Table 13.

Net present value of date palm cultivation in million USD for Tubas District under various discount rates (3, 5, 10%) and salinity levels (2.00, 6.19 (average), 7.00 and 10.00) and accounting for land suitability

Salinity (dS/m)	Discount rate (%)
	3		5		10
	NPV	BCR	NPV	BCR	NPV	BCR
2.00	− 9	0.77	− 7	0.75	− 4	0.67
6.19	− 13	0.65	− 10	0.63	− 6	0.56
7.00	− 19	0.49	− 14	0.48	− 8	0.42
10.00	− 27	0.30	− 19	0.29	− 10	0.25