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Research Article

Year : 2017 | Volume: 10 | Issue: 3 | Pages: 131-139

Role of effective microorganisms (EM) in waste water treatment and on the growth parameters and yield of Vigna mungo Linn. in the NDB soil
series of Thiruvarur District, Tamil Nadu, India.

Victoria1*, N. Uma Maheswari2

DOI: 10.20894/STET.116.010.003.007

Corresponding author

Victoria*

PG and Research Department of Microbiology, STET Women’s College, Sundarakkottai, Mannargudi - 614 016, Tamil Nadu,India.

  • 1. PG and Research Department of Microbiology, STET Women’s College, Sundarakkottai, Mannargudi - 614 016, Tamil Nadu,India.
  • 2. PG and Research Department of Microbiology, STET Women’s College, Sundarakkottai, Mannargudi - 614 016, Tamil Nadu,India.

Received on: 01/09/2016

Revised on: 04/01/2017

Accepted on: 04/01/2017

Published on: 15/03/2017

  • Victoria, N. Uma Maheswari (2017), Role of effective microorganisms (EM) in waste water treatment and on the growth parameters and yield of Vigna mungo Linn. in the NDB soil
    series of Thiruvarur District, Tamil Nadu, India.. Scientific Transactions in Environment and Technovation, 10(3): 131-139. doi: 110.20894/STET.116.010.003.007

Abstract

Effective microorganisms (EM) are a group of commercial biofertilizer that contains a mixture of co-existing beneficial microorganisms collected from natural environments. Predominantly it consists of species of photosynthetic and lactic acid bacteria, yeast and actinomycetes. The present study was undertaken to determine the efficiency of Effective Microorganisms (EM). EM was purchased from the office of ‘Ecopro’ Auroville, Auroshilpam, Tamilnadu, India. The waste water was collected from the STET Women’s College, Sudarakkottai, Mannargudi, Tamilnadu. The waste water parameters such as odour, pH, DO, BOD, COD, TDS, TS, TSS, nitrate and phosphate were determined before and after the treatment of wastewater, to observe the efficiency of the selected process. All the parameters showed an elevated level in the raw sewage but after treatment there was a steady reduction after 5, 10, 15 and 20 days of incubation. No reduction was observed in the level of DO. All the parameters were reduced to tolerable environmental standard. Then the EM treated waste water was utilized for testing the ability to improve the yield of the cultivation of secondary crop, Vigna mungo L. Soil samples were collected from Thiruthuraipoondi, Thiruvarur District ,Tamilnadu, India which consisted of Nedumbalam (Ndb) soil series, one of the soil series of Thiruvarur District. The experimental set up was designed randomly having EM alone (T1), Treated waste water alone (T2), EM plus Treated waste water (T3) and control (C). Among the treatments studied, T3 showed the highest growth parameters and yield of the crop plant when compared to other treatments proving the efficiency of EM and recycling of waste water.

Keywords

Vigna radiata, Effective microorganisms (EM), Secondary crop, Treatments, Sewage, Incubation.