How much K plants need
Recommendations on the
application of fertiliser depend
on many factors: crop yields, crop
composition, irrigation system and soil fertility.
To check how many nutrients there are in the soil, farmers need to regularly send soil samples to the laboratory for agrochemical testing. Fertiliser application plans are based on the examination results.
The following table shows the average constitutions for some crops, recommended by the International Potash Institute (IPI).
General recommendations
on the use of fertiliser for different crops
Average fertiliser application recommendations
Recommended application (kg/ha)
|
|
|
|
|
|
|
Rice |
Wheat |
Corn |
Peanut |
Potato |
N |
120 |
120 |
120 |
30 |
150 |
P2O5 |
60 |
60 |
60 |
40 |
60 |
K2O |
60 |
60 |
60 |
40 |
150 |