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Illinois Fertilizer Conference Proceedings
January 25-27, 1999

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Table 1. Weed control and crop injury ratings for corn and soybeans treated with waste-pile soil or sprayed with herbicides. Ratings are the means of observations taken during June and August 1986.
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Treatment1
%Crop Injury2
% Weed Control3
Foxtail
Velvet Leaf
---------------------------------Soybeans-----------------------------------
CHECK
0
9
26
1x-N
33
87
76
5x-N
95
100
100
1x-S
10
79
72
2.5x-S
23
75
65
5x-S
20
84
83
-------------------------------------Corn------------------------------------
CHECK
3
35
49
1x-N
10
95
96
5x-N
10
99
99
1x-S
0
74
81
2.5x-S
3
79
87
5x-S
7
93
91

1/ lx-N, 5x-N = herbicide spray mixture equivalent to 3.36 and 18.6 kg/ha of alachlor, respectively; 1x-S, 2.5x-S, and 5x-S =waste-pile soil applied in amounts to approximate 3.36, 8.4, and 18.6 kg/ha of alachlor, respectively.

2/ 0 = no injury; 100 = crop kill (based on symptomology and plant stand).

3/ 0 = no control; 100 = complete control


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