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Vol. 15—1961 - NorthEastern Weed Science Society

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--<br />

Table II Main Effects -of Herbicide on the Fructose Content of Quackgrass<br />

Rhizomes at all Sampling Dates in the 1959-60 Experiment<br />

323.<br />

Sampling<br />

Date<br />

June 15<br />

1959<br />

Herbicides. Means (per cent), Homogenous<br />

Series and Per Cent Reduction<br />

from each Treatment<br />

I<br />

, Atr .--Si~~ OJ Ami.! Fen. No herb. Da1.<br />

6.0 9.3 15.8 20.3 20.4 21.9<br />

'. (71)._J~4) i<br />

(23) _(0) (-7)<br />

I<br />

I<br />

Levels of<br />

Signf.f icance<br />

(per cent)<br />

1<br />

5<br />

Untr~ated<br />

Mean<br />

39.6<br />

Aug.<br />

1959<br />

5<br />

.0<br />

Atr.<br />

6.3<br />

,_(74)<br />

Sim. : Ami. -,Fen.<br />

7.8 13.5 22.2<br />

(67)., (43) - (7)<br />

1-:.<br />

No herb.<br />

23.8<br />

Dal.<br />

23.9<br />

(0)<br />

\<br />

I<br />

1<br />

5<br />

41.9<br />

_.<br />

Sept.<br />

1959<br />

10<br />

I AEr.-Sim.<br />

I<br />

-, Ami.<br />

4.1 4.8 15.9<br />

L~~(79_), (31)<br />

! Da1.<br />

17.1<br />

(26)<br />

.. Fen •<br />

18.0<br />

(22)<br />

No herb.<br />

23.0<br />

I 1<br />

5<br />

40.6<br />

, Atr. Sim. " Ami. Fen.<br />

Nov.<br />

1959 10 4.8 6.6 18.6 20.8<br />

: (83) __ (771 .. (35) (28)<br />

Dal.<br />

21.0<br />

__ ._ ...____ I<br />

(27)<br />

0._ /<br />

No herb.<br />

28.8<br />

1<br />

5<br />

38.0<br />

May 10<br />

1960<br />

Atr.<br />

1.7<br />

(90)<br />

I Sim.<br />

9.7<br />

,.~~3)<br />

Ami.<br />

11.1<br />

(34)<br />

Dal.<br />

13.1<br />

(23)<br />

Fen.'<br />

13.2<br />

(22~-!<br />

No herb.<br />

16.9<br />

1<br />

5<br />

19.7<br />

Legend:<br />

- Atrazine<br />

Atr.<br />

Sim. Simazine<br />

Ami. - Amitro1-T<br />

Fen. Fenac<br />

Dal. - Da1apon<br />

No herb. - No herbicide

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