Table 5.2
Nutrient requirement
a
, and absorbed by representative crop plants (given tonnes per hectare; top row) and recommended macro- and micro-nutrient
doses/application
a
(lower row) for major crops that can be considered as sufficiency range (FAO fertilizer and plant nutrition bulletin 16; 2006). Each nutrient
application is based on requirement per growing season
Crops/plants
(top row is
nutrient
requirement
and bottom
row is nutrient
to be
supplied)
Macro nutrients (in kg/Ha unless mentioned otherwise)
Micronutrients (in kg/Ha, unless mentioned otherwise)
N
P
K
S
Ca
Mg
B
Fe
Mn
Cu
Zn
Mo
Cl
Si
Triticum
aestivum
(6.7
tonnes)
200
55
250
22
27
19
n.a
1.8
0.5
0.15
0.5
n.a
n.a
n.
a
120–
150
90
160
n.a
n.a
25
n.a
n.a
0.5%;
2–3
times
n.a
62.5kg
every
2–3
years
n.a
n.a
n.
a
Oryza sativa
(1 tonne
paddy)
20
11
30
3
7
3
0.015
0.15
0.675
0.018
0.040
0.002
n.a
52
50–
160
20–
80
20–60
n.a
n.a
n.a
n.a
1%; 2–
3
sprays
n.a
n.a
10–12
n.a
n.a
n.
a
Zea mays
(9.5
tonnes of
grain)
191
89
235
21
57
73
240
2.130
0.340
0.110
0.380
0.009
0.081 n.
a
50–
300
30–
100
30–100
30–
100
n.a
n.a
n.a
n.a
n.a
n.a
25kg
ZnSO
4
mixed
with
25kg
soil
n.a
n.a
n.
a
(continued)
5 Plant Roots and Mineral Nutrition: An Overview of Molecular Basis of Uptake and. . . 135