Effect of Inorganic and Integrated Long-term Nutrient Management on DTPA-extractable Micronutrients in a Vertisol under Soybean-wheat Cropping System across the Soil Depth

Vivek Singh *

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, India.

Hitendra K. Rai

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, India.

Priyanka Jain

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, India.

B. S. Dwivedi

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, India.

A. K. Upadhyay

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, India.

S. B. Agrawal

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, India.

Sanjib Kumar Behera

ICAR-Indian Institute of Soil Science, Bhopal, India.

R. B. Singh

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, India.

*Author to whom correspondence should be addressed.


Abstract

The status of DTPA extractable micronutrient (Zn, Cu, Fe and Mn) in response of continuous application of different inorganic and organic fertilizer combination in a 48 years old ongoing long-term fertilizer experiment (AICRP-LTFE) were investigated in Vertisol at Department of Soil Science, and Agricultural Chemistry, JNKVV, Jabalpur under intensive cultivation of soybean- wheat cropping system in 2021. The treatments selected for the study were: control (T1); 100% NP(T2); 100% NPK (T3); 100% NPK+FYM (T4); 100% N(T5); 50% NPK (T6); 150% NPK (T7). Application of FYM along with balance fertilizer (100% NPK) significantly increased the micronutrients availability in soil. On contrast, Imbalance fertilization caused a lower level of micronutrients in soil even below to the critical limit in case of zinc. A decreasing trend with increase in soil depth irrespective of type of nutrient management and micronutrient type was evident in the study. Findings of the present study emphasized the application of balance fertilization along with organic sources like FYM for sustaining micronutrients availability in Vertisol under soybean-wheat cropping system.

Keywords: Balance fertilization, DTPA-extractable micronutrient, INM, LTFE, soybean-wheat, Vertisol


How to Cite

Singh, Vivek, Hitendra K. Rai, Priyanka Jain, B. S. Dwivedi, A. K. Upadhyay, S. B. Agrawal, Sanjib Kumar Behera, and R. B. Singh. 2023. “Effect of Inorganic and Integrated Long-Term Nutrient Management on DTPA-Extractable Micronutrients in a Vertisol under Soybean-Wheat Cropping System across the Soil Depth”. International Journal of Environment and Climate Change 13 (7):471-78. https://doi.org/10.9734/ijecc/2023/v13i71899.