Table 1.

Soil properties and soil nutrient status (ammonium acetate–lactate (AL) extractable P, K and Mg) at the experimental site in 2018 and 2019.

Property	2018	2019
Clay (g kg−1)	145	145
Total N (g kg−1)	2.4	2.3
Total soil organic C (g kg−1)	25.9	24.7
pH (H2O)	5.8	5.7
P–AL (g kg−1)	0.034	0.038
K–AL (g kg−1)	0.109	0.110
Mg–AL (g kg−1)	0.194	0.201

The soil was sampled in 0–0.3 m depth after the application of fertilization, and the 5 sampling points were different in 2018 and 2019. Fertilization with 140 kg ha⁻¹ N, 24 kg ha⁻¹ P and 46 kg ha⁻¹ K was applied directly after sowing in both years. The soil organic carbon content was measured using dry combustion and infrared gas analysis (LECO).