Research Article

Tillage System Affects Soil Organic Carbon Storage and Quality in Central Morocco

Table 2

Soil organic carbon storage (SOCs) (Mg·ha−1) in three sites under no tillage (NT) and conventional tillage (CT) in Merchouch, Morocco.

Depth (cm)VertisolCambisolLuvisolAverage
NT CT NT CT NT CT NT CT

0–5 5.39a4.14b4.91a4.07b4.02a3.31b4.77a3.84b
5–10 5.83a4.62b5.70a4.63b5.09a4.69b5.54a4.65b
10–20 11.32a10.77b10.35a9.81b8.54a8.61a10.07a9.73a
20–30 9.34a9.26a9.80a9.98a7.77a8.18a8.97a9.14a

Total (0–30 cm)31.89a28.79b30.76a28.49b25.41a24.79a29.35a27.35b

a,bFor the same soil and the same depth, treatments with the same letter are not significantly different; Student’s t-test ().