Effect of Integrated Nutrient Management on Nutrient Availability Dynamics in Laboratory-incubated Black Clay Soil

Ili Venkatesh *

Department of Soil Science and Agricultural Chemistry, College of Agriculture, PJTSAU, Rajendranagar – 500030, Telangana, India.

Krishna Chaitanya Anantha

Department of Soil Science and Agricultural Chemistry, RS & RRS, PJTSAU, Rudrur, Telangana, India.

B. Raju

Department of Soil Science and Agricultural Chemistry, Agricultural College, PJTSAU, Warangal – 506006, Telangana, India.

P. Revathi

Department of Agronomy, Water Technology Centre, PJTSAU, Rajendranagar – 500030, Telangana, India.

*Author to whom correspondence should be addressed.


Abstract

Nutrient release in different soils is a dynamic process influenced by a multitude of factors, including soil texture, structure, organic matter content, pH, microbial activity, and nutrient management practices. An incubation study was conducted to study the nutrient availability and their release at different days after incubation through nutrient management practices. The results of the study revealed that at 15 DAI, available nitrogen and its fraction, available sulphur were recorded higher in the treatment receiving soil test based NPK, at 30 DAI in the treatment with integrated application 100% RDF, FYM and biofertilizers, at 45 and 60 DAI treatment receiving 75% soil test based NPK, FYM and biofertilizers. Available phosphorus recorded content recorded higher in the treatment with integrated application 100% RDF, FYM and biofertilizers and it continued to increase upto 45 DAI and their after its content decreased slightly to 60 DAI. Similar to available phosphorus, available potassium content also recorded higher in the treatment with integrated application 100% RDF, FYM and biofertilizers and it continued to increase upto 60 DAI. Treatments receiving sole inorganic fertilizers exhibited early decline in nutrient content whereas integrated treatments maintained the nutrient availability more than the sole inorganic fertilizers applied treatments.

Keywords: Nitrogen, phosphorus, potassium, sulphur and biofertilizers


How to Cite

Venkatesh, I., Anantha, K. C., Raju, B., & Revathi, P. (2024). Effect of Integrated Nutrient Management on Nutrient Availability Dynamics in Laboratory-incubated Black Clay Soil. Journal of Experimental Agriculture International, 46(5), 293–305. https://doi.org/10.9734/jeai/2024/v46i52378

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