Follow
International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020]For more details click here

Login as a Reviewer

Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

See Guidelines to Authors
Current Issues

Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(2): 600-611
DOI: http://dx.doi.org/10.20546/ijcmas.2017.602.068


Impact of Combine Harvested Rice Straw Management Options on Soil Microbial Population and Straw Decomposition Rate in Succeeding Rice Field
A. Vijayaprabhakar1, S. Nalliah Durairaj2 and V.S. Reddy Kiran Kalyan3
1Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore,
Tamilnadu, 641003, India
 2Department of Agronomy, Agricultural College and Research Institute, Killikulam,Tamilnadu, 642828, India
3Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore, Tamilnadu, 641003, India
*Corresponding author
Abstract:

Field experiment was conducted at Agricultural College and Research Institute, Killikulam, Tamilnadu during October, 2014 to February, 2015 to study the effect of rice residue management options on soil microbial population and straw decomposition rate under combine harvested rice field. The experiment was laid out in Randomized Block Design and replicated thrice. The treatments comprised rice residue with and without additives [25 kg additional N ha-1 as basal, bio-mineralizer (2 kg t-1 rice residue), cow dung slurry (5%)]. The additives applied individually, in combination of two and combined application of all additives in order to find out the effect of additives on soil microbial population and decomposition rate. The various residue management options significantly influenced the soil microbial population and straw decomposition rate at various growth stages of rice crop. Among the different treatments, straw incorporated with 25 kg additional N ha-1 as basal + bio-mineralizer + cow dung slurry (T8) significantly registered the highest population of bacteria (58, 76 and 68 g-1 x 106 at TL, FL and HA), fungi (51, 70 and 59 g-1 x 104 at TL, FL and HA), and actinomycetes (58, 67 and 62 g-1 x 103 at TL, FL and HA) at all stages. In relation to that, highest decomposition rate (C: N ratio: 26.7, 20.3 and 14.4 at TL, FL and HA) also observed in that same treatment (T8). The lowest population of soil bacterial (41, 58 and 49 g-1 x 106 at TL, FL and HA), fungi (26, 43 and 22 g-1 x 104 at TL, FL and HA) and actinomycetes (34, 49 and 34 g-1 x 103 at TL, FL and HA) observed in treatment (T9), where straw removed (control). The lowest decomposition rate (C: N ratio: 48.6, 35.5 and 19.2 at TL, FL and HA) observed in the treatment (T1), where straw was incorporated without any additives.


Keywords: Residue, Microbial population,C: N ratio,Bio-mineralizer, Cow dung slurry.
Download this article as Download

How to cite this article:

Vijayaprabhakar, A., S. Nalliah Durairaj and Reddy Kiran Kalyan, V.S. 2017. Impact of Combine Harvested Rice Straw Management Options on Soil Microbial Population and Straw Decomposition Rate in Succeeding Rice Field.Int.J.Curr.Microbiol.App.Sci. 6(2): 600-611. doi: http://dx.doi.org/10.20546/ijcmas.2017.602.068