Biochar induced improvement in root system architecture enhances nutrient assimilation by cotton plant seedlings

BMC Plant Biology

Table 2 Soil mineral nitrogen (NO₃⁻ and NH₄⁺) in the rhizosphere of very fine (d < 0.1 mm) and fine (0.1 < d < 2 mm) roots of Gossypium hirsutum in the different treatments when urea/biochar was applied in the 0–10 or 1–20 cm soil layer

Note: The different lowercase letters indicate significant differences between treatments with a confidence interval at P < 0.05
There are seven treatments: ck (control), sb (conventional 3.76 g urea kg⁻¹ soil applied in the 0–10 cm soil layer), bb (conventional nitrogen fertilization in the 10-20 cm soil layer), soa (urea was reduced by 25% on the basis of sb plus 37.28 g biochar kg⁻¹ soil), sob (urea was reduced by 50% on the basis of sb plus 37.28 g biochar kg⁻¹ soil), boa (urea was reduced by 25% on the basis of bb plus 37.28 g biochar kg⁻¹ soil), and bob (urea was reduced by 50% on the basis of bb with 37.28 g biochar kg⁻¹ soil). Results are presented as mean values for five plants with SE

ISSN: 1471-2229