Consider the following statements:
1. Sodic soils in Punjab have a sodium content of more than 15% and a pH above 8.5, making them strongly alkaline.
2. Saline soils in southwestern Punjab are primarily due to high rainfall and excessive groundwater recharge.
Select the correct code:
1
1 only
2
2 only
3
Both 1 and 2
4
Neither 1 nor 2