Soil carbon, micronutrients and microbiological dynamics under cash crop-based cropping systems in semi-arid National Capital Region of India.

TC showed a highly significant positive correlation with SOC (r = 0.72; p < 0.05), DOC (r = 0.78; p < 0.05), Zn (r = 0.70; p < 0.05), Mn (r = 0.72; p < 0.05), MBC (r = 0.80; p < 0.05) and DHA (r = 0.68; p < 0.05), and also exhibited a positive correlation with soil pH (r = 0.33; p < 0.05), TIC (r = 0.55; p < 0.05), DTPA-Cu (r = 0.59; p < 0.05) and Fe (r = 0.47; p < 0.05).

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