Vol. 15—1961 - NorthEastern Weed Science Society

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TABLEII. EFFECTOF HERBICIDESONWEEDGROWTH
ANDYIELDOF
ASPARAGUS AT ENDOF .:-
HARVESTPERIOD
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217.
Weed control!1
Predom. Species
Rate I-Poor to G : Grass Yield
Active 9-Excellent Weed Index~/ Weed Controll 1 B 8 Broadlea£ Market-
Herbicide Lbe./A. 7/1/60 7/1/60 7/5/60 1/5/60 ab1e-Lbs.
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Simazine 5,,00 8.3 1.34 1.6~l G 12.8
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Simaz1ne 3.75, 7.8 2.46 .89 G 14.0
"'-'
Atrazine 5.00 7.3 9.49 .59 G 12.9
-I :
Mon\l,ron 3.20 5.5 14.15 .31 i G 13.2
Ept8!D 6.00 3.5 37.59 .18 I/G 12.9
Atrazine 3.75, 4.5 18..85 .16
I I G 12.4
Eptam 4.00 3.5 41.35 I/G 13.5
'?!_J
Monufon 2.40 5.0 19.83 -.11 G 11.9
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Eptam 2.00 2.0 50.14 - .71 !/G 11.6
AtraZine 2.50 2.8 37.82 G 10.4
Honuron 1.60 2.0 41.75 - .89 G 11.5
'I •
Cheek 1 00 62.25 -1.63 ,-BIG 11.4
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1/ 1. = normal growth; 7 8:c011liner~iii control; 9 8 comple:e k~l1.
~/ Percent weed cover x height (cma.):lOO : Weed Indexe :See Lit. Cit. (6).
1/ Exp~essed as "Rsnk1ts". See Lit. Cit. (3,7).
~/ Means included in brackets are not significantly differ.n~ ~t the S~ level
(Duncan's Multiple Range Test). See Lit. Cit. (2).
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N.S•