Materials and methods:
Field response of groundnut to potassium
- 22 trials under rainfed conditions were conducted at farmers fields on
groundnut-groundnut sequence during 1997 and 1998 at Junagadh
- Rotation: GROUNDNUT in kharif - WHEAT in rabi -
GROUNDNUT in summer
- Soil: calcareous vertisols with available K between 100-700 kg
K2O ha-1
6 Treatments
| Treatment |
units |
1 |
2 |
3 |
4 |
5 |
6 |
| K |
kg K2O ha-1 |
0 |
40 |
80 |
120 |
60+60 |
0 |
| FYM |
ton ha-1 |
0 |
0 |
0 |
0 |
0 |
10 |
Kharif : N = 12.5 kg N ha-1 and P 25 kg P2O5
ha-1
Summer: N = 25 kg N ha-1 and P 50 kg P2O5 ha-1
Long term fertilization experiments
- Groundnut-wheat sequence for 12 years
- Groundnut-wheat-sorghum sequence for 20 years
- Groundnut-pearl millet sequence for 3 years
4 Treatments: Control, N, NP and NPK
| Doses |
units |
|
Groundnut |
Wheat |
|
Groundnut |
Wheat |
Sorghum |
|
Groundnut |
Pearl Millet |
| N |
kg N ha-1 |
25 |
120 |
25 |
120 |
80 |
25 |
40 |
| P |
kg P2O5 ha-1 |
50 |
60 |
50 |
60 |
40 |
50 |
80 |
| K |
kg K2O ha-1 |
80 |
60 |
50 |
50 |
50 |
80 |
0 |
<< back | home
| next >>