Vol. 16—1962 - NorthEastern Weed Science Society

334
Table ~. ,~,~fect of speed,~~~d. size and clap. of hopper fullness,C)I\ -../
t\,\e~nt of granular.~1al (in gIIla) delivered by Appl1catQr 1*.
, .
l'i./ "
~< 'J: Degree of Hopper .:rullness
Particle Size i full \ full !:!ll.
~
15/30 1,16.4 a 112.5 ... 113.8 a
24/~
" ~ 'j'-1::
lM+.9 de 131.4 de! 129.8 cd
30/60
~~ f
1.33.1 de 126.0 be 122.5 b
4 mph
15/30 7.9:.8 b 66.0 .'
24/48
'j',
69.3 ab
82.6 cd 83.6 cd 81.6 cd
30/60 .sa.s d 82.6 .Q4 79.5 c
2.m
15/30 53.6 b 46.5 •
49.4 a
24/48 58.1 c 58.9 c·· 56.9 be
l:
30/60 I 57.3 bc 58.5 ere, 55.6 be
* numbers fo1,~owed by, the a... letter within anyone
speed are not" significantly different from each other.
As shown in Figure 1, the ~P"" to which the hopper was filled made a
significant difference in the 8IIIOUrit'-ofgranules delivered, with the amount'
delive~ed generall)!' decreasing .. the·hopper varied f'om t-full to full. With'
the1S/30 material, the ,-full hopper had the least output •
.Sp'ced had a significant effe4ton the output of the different particl. sizes
(Table 1), usually the 24/48 particle size having the highest delivery rate
while the 30/30 part~c:1e size feUll_tween it and tlle',lS/30 size. The is/3D
particle, size .output wa. s1gnif1cantly lower than th. emeller sizes at all
speeds.
AppU.sator 2.
, ,Output varilition due to particle size was not .. great as in the previous
instance and the yield of the 30/60 particle size fell almost midway betwe~nthe
15/30 and the 24/48-.