-3-


Table 1. Response of sugarcane and weeds to preemergence herbicides at 20
 weeks after application on sand soil (Moore Haven).


 Sugarcane*- Weed Control*
Herbicide and Rate (Ib/A ai) Stand Growth Grass B'leaf


amiben
dicamba
fenac
fenac
2,4-D amide (EMID)
2,4-D amine
2,4-D amine
2,4-D amine
2,,4-D amine 4 Ib i
 30 gpa diesel oil
 silvex
 atrazine
 simazine
 propazine
 prometone
 prcmetryne
 ametryne
 Geigy-34696
 diuron
 monuron
 isocil
 bromacil
 alipur
 cycluron
 Bayer-40557
 DCPA
 dichlobenil
 diphenamic (Lilly)
 diphenamid (Jpjohn)
EITC +.2,4-D incorp
swep
FW-925
trifluralin incorp.
tritac
Limit


 6
 4
 6
 9
 6
 2
 4
 8
n

 5
 4
 4
 4
 4
 4'
 4
 4
 4.8
 4.8.
 2.4
 2.4
 6
 6
 7
 15
 10
 8
 8
 6+3
 8
 8
 6
 10
 2 gpa


* Percentages of the best treatment.


100%
100
100
100
100
100
100
100

100
100
100
100
100
 94
100
100
100
100
87
62
62
100
100
100
100
100
100
100
100
94
100
100
94
100


100%
100
100
100
100
 94
 100
 87

 100
 100
 94
100
 94
 87
 94
 94
 100
 94
 81
 44
 50
 100
 100
100
100

100
87
100
81
- 94
100
94
94


 94%
 100
 100
 100
 81
 94:
 81
 81

 94
100
 94
100
62
100
94
100
94'
100
100
100
100
100
100
100
81
81
100
100
100
94
94
100
94
100


75%
94
75
87
12
56
50
75

87
81
94
100
94
87
75
44
81
69
100
69
94
25
62
75
44
94
44
81
56
31
81
69
81
31