Abstract
Aims: To study the effect of continuous fertilization on soil properties and soil carbon stock, in a long-term experiment under a wheat-soybean cropping system in Vertisol.
 Study Design: The experiment was laid in a Randomized block design and consisted of three replications and nine treatments.
 Place and Duration of Study: Soil samples were collected during April 2022 following the harvest of Wheat from the on-going long-term fertilizer experiment at Jawahar Nehru Krishi Viswa Vidyalaya, Jabalpur, Madhya Pradesh, India
 Methodology: The soil samples were collected from two depths (0-15 and 15-30cm) and were analyzed for properties such as pH, electrical conductivity, available N, available P and available K using standard procedures.
 Results: The results indicated that out of all the treatments continued application of 100% NPK+ Farm yard manure had a significant effect (P<0.05) on all the parameters. This treatment had the highest value for in both 0-15 and 15-30 cm: SOC%(0.79% and 0.73%), available N(319.3 kg ha-1 , 275.00), available P(40.11 kg ha-1, 37.85 kg ha-1), available K (326.33 kg ha-1, 302.9 kg ha-1).
 Conclusion: Continued application of both 100%NPK along with FYM has a significant positive impact on the build-up of nutrients in the soil. This indicates that integrated application of nutrition assures productivity soil in the long.
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