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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(2): 3477-3482
DOI: https://doi.org/10.20546/ijcmas.2018.702.414


Microbial Diversity in Various Combinations of Phosphorous Sources in Maize-Groundnut Cropping Sequence in an Alfisols of Odisha, India
Suraj Mali*, G.H. Santra, Tupaki Lokya and Jaya Prajapati
Department of Soil Science and Agricultural Chemistry, College of Agriculture, OUAT, Bhubaneswar-751003, Odisha, India
*Corresponding author
Abstract:

A field experiment was conducted with maize-groundnut cropping sequence. Rock phosphate and its combination with SSP were used as nutrient sources during Rabi 2016-17 (maize taken up in Kharif 2016). The study was carried out in the Central Farm, OUAT with the help of a field experiment laid out in Randomized Block Design with seven treatment T1 Control, T2 100% P(RP),T3 100% P(SSP), T4 75% P(RP) + 25% P(SSP), T5 50% P(RP) + 50% P(SSP), T6 25% P(RP) + 75% P(SSP) and T7 100% P(SSP) + Lime @ 0.2 LR and replicated in thrice. The soil of the experimental field was loamy acidic (pH 5.2) having Bray’s P of 15.68 kg ha-1. The different combinations with SSP were evaluated for their effectiveness in the cropping system. In addition to P applied @ 50kg P2O5 ha-1 and 40 kg P2O5 ha-1 to maize and groundnut crops respectively from various sources, N was added @ 150kgha-1 to maize and 20 kgha-1 to groundnut crop in the form of urea and K @50 and 40 kg K2O ha-1 was added to maize and groundnut crop in the form of MOP. Highest maize grain yield (5.03 t ha-1) was produced due to addition of 100%P (SSP) +Lime @ 0.2LR and highest pod yield (2.77 t ha-1) of groundnut was also due to 100%P (SSP)+Lime@0.2LR. The total heterotrophic bacteria population (c.f.u. X 104 g-1soil) was the highest in 100%P (SSP) + Lime@0.2LR in all the growth stage except flowering. Phosphorus solubilising bacteria population (c.f.u. X 104 g-1soil) were maximum at pod formation stage in 100%P(SSP)+ Lime@0.2LR and 100% P(RP) treatment but at harvest the treatment received 100%P(SSP)+ Lime @0.2LR had the highest population.


Keywords: Low grade Rock phosphate (RP), Single super phosphate (SSP), Lime@0.2LR, Lime requirement (LR), Loamy acidic soil, Maize-Groundnut crop, Urea, Murate of potash (MOP), Lime requirement (LR), Pikovskaya medium, Colony Forming Unit (c.f.u.)
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How to cite this article:

Suraj Mali, G.H. Santra, Tupaki Lokya and Jaya Prajapati. 2018. Microbial Diversity in Various Combinations of Phosphorous Sources in Maize-Groundnut Cropping Sequence in an Alfisols of Odisha, India.Int.J.Curr.Microbiol.App.Sci. 7(2): 3477-3482. doi: https://doi.org/10.20546/ijcmas.2018.702.414