments were applied just before Pcoma up" of the corn .. Granular 2, 4-D and liquid 2. 4-D reacted in a very similar manner.. The corn in these plots was slightly stunted when the plants were 4-, inches't"al1, later in the season you could see n o' injury. r r you 'did not have nontreated rows next to the treated area, you could not see the stunting. Atrazine and sim~zine were outstanding in controlling both broadleaf and: grassy weeds~ Granular s1mazine was somewhat poorer than simaz1ne 80W. 1. pr(}f~ssor at AgrCJn"my. Penn str:ite TJnivers1ty.

234.<br />

Table 2. Effoct of several herbicid&s on weed control and crop response with<br />

transplanted broccoli.<br />

Cropl <strong>Weed</strong> 2 Yield 11 Broccoli<br />

treatment Injury Control No. Heads Wt..-Lbs.<br />

----------------------------------------~--~------~-~-~-~~--~-~~<br />

Dacthal 4 Ibs/A. gran. 1 3.0 19 10.9<br />

u 8 II II 13.018 12.5<br />

"12 It n . . 1 4.0 25 16.8<br />

Amibin<br />

2 _ ""<br />

ft<br />

4 11"<br />

1<br />

1<br />

4.0<br />

5.0<br />

15<br />

16<br />

10.8<br />

12.2<br />

Dinoben 2"<br />

II 4 Q"<br />

II 1<br />

1<br />

4.0<br />

4.0<br />

16<br />

21 .<br />

10.4<br />

12.6<br />

Trietazine 1.5 II It 1<br />

II 3 tI n 2<br />

4.0<br />

5.0<br />

18<br />

19<br />

10.4<br />

7.8<br />

Simazine 1 II II<br />

II 2 II II<br />

1<br />

1<br />

4.0<br />

4.5<br />

20<br />

8<br />

u.4<br />

2.8<br />

Atrazinel fl It 3<br />

n 2 "It ,<br />

5.0<br />

5.0<br />

2<br />

0<br />

0.8<br />

0<br />

Monsanto 15336 _ 4 If liq. 1 2.0 12<br />

8.6<br />

It<br />

8­ 1111<br />

1 3,,0 18 12.0<br />

Vegadex<br />

4-"<br />

,II<br />

1 3.5 24 14 ..7<br />

Dicryl<br />

4­ fI II 1<br />

3~5 14<br />

10~ 2<br />

Stauffer 2061 4 II If 1 3.0 19 12.3<br />

II<br />

II • II 1 4.0 20<br />

Eptam<br />

It It 2 4.0 21<br />

II 8<br />

4.<br />

12(>2<br />

1309<br />

19'10<br />

It<br />

4 It gran. 2 4.5 24<br />

Check 1 1.0 19 13.2<br />

LoS.D. 5% 9 4.9<br />

1 2<br />

1 D no injury 5-· severe 1 ==no control 5= complete control<br />

S~: Dicry1, Vegadex, Stauffer 2061, Trietazine, and Monsanto 15336 looked<br />

promsing for- weed control in direc:t seeded;' broccoli. Dactha1 did<br />

not injure thEr.crop but rates used were too low for satisfactory weed control.<br />

Amibin, dinobin, Dacthal, Ivonsanto ·15336, Stauffer 2061, Vegadex, and<br />

Diaryl pe:rf'ormed well, applied to well establishedr.ransplanted broccoli.

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