630 
Journal of Agricultural Research 
Vol. XXIV, No. 7 
Tabi^E II .—Chlorosis of rice on calcareous soils as influenced by fertilization with 
ammonium phosphate and ammonium sulphate 
SPRAYED PLANTS CUT 42 DAYS AFTER PLANTING 
Nitrogen added as— 
Phosphoric acid added 
as— 
Yield 
of dry 
matter. 
Hydro¬ 
gen-ion 
concen¬ 
tration 
of soil 
water 
at har¬ 
vest. 
Num¬ 
ber of 
plants. 
Appearance of plants. 
NHiHsPO^. 
(NH4)2SOi. 
NH4H2P04. 
H 3 PO 4 . 
Gtn. 
Gnt. 
Gtn. 
Gm. 
Gm. 
Pn. 
I. 2 $ 
0.1 
4. X 
7. 7 
5 
Green. 
I. 25 
. 5 
6.0 
7. 7 
5 
Do. 
I- 2 S 
X. 0 
9.6 
7. 7 
5 
Do. 
I. 25 
2.5 
9. 7 
7.7 
5 
Do. 
0.02 
I- 23 
0. t 
4.8 
7.6 
S 
Yellow spotted with 
green. 
, lO 
I- IS 
•5 
4.9 
7-7 
5 
Do. 
. 20 
x.os 
1.0 
4. ^ 
7.6 
S 
Do. 
»50 
•IS 
2-5 
2.4 
7.6 
5 
Do. 
UNSPRAYED PLANTS CUT 42 DAYS AFTER PLANTING 
u 25 
X. 25 
I'25 
X. 25 
X. 23 
I- IS 
1.05 
• 7 S 
X. 25 
0.1 
2. 9 
7 -S 
7.8 
7.6 
7*7 
7*7 
7-7 
7.6 
5 
Green. 
. 5 
3-9 
6.9 
S-o 
I* 3 
5 
Do. 
1.0 
5 
Do. 
3*5 
5 
Do. 
0.02 
0. X 
5 
Yellow. 
. 10 
. 5 
2.9 
5 
Do. 
. 20 
1.0 
2.0 
5 
Do. 
.50 
2.5 
. 9 
7.6 
5 
Do. 
4*0 
7. 7 
5 
Green. 
SPRAYED PLANTS CUT 77 DAYS AFTER PLANTING 
z8 
X. 25 
0. X 
60.1 
7. 2 
5 
Green. 
19 
I. 25 
. 5 
52.8 
7.3 
5 
Do. 
20 
X. 25 
X. 0 
65. 2 
7.3 
5 
Do. 
2 X 
I. 25 
2-5 
65.3 
7.3 
5 
Do. 
22 
0.02 
1.23 
a x 
51-0 
7-3 
S 
Do. 
23 
. 10 
X. IS 
•S 
SS-o 
7-3 
s 
Striped. 
34 
. 20 
1.05 
1.0 
60.6 
7-3 
s 
Green. 
25 
•SO 
•75 
3*5 
47-9 
7*3 
s 
Do. 
UNSPRAYED PLANTS CUT 77 DAYS AFTER PLANTING 
26 
1.25 
0. I 
59. 5 
7.3 
5 
Green. 
27 
X. 25 
. 5 
46. 0 
7.4 
5 
Do. 
28 
I. 25 
1.0 
S 3 ’ 5 
7.4 
5 
Do. 
29 
X. 25 
2.5 
S 7 ’ S 
7. 5 
5 
Do. 
30 
0.02 
1.23 
0. X 
33-6 
7-4 
S 
Yellow. 
31 
. xo 
I- IS 
•5 
27.9 
7-3 
S 
Do. 
32 
.20 
x.os 
1.0 
95 
7-7 
I 
Do. 
33 
•50 
•75 
2-5 
4-3 
7 - 7 
2 
Do. 
34 
I- 25 
54-6 
7 ’S 
S 
Green. 
