Long-term Impact of Soil Test and Targeted Yield Based Nutrient Management on Vertical Variability in Carbon Fractions of a Vertisol under Rice-wheat Cropping Sequence

Aim: To study the Long-term impact of soil test and targeted yield based nutrient management on vertical variability in carbon fractions a Vertisol under rice-wheat cropping sequence.
 Place Duration Study: This research trail was conducted during rabi season 2020-21 an on-going programme AICRP STCR initiated 2008 at Research Farm Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur.
 Study Design: The has consisted six treatments practices yields rice wheat (T1: Control; T2: GRD; T3: T.Y. 50 45 q ha-1 for wheat; T4: 60 ha-1; T5: with FYM 5 t T6: ha-1) different depths (0-15, 15-30 30-45 cm) which were replicated four times randomized block design.A total 72 post- harvest samples subjected to determination across depths.
 Results: Results revealed that Carbon significantly altered by over depths. However, highest contents organic inorganic obtained T6 having target along lowest control. results showed decreased consecutive increase except less labile increased