Table 1.

Mineral N (NO₃⁻–N + NH₄⁺–N) concentration in the nutrient solution and mineral N amount applied in fertigation in the three sweet pepper crops.

	2014		2016		2017
N Treatment	N Concentration (mmol L−1)	N Amount (kg ha−1)	N Concentration (mmol L−1)	N Amount (kg ha−1)	N Concentration (mmol L−1)	N Amount (kg ha−1)
N1—Very deficient	2.4	64	2.0	88	2.0	86
N2—Deficient	6.2	189	5.3	302	5.7	304
N3—Conventional	12.6	516	9.7	561	9.7	519
N4—Excessive	16.1	804	13.5	1052	13.1	870
N5—Very excessive	20.0	990	17.7	1320	16.7	1198