Vol. 15—1961 - NorthEastern Weed Science Society

: i
I
Table 2. Stand Counts of Quackgrass and Yields of Silage Corn from Fall and Spring Treatments, 1960.
I -­
Ave~ }lo. of Quackgrass
I
Yield of Silage Corn in Tons/A.
I
I shoots/sq. ft. * at 7", Moisture**
Treatment : Fall . Spring
Fall Plowed
Spring~Plowed
No. Cultivated**fNot Cultivated tultivated : Not Cultivated Cultivated :Not Cultivated :Cultivated ;Not Cultivated
I
I
I • 'f I I I I I
I I I I I t I
,
I I I I t I
I I I I I t
I I I I I I I
I I I I I t I
! I I I I I I
I I I I I
1 4.5 9.5 1.0 1.6 14.8 16.2 19.6 14.9
I
2 0.17 1.7 0.14 0.:;:; 16.0 15.8 18.0 14.4
:; 1:;.7 12.2 18.0
I I 13·9
I I I I I I I
4
I 9·5 I 9·5 I :;·3 4.9 17.5
I I
13·0
I
17·1
I 13·5
I I I I I I I
5 12.1 6.:;
I I I I I I 18·1 12.8
I
I I I I I I I
6 12.6 10.8
I I I
I
I I 11·5
" '
I 11.5
I I I I
14.0
I
10.:;
I I
1 I I I I I I 15·5 14.0
I
8 6.3 8.5 :;.2 5.7 16.0-
I I I I I
15.5
I 16·1 14.0
I
I I I I I I I
9 4.0 0·5 18.9 13·1 18.0
I 1·3 I I 0·1
I I I I 16.7
I I i I I I I
10 ;
14.6 10.8
I I I I I
19.8
I 13·3
I I I I I I I
11 14.0
I I I I I 13·3 I 11·8 I 14.4
I I I I I I I
12 I I I I
16.0
I 12.1 I 18.2
I
10.8
I I I I I I I
1:; I 9·1 I 11·0 I 6.0 I
6.0 15·3 t 14.9 t 20.0
I 16.9
I I I I I I I
14 I 11-3 I 18.0 I 6.0 I 1·5 16.6 I 18.2 I 18.5 t 16.0
I I I I I I
15 I 11.0 I 15·0 I 5·0 I 6.1 15·5 • I 14.8 I 16.6 I 13·7
I I I I I I I
16 I 26.0 I 25·0 I 25·0 I 23.0 12.1 I 11.5 I 14.6 t 12.1
I I I I I I I .
I I I I
I I I
* The average of 3 - 2 sq. ft. quadrat counts per plot. The blank spaces:in the table were those pl.ots where the
. stand of Quackgrass, based on visual observation, compared to the check treatment.
** The yield values have been corrected for stand -- to the same number of harvested plants per plot~
**'. The s'tand count au the -CUltivated cheek plots was made ·in the row.
w
~
I-'
..