The  Woburn  Field  Experiments,  1909. 
383 
(6)  Experiments  with  Barley  {Great  Hill),  1909. 
In  these  the  plan  was  just  the  same  as  in  the  wheat  experi- 
ments just  recorded,  ten  plots  being  marked  out.  In  the  case 
of  the  barley  experiment,  however,  the  land  had  been  much 
better  “ done  ” than  was  the  case  with  the  wheat,  inasmuch 
as  kohl  rabi  had  been  previously  fed  off  by  sheep.  “ Gold- 
thorpe  ” barley  was  drilled  on  April  9,  1909,  and  the  top- 
dressings  were  applied  on  May  18.  The  crop  turned  out  an 
excellent  one,  and,  though  “ laid  ” in  parts  by  thunderstorms, 
the  crops  were  much  admired,  being  as  fine  as  any  in  the 
district.  The  crop  was  harvested  August  30-31.  The  results 
are  given  in  Table  XI. 
Table  XI. — Experiments  with  Nitrogenous  Top-dressings 
on  Barley,  1909. 
Great  Hill — Produce  per  acre. 
Plot 
Manures  per  acre 
Head  com 
Tail 
corn 
Straw, 
chaff,  &c. 
Value  of 
corn  per 
quarter 
on  basis 
of  29s. 
Weight 
Bush. 
Weight 
per 
bushel 
Weight 
Lh. 
Lb. 
Lh. 
C.  q,  lb. 
s.  d. 
1 
Calcium  cyana- 
mide*  . 
2,422 
44-8 
54-0 
180 
35  0 12 
31  0 
2 
Sulphate  of  am- 
monia,  1 cwt. 
2,830 
52-9 
53-4 
260 
38  0 26 
29  0 
3 
Calcium  nitrate’  . 
2,945 
55-4 
53-1 
222 
42  1 20 
29  0 
4 
Nitrate  of  soda’  . 
2,785 
52-3 
53-2 
200 
35  2 26 
28  0 
5 
No  top-dressing 
2,695 
50-6 
53-2 
107 
35  0 0 
31  0 
6 
Calcium  cyana- 
mide’  . 
2,602 
491 
530 
202 
34  2 26 
27  6 
7 
Sulphate  of  am- 
monia,  1 cwt. 
2,700 
51-4 
52-5 
175 
30  1 27 
29  0 
8 
No  top-dressing 
3,055 
67-9 
52-7 
245 
40  1 22 
31  0 
9 
Nitrate  of  soda’ 
2,600 
49-2 
52-8 
417 
38  2 5 
30  0 
10 
Calcium  nitrate’  . 
2,687 
50-9 
52-7 
275 
38  3 15 
30  0 
1 In  quantity  to  supply  as  much  nitrogen  as  that  contained  in  1 cwt.  sulphate  of 
ammonia. 
(c)  Experiments  with  Mangolds  {Road  Piece  Field),  1909. 
In  this  series  there  were  no  duplicate  plots.  A “ standard” 
dressing  of  manure  was  given  to  all  five  plots  alike,  consisting 
of  : — 
Farmyard  manure  . 
Superphosphate 
Sulphate  of  potash  . 
Salt  (applied  in  the  drills) 
12  tons  per  acre. 
3 cwt.  ,,  „ 
1 n )j 
2 „ „ 
This  manuring  was  given  April  24-27,  1909,  the  mangold 
seed  (“  Yellow  Globe  ”)  being  drilled  just  after,  and  the  top- 
