GHANA, NKAWIE DISTRICT
Cassava
|
Harvested area: |
11 838 |
ha |
137 317 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.64 |
0.06 |
0.19 |
(macrolevel) |
|
IN2 |
0.59 |
0.21 |
0.20 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.36 |
0.98 |
5.91 |
(macrolevel) |
|
IN4 |
4.26 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
48.72 |
5.57 |
49.30 |
(production * nut content) |
|
OUT2 |
21.34 |
4.22 |
6.59 |
(production * residue removal * nut content) |
|
OUT3 |
0.00 |
0.00 |
8.39 |
(leaching formula, root depth = 0.6) |
|
OUT4 |
1.50 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
9.60 |
1.09 |
1.00 |
(5 tonnes/ha erosion) |
|
Total |
-68.3 |
-9.6 |
-59.0 |
|
Cocoa
|
Harvested area: |
48 493 |
ha |
10 652 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.06 |
0.08 |
(63 ha fertilized with kg P and kg K) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no organic inputs) |
|
IN3 |
7.36 |
0.98 |
5.91 |
(macrolevel) |
|
IN4 |
4.26 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
4.55 |
0.79 |
1.47 |
(production * nut content) |
|
OUT2 |
1.52 |
0.17 |
4.44 |
(50% of husk lost, put on one heap or used for soap) |
|
OUT3 |
5.52 |
0.00 |
8.34 |
(leaching formula, root depth = 0.7) |
|
OUT4 |
1.34 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
1.92 |
0.22 |
0.20 |
(1 tonne/ha erosion) |
|
Total |
-3.2 |
-0.1 |
-8.5 |
|
Cocoyam
|
Harvested area: |
9 514 |
ha |
97 475 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
4.11 |
1.22 |
1.83 |
(macrolevel) |
|
IN2 |
0.89 |
0.31 |
0.30 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.36 |
0.98 |
5.91 |
(macrolevel) |
|
IN4 |
4.26 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
47.13 |
3.07 |
29.92 |
(production * nut content) |
|
OUT2 |
4.87 |
1.23 |
7.89 |
(production * residue removal * nut content) |
|
OUT3 |
0.00 |
0.00 |
8.70 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.97 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
13.44 |
1.53 |
1.40 |
(7 tonnes/ha erosion) |
|
Total |
-50.8 |
-3.3 |
-39.9 |
|
Fallow
|
Harvested area: |
14 600 |
ha |
0 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.00 |
0.00 |
(no mineral fertilizer) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(input of manure is equal to removal of crop residues) |
|
IN3 |
7.36 |
0.98 |
5.91 |
(macrolevel) |
|
IN4 |
4.26 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
0.00 |
0.00 |
0.00 |
(no crop products) |
|
OUT2 |
0.00 |
0.00 |
0.00 |
(removal of crop residues is equal to input of manure) |
|
OUT3 |
9.93 |
0.00 |
8.33 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.34 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
0.96 |
0.11 |
0.10 |
(0.5 tonnes/ha erosion) |
|
Total |
-0.6 |
0.9 |
-2.5 |
|
Maize
|
Harvested area: |
11 455 |
ha |
19 953 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
5.86 |
1.20 |
2.42 |
(macrolevel) |
|
IN2 |
2.05 |
0.72 |
0.69 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.36 |
0.98 |
5.91 |
(macrolevel) |
|
IN4 |
4.26 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
29.26 |
7.12 |
8.27 |
(production * nut content) |
|
OUT2 |
5.07 |
1.00 |
11.19 |
(production * residue removal * nut content) |
|
OUT3 |
5.61 |
0.00 |
8.86 |
(leaching formula, root depth = 0.9) |
|
OUT4 |
2.34 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
9.60 |
1.09 |
1.00 |
(5 tonnes/ha erosion) |
|
Total |
-32.4 |
-6.3 |
-20.3 |
|
Plantain
|
Harvested area: |
11 725 |
ha |
96 106 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.33 |
0.08 |
0.65 |
(macrolevel) |
|
IN2 |
0.60 |
0.21 |
0.20 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.36 |
0.98 |
5.91 |
(macrolevel) |
|
IN4 |
4.26 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
5.74 |
0.71 |
28.03 |
(production * nut content) |
|
OUT2 |
0.98 |
0.25 |
5.26 |
(production * residue removal * nut content) |
|
OUT3 |
7.34 |
0.00 |
8.47 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.46 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
5.76 |
0.66 |
0.60 |
(3 tonnes/ha erosion) |
|
Total |
-8.7 |
-0.3 |
-35.6 |
|
Rice
|
Harvested area: |
1 462 |
ha |
2 245 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
4.07 |
1.02 |
3.00 |
(macrolevel) |
|
IN2 |
0.00 |
0.00 |
0.00 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.36 |
0.98 |
5.91 |
(macrolevel) |
|
IN4 |
4.26 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
26.49 |
7.73 |
3.68 |
(sedimentation of 1 mm/year, including enrichment factor) |
|
OUT1 |
17.81 |
5.21 |
5.25 |
(production * nut content) |
|
OUT2 |
2.60 |
0.53 |
8.23 |
(production * residue removal * nut content) |
|
OUT3 |
12.45 |
0.00 |
8.85 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.86 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
0.00 |
0.00 |
0.00 |
(no erosion, rice only in lowlands) |
|
Total |
7.5 |
4.0 |
-9.8 |
|
Yam
|
Harvested area: |
1 175 |
ha |
12 992 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
4.11 |
1.22 |
1.83 |
(macrolevel) |
|
IN2 |
0.80 |
0.28 |
0.27 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.36 |
0.98 |
5.91 |
(macrolevel) |
|
IN4 |
4.26 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
50.86 |
3.32 |
32.29 |
(production * nut content) |
|
OUT2 |
5.25 |
1.33 |
8.51 |
(production * residue removal * nut content) |
|
OUT3 |
0.00 |
0.00 |
8.69 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.96 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
13.44 |
1.53 |
1.40 |
(7 tonnes/ha erosion) |
|
Total |
-55.0 |
-3.7 |
-42.9 |
|
GHANA, WASSA AMENFI DISTRICT
Cassava
|
Harvested area: |
7 700 |
ha |
77 000 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.64 |
0.06 |
0.19 |
(macrolevel) |
|
IN2 |
0.14 |
0.04 |
0.09 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
42.00 |
4.80 |
42.50 |
(production * nut content) |
|
OUT2 |
13.80 |
2.73 |
4.26 |
(production * residue removal * nut content) |
|
OUT3 |
0.00 |
0.00 |
8.87 |
(leaching formula, root depth = 0.6) |
|
OUT4 |
1.49 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
8.66 |
1.15 |
0.70 |
(5 tonnes/ha erosion) |
|
Total |
-53.3 |
-7.6 |
-50.4 |
|
Cocoa
|
Harvested area: |
240 961 |
ha |
53 045 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.01 |
0.01 |
(40 ha fertilized with kg P and kg K) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no organic inputs) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
4.56 |
0.79 |
1.47 |
(production * nut content) |
|
OUT2 |
1.53 |
0.17 |
4.45 |
(50% of husk lost, put on one heap or used for soap) |
|
OUT3 |
4.15 |
0.00 |
8.83 |
(leaching formula, root depth = 0.7) |
|
OUT4 |
1.39 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
1.73 |
0.23 |
0.14 |
(1 tonnes/ha erosion) |
|
Total |
-1.5 |
-0.2 |
-9.2 |
|
Cocoyam
|
Harvested area: |
3 000 |
ha |
21 000 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
4.11 |
1.22 |
1.83 |
(macrolevel) |
|
IN2 |
0.24 |
0.06 |
0.16 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
32.20 |
2.10 |
20.44 |
(production * nut content) |
|
OUT2 |
2.00 |
0.50 |
3.23 |
(production * residue removal * nut content) |
|
OUT3 |
1.96 |
0.00 |
9.17 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.94 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
12.13 |
1.61 |
0.99 |
(7 tonnes/ha erosion) |
|
Total |
-34.0 |
-1.9 |
-26.1 |
|
Fallow
|
Harvested area: |
7 300 |
ha |
0 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.00 |
0.00 |
(no mineral fertilizer) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(input of manure is equal to removal of crop residues) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
0.00 |
0.00 |
0.00 |
(no crop products) |
|
OUT2 |
0.00 |
0.00 |
0.00 |
(removal of crop residues is equal to input of manure) |
|
OUT3 |
7.84 |
0.00 |
8.83 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.39 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
0.87 |
0.11 |
0.07 |
(0.5 tonnes/ha erosion) |
|
Total |
1.8 |
0.9 |
-3.2 |
|
Maize
|
Harvested area: |
5 650 |
ha |
8 475 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
5.86 |
1.20 |
2.42 |
(macrolevel) |
|
IN2 |
0.52 |
0.13 |
0.33 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
25.20 |
6.14 |
7.13 |
(production * nut content) |
|
OUT2 |
2.18 |
0.43 |
4.82 |
(production * residue removal * nut content) |
|
OUT3 |
3.83 |
0.00 |
9.30 |
(leaching formula, root depth = 0.9) |
|
OUT4 |
2.20 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
8.66 |
1.15 |
0.70 |
(5 tonnes/ha erosion) |
|
Total |
-23.8 |
-5.4 |
-13.5 |
|
Oil-palm
|
Harvested area: |
900 |
ha |
10 800 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
1.50 |
1.13 |
2.57 |
(macrolevel) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no organic inputs) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
34.80 |
8.40 |
48.96 |
(production * nut content) |
|
OUT2 |
4.44 |
0.68 |
4.00 |
(production * residue removal * nut content) |
|
OUT3 |
0.00 |
0.00 |
9.27 |
(leaching formula, root depth = 1.0) |
|
OUT4 |
1.58 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
1.73 |
0.23 |
0.14 |
(1 tonnes/ha erosion) |
|
Total |
-29.2 |
-7.2 |
-54.1 |
|
Plantain
|
Harvested area: |
5 000 |
ha |
40 000 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.33 |
0.08 |
0.65 |
(macrolevel) |
|
IN2 |
0.15 |
0.04 |
0.09 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
5.60 |
0.70 |
27.36 |
(production * nut content) |
|
OUT2 |
0.96 |
0.24 |
5.14 |
(production * residue removal * nut content) |
|
OUT3 |
5.32 |
0.00 |
8.95 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.45 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
5.20 |
0.69 |
0.42 |
(3 tonnes/ha erosion) |
|
Total |
-6.2 |
-0.5 |
-35.4 |
|
Rice
|
Harvested area: |
2 112 |
ha |
2 746 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
4.07 |
1.02 |
3.00 |
(macrolevel) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no organic inputs) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
22.88 |
7.65 |
2.48 |
(sedimentation of 1 mm/year, including enrichment factor) |
|
OUT1 |
15.08 |
4.41 |
4.45 |
(production * nut content) |
|
OUT2 |
1.47 |
0.30 |
4.65 |
(production * residue removal * nut content) |
|
OUT3 |
10.26 |
0.00 |
9.34 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.90 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
0.00 |
0.00 |
0.00 |
(no erosion, rice only in lowlands) |
|
Total |
10.1 |
5.0 |
-7.3 |
|
Vegetables
|
Harvested area: |
250 |
ha |
1 500 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
4.25 |
0.76 |
2.08 |
(macrolevel) |
|
IN2 |
5.88 |
1.52 |
3.74 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
54.00 |
5.46 |
15.48 |
(production * nut content) |
|
OUT2 |
5.76 |
2.50 |
14.09 |
(production * residue removal * nut content) |
|
OUT3 |
0.00 |
0.00 |
9.83 |
(leaching formula, root depth = 0.4) |
|
OUT4 |
2.68 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
17.33 |
2.30 |
1.41 |
(10 tonnes/ha erosion) |
|
Total |
-57.8 |
-7.0 |
-29.3 |
|
Yam
|
Harvested area: |
1 500 |
ha |
27 000 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
4.11 |
1.22 |
1.83 |
(macrolevel) |
|
IN2 |
0.24 |
0.06 |
0.16 |
((available manure * loss * factor) / harvested area) |
|
IN3 |
7.53 |
1.00 |
5.71 |
(macrolevel) |
|
IN4 |
4.33 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
82.80 |
5.40 |
52.56 |
(production * nut content) |
|
OUT2 |
5.13 |
1.30 |
8.32 |
(production * residue removal * nut content) |
|
OUT3 |
0.00 |
0.00 |
9.17 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.94 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
12.13 |
1.61 |
0.99 |
(7 tonnes/ha erosion) |
|
Total |
-85.8 |
-6.0 |
-63.3 |
|
KENYA, EMBU DISTRICT
Arrow roots
|
Harvested area: |
260 |
ha |
894 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.00 |
0.00 |
(No mineral fertilizer) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no manure) |
|
IN3 |
6.83 |
0.88 |
3.68 |
(derived from rainfall) |
|
IN4 |
4.24 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
23.80 |
7.00 |
42.00 |
(production * nut content) |
|
OUT2 |
2.66 |
0.70 |
4.34 |
(production * nut content * residue removal [20%]) |
|
OUT3 |
35.15 |
0.00 |
4.36 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.51 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
0.00 |
0.00 |
0.00 |
(0 tonnes/ha erosion, grown in valley) |
|
Total |
-52.1 |
-6.8 |
-47.0 |
|
Beans
|
Harvested area: |
2 748 |
ha |
1 240 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
5.70 |
5.60 |
0.00 |
(Staverman, 2003) |
|
IN2 |
0.94 |
0.19 |
0.82 |
(2% of available manure) |
|
IN3 |
6.83 |
0.88 |
3.68 |
(derived from rainfall) |
|
IN4 |
16.01 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
16.70 |
1.31 |
10.56 |
(production * nut content) |
|
OUT2 |
4.55 |
0.44 |
5.73 |
(production * nut content * residue removal [97%]) |
|
OUT3 |
44.83 |
0.00 |
4.50 |
(leaching formula, root depth = 0.6) |
|
OUT4 |
2.36 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
103.04 |
30.80 |
7.49 |
(7 tonnes/ha erosion) |
|
Total |
-142.0 |
-25.9 |
-23.8 |
|
Cassava
|
Harvested area: |
515 |
ha |
5 280 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.00 |
0.00 |
(No mineral fertilizer) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no manure) |
|
IN3 |
6.83 |
0.88 |
3.68 |
(derived from rainfall) |
|
IN4 |
4.24 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
127.13 |
7.18 |
82.02 |
(production * nut content) |
|
OUT2 |
9.43 |
1.85 |
2.87 |
(production * nut content * residue removal [20%]) |
|
OUT3 |
10.88 |
0.00 |
4.36 |
(leaching formula, root depth = 0.6) |
|
OUT4 |
1.51 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
147.20 |
44.00 |
10.70 |
(10 tonnes/ha erosion) |
|
Total |
-285.1 |
-52.1 |
-96.3 |
|
Coffee
|
Harvested area: |
8 813 |
ha |
12 800 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
59.10 |
13.20 |
0.00 |
(Staverman, 2003) |
|
IN2 |
5.28 |
1.06 |
4.59 |
(36% of available manure) |
|
IN3 |
6.83 |
0.88 |
3.68 |
(derived from rainfall) |
|
IN4 |
4.24 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
4.80 |
0.32 |
4.00 |
(production * nut content) |
|
OUT2 |
0.52 |
0.46 |
1.12 |
(production * nut content * residue removal [15%]) |
|
OUT3 |
25.95 |
0.00 |
5.15 |
(leaching formula, root depth = 0.9) |
|
OUT4 |
9.70 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
73.60 |
22.00 |
5.35 |
(5 tonnes/ha erosion) |
|
Total |
-39.1 |
-7.6 |
-7.3 |
|
Cowpea
|
Harvested area: |
280 |
ha |
410 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
40.00 |
0.00 |
(recommended amount) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no manure) |
|
IN3 |
5.86 |
0.76 |
3.16 |
(derived from rainfall) |
|
IN4 |
24.38 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
25.38 |
1.80 |
14.40 |
(production * nut content) |
|
OUT2 |
11.06 |
0.64 |
6.40 |
(production * nut content * residue removal [97%]) |
|
OUT3 |
29.32 |
0.00 |
2.02 |
(leaching formula, root depth = 0.6) |
|
OUT4 |
1.32 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
70.84 |
30.80 |
6.90 |
(7 tonnes/ha erosion) |
|
Total |
-107.7 |
7.5 |
-26.6 |
|
Fallow
|
Harvested area: |
1 800 |
ha |
18 000 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.00 |
0.00 |
(Staverman, 2003) |
|
IN2 |
3.23 |
0.65 |
2.81 |
(4.5% of available manure) |
|
IN3 |
6.83 |
0.88 |
3.68 |
(derived from rainfall) |
|
IN4 |
4.24 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
0.00 |
0.00 |
0.00 |
(no crop products) |
|
OUT2 |
2.04 |
0.26 |
2.21 |
(production * nut content * residue removal [5%]) |
|
OUT3 |
27.61 |
0.00 |
4.84 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.92 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
7.36 |
2.20 |
0.53 |
(0.5 tonnes/ha erosion) |
|
Total |
-24.6 |
-0.9 |
-1.1 |
|
Maize
|
Harvested area: |
5 143 |
ha |
10 452 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
18.10 |
8.10 |
1.80 |
(Staverman, 2003) |
|
IN2 |
12.82 |
2.57 |
11.14 |
(51% of available manure) |
|
IN3 |
6.83 |
0.88 |
3.68 |
(derived from rainfall) |
|
IN4 |
4.24 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
40.65 |
3.86 |
33.13 |
(production * nut content) |
|
OUT2 |
18.73 |
3.67 |
41.32 |
(production * nut content * residue removal [95%]) |
|
OUT3 |
33.57 |
0.00 |
6.59 |
(leaching formula, root depth = 0.9) |
|
OUT4 |
5.45 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
117.76 |
35.20 |
8.56 |
(8 tonnes/ha erosion) |
|
Total |
-174.2 |
-31.2 |
-73.0 |
|
Napier
|
Harvested area: |
602 |
ha |
21 076 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
32.90 |
6.00 |
0.00 |
(Staverman, 2003) |
|
IN2 |
10.74 |
2.15 |
9.33 |
(5% of available manure) |
|
IN3 |
6.83 |
0.88 |
3.68 |
(derived from rainfall) |
|
IN4 |
4.24 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
136.50 |
14.00 |
182.00 |
(production * nut content) |
|
OUT2 |
0.00 |
0.00 |
0.00 |
(residue is crop products) |
|
OUT3 |
21.75 |
0.00 |
5.97 |
(leaching formula, root depth = 0.9) |
|
OUT4 |
7.07 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
58.88 |
17.60 |
4.28 |
(4 tonnes/ha erosion) |
|
Total |
-169.5 |
-22.6 |
-179.2 |
|
Potatoes
|
Harvested area: |
678 |
ha |
4 130 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
45.00 |
50.00 |
0.00 |
(Min. of Agriculture and GTZ, 1998) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no manure) |
|
IN3 |
8.54 |
1.10 |
4.60 |
(derived from rainfall) |
|
IN4 |
4.68 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
41.42 |
3.05 |
37.16 |
(production * nut content) |
|
OUT2 |
2.80 |
0.85 |
5.48 |
(production * nut content * residue removal [20%]) |
|
OUT3 |
99.51 |
0.00 |
5.98 |
(leaching formula, root depth = 0.4) |
|
OUT4 |
7.63 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
51.75 |
13.93 |
1.29 |
(3 tonnes/ha erosion) |
|
Total |
-144.9 |
33.3 |
-45.3 |
|
Sorghum
|
Harvested area: |
207 |
ha |
189 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
10.00 |
4.35 |
0.00 |
(recommended amount) |
|
IN2 |
6.25 |
1.25 |
5.43 |
(1% of available manure) |
|
IN3 |
5.86 |
0.76 |
3.16 |
(derived from rainfall) |
|
IN4 |
3.96 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
13.60 |
1.83 |
5.84 |
(production * nut content) |
|
OUT2 |
8.38 |
3.57 |
22.66 |
(production * nut content * residue removal [85%]) |
|
OUT3 |
24.24 |
0.00 |
2.96 |
(leaching formula, root depth = 1.0) |
|
OUT4 |
3.39 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
80.96 |
35.20 |
7.88 |
(8 tonnes/ha erosion) |
|
Total |
-104.5 |
-34.2 |
-30.8 |
|
Sweet potatoes
|
Harvested area: |
140 |
ha |
1 341 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
17.00 |
7.39 |
14.17 |
(recommended amount) |
|
IN2 |
4.62 |
0.93 |
4.01 |
(0.5% of available manure) |
|
IN3 |
6.83 |
0.88 |
3.68 |
(derived from rainfall) |
|
IN4 |
4.24 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
90.04 |
8.62 |
70.88 |
(production * nut content) |
|
OUT2 |
19.11 |
10.92 |
30.03 |
(production * nut content * residue removal [95%]) |
|
OUT3 |
23.52 |
0.00 |
7.50 |
(leaching formula, root depth = 1.0) |
|
OUT4 |
4.26 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
73.60 |
22.00 |
5.35 |
(5 tonnes/ha erosion) |
|
Total |
-177.8 |
-32.3 |
-91.9 |
|
Tea
|
Harvested area: |
1 092 |
ha |
9 600 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
33.75 |
2.93 |
5.63 |
(recommended amount) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(no manure) |
|
IN3 |
8.54 |
1.10 |
4.60 |
(derived from rainfall) |
|
IN4 |
4.68 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
9.50 |
0.76 |
5.13 |
(production * nut content) |
|
OUT2 |
0.03 |
0.00 |
0.00 |
(production * nut content * residue removal [15%]) |
|
OUT3 |
30.29 |
0.00 |
6.96 |
(leaching formula, root depth = 0.9) |
|
OUT4 |
6.20 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
17.25 |
4.64 |
0.43 |
(1 tonne/ha erosion) |
|
Total |
-16.3 |
-1.4 |
-2.3 |
|
MALI, CMDT KOUTIALA REGION
Cotton
|
Harvested area: |
144 713 |
ha |
139 648 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
37.96 |
11.37 |
11.85 |
(fertilizer input, from CMDT reports) |
|
IN2 |
25.23 |
5.43 |
21.41 |
(organic fertilizer input, from CMDT reports) |
|
IN3 |
5.40 |
0.72 |
4.27 |
(macrolevel) |
|
IN4 |
3.73 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
23.16 |
2.80 |
6.27 |
(production * nut content) |
|
OUT2 |
8.08 |
0.01 |
3.65 |
(prod * nut content * residue removal (1+61% burning)) |
|
OUT3 |
38.26 |
0.00 |
9.89 |
(leaching formula, root depth = 1.0) |
|
OUT4 |
9.00 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
7.59 |
2.31 |
0.28 |
(10/ha tonne erosion) |
|
Total |
-13.8 |
12.4 |
17.4 |
|
Cowpea
|
Harvested area: |
5 637 |
ha |
2 559 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.00 |
0.00 |
(fertilizer input, from CMDT reports) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(organic fertilizer input, from CMDT reports) |
|
IN3 |
5.40 |
0.72 |
4.27 |
(macrolevel) |
|
IN4 |
14.86 |
0.00 |
0.00 |
(non-symbiotic + 55% of N fixed) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
11.62 |
1.36 |
0.32 |
(production * nut content) |
|
OUT2 |
8.63 |
0.50 |
4.99 |
(production * nut content * residue removal (100%)) |
|
OUT3 |
5.22 |
0.00 |
4.14 |
(leaching formula, root depth = 0.6) |
|
OUT4 |
0.96 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
5.31 |
1.62 |
0.20 |
(7 tonnes/ha erosion) |
|
Total |
-11.5 |
-2.8 |
-5.4 |
|
Fallow
|
Harvested area: |
227 200 |
ha |
0 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.00 |
0.00 |
(no mineral fertilizer) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(input of manure is equal to removal of crop residues) |
|
IN3 |
5.40 |
0.72 |
4.27 |
(macrolevel) |
|
IN4 |
3.73 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
0.00 |
0.00 |
0.00 |
(no crop products) |
|
OUT2 |
0.00 |
0.00 |
0.00 |
(removal of crop residues is equal to input of manure) |
|
OUT3 |
10.72 |
0.00 |
4.14 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
0.96 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
0.38 |
0.12 |
0.01 |
(0.5 tonnes/ha erosion) |
|
Total |
-2.94 |
0.6 |
0.1 |
|
Groundnut
|
Harvested area: |
13 411 |
ha |
7 564 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
0.00 |
0.00 |
0.00 |
(fertilizer input, from CMDT reports) |
|
IN2 |
0.00 |
0.00 |
0.00 |
(organic fertilizer input, from CMDT reports) |
|
IN3 |
5.40 |
0.72 |
4.27 |
(macrolevel) |
|
IN4 |
19.86 |
0.00 |
0.00 |
(non-symbiotic = 65% of N fixed) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
18.84 |
0.96 |
3.95 |
(production * nut content) |
|
OUT2 |
4.84 |
0.46 |
6.40 |
(production * nut content * residue removal (81%)) |
|
OUT3 |
0.00 |
0.00 |
4.14 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
0.96 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
7.59 |
2.31 |
0.28 |
(10 tonnes/ha erosion) |
|
Total |
-7.0 |
-3.0 |
-10.5 |
|
Maize
|
Harvested area: |
57 020 |
ha |
98 188 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
27.12 |
3.88 |
6.34 |
(fertilizer input, from CMDT reports) |
|
IN2 |
7.18 |
1.54 |
6.09 |
(organic fertilizer input, from CMDT reports) |
|
IN3 |
5.40 |
0.72 |
4.27 |
(macrolevel) |
|
IN4 |
3.73 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
23.59 |
3.79 |
3.62 |
(production * nut content) |
|
OUT2 |
16.39 |
2.07 |
25.76 |
(production * nut content * residue removal [80%]) |
|
OUT3 |
20.27 |
0.00 |
6.29 |
(leaching formula, root depth = 0.9) |
|
OUT4 |
5.32 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
3.80 |
1.16 |
0.14 |
(5 tonnes/ha erosion) |
|
Total |
-25.9 |
-0.9 |
-19.1 |
|
Millet
|
Harvested area: |
101 294 |
ha |
87 012 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
5.38 |
0.72 |
1.37 |
(fertilizer input, from CMDT reports) |
|
IN2 |
0.35 |
0.07 |
0.29 |
(organic fertilizer input, from CMDT reports) |
|
IN3 |
5.40 |
0.72 |
4.27 |
(macrolevel) |
|
IN4 |
3.73 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
16.49 |
5.12 |
4.66 |
(production * nut content) |
|
OUT2 |
9.51 |
0.94 |
20.55 |
(production * nut content * residue removal (52%)) |
|
OUT3 |
3.80 |
0.00 |
4.43 |
(leaching formula, root depth = 1.0) |
|
OUT4 |
1.68 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
3.80 |
1.16 |
0.14 |
(5 tonnes/ha erosion) |
|
Total |
-20.4 |
-5.7 |
-23.8 |
|
Rice
|
Harvested area: |
5 569 |
ha |
6 850 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
5.48 |
0.52 |
1.00 |
(fertilizer input, from CMDT reports) |
|
IN2 |
0.04 |
0.01 |
0.03 |
(organic fertilizer input, from CMDT reports) |
|
IN3 |
5.40 |
0.72 |
4.27 |
(macrolevel) |
|
IN4 |
3.73 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
11.76 |
4.77 |
0.58 |
(rice in valleys, 1 mm sedimentation per year) |
|
OUT1 |
14.27 |
4.18 |
4.18 |
(production * nut content) |
|
OUT2 |
4.86 |
0.99 |
15.41 |
(production * nut content * residue removal (35%)) |
|
OUT3 |
9.98 |
0.00 |
4.32 |
(leaching formula, root depth = 0.5) |
|
OUT4 |
1.66 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
0.00 |
0.00 |
0.00 |
(no erosion, rice is grown in valleys) |
|
Total |
-4.4 |
0.8 |
-18.0 |
|
Sorghum
|
Harvested area: |
130 254 |
ha |
128 691 |
tonnes production |
| |
N |
P |
K |
|
|
(kg/ha) |
||||
|
IN1 |
3.53 |
0.60 |
1.10 |
(fertilizer input, from CMDT reports) |
|
IN2 |
0.05 |
0.01 |
0.04 |
(organic fertilizer input, from CMDT reports) |
|
IN3 |
5.40 |
0.72 |
4.27 |
(macrolevel) |
|
IN4 |
3.73 |
0.00 |
0.00 |
(only non-symbiotic) |
|
IN5 |
0.00 |
0.00 |
0.00 |
(not relevant) |
|
OUT1 |
16.80 |
1.98 |
2.96 |
(production * nut content) |
|
OUT2 |
4.18 |
0.25 |
23.18 |
(production * nut content * residue removal (51%)) |
|
OUT3 |
2.13 |
0.00 |
4.33 |
(leaching formula, root depth = 1.0) |
|
OUT4 |
1.41 |
0.00 |
0.00 |
(regression model) |
|
OUT5 |
3.80 |
1.16 |
0.14 |
(5 tonnes/ha erosion) |
|
Total |
-15.6 |
-2.1 |
-25.2 |
|
