Soil nutrient dynamics and microbial activity as influenced by fertility levels and liquid biofertilizers in gobhi sarson (Brassica napus L.)

SOIL NUTRIENT DYNAMICS AND MICROBIAL ACTIVITY IN GOBHI SARSON


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Authors

  • VED PRAJAPATI Rajasthan College of Agriculture, MPUAT, Udaipur-313 001, Rajasthan
  • B S MANKOTIA CSKHPKVShivalik AgriculturalResearch&ExtensionCentre,Kangra-176 001,Himachal Pradesh
  • SANDEEP MANUJA Department of Agronomy & Department of Soil Science, College of Agriculture, CSKHPKV, Palampur-176 062, Himachal Pradesh
  • NAVEEN DATT Department of Soil Science, College of Agriculture, CSKHPKV, Palampur-176 062, Himachal Pradesh
  • P HALESHA Department of Agronomy, Institute of Agricultural Science, Banaras Hindu University, Varanasi-221 005, Uttar Pradesh

https://doi.org/10.56739/xw2d5p37

Keywords:

Azotobacter, Biofertilizers, Gobhi sarson, Microbial activity, Nutrient dynamics

Abstract

The experiment was conducted during winter (rabi) season of 2022-23 at CSKHPKV Shivalik Agricultural Research and Extension Centre (SAREC), Kangra, Himachal Pradesh to study the effect of fertility levels and liquid biofertilizers on soil nutrient status and microbial activity in gobhi sarson (Brassica napus L.). The experiment was laid out in a split plot design with three fertility levels (control, 75% of recommended dose of fertilizers and 100% RDF) in main plots and six liquid biofertilizers [Azotobacter, phosphate solubilizing microorganism (PSMO), potassium mobilizing biofertilizer (KMB), NPK consortia + zinc solubilizing biofertilizer (ZSB), ZSB and control (no biofertilizer)] in sub plots. The results demonstrated that application of 100% RDF recorded higher available N (277 kg/ha), P (20.8 kg/ha) and soil microbial population of bacteria, fungi and actinomycetes. However, 75% RDF recorded higher available K (225.1 kg/ha) and higher DTPA extractable Zn (2.76 mg/ha) were recorded in control treatment. Among liquid biofertilizers, higher available nitrogen, phosphorus, potassium and DTPA extractable zinc in soil was recorded with Azotobacter, PSMO, KMB and ZSB treatments, respectively. Similarly, higher microbial population was recorded with Azotobacter. However, the effect of fertility levels and liquid biofertilizers on soil organic carbon was not significant.

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Submitted

2025-08-22

Published

2024-12-30

How to Cite

VED PRAJAPATI, B S MANKOTIA, SANDEEP MANUJA, NAVEEN DATT, & P HALESHA. (2024). Soil nutrient dynamics and microbial activity as influenced by fertility levels and liquid biofertilizers in gobhi sarson (Brassica napus L.): SOIL NUTRIENT DYNAMICS AND MICROBIAL ACTIVITY IN GOBHI SARSON. Journal of Oilseeds Research, 41(3 & 4), :157-160. https://doi.org/10.56739/xw2d5p37