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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.2019.8(9): 1334-1345
DOI: https://doi.org/10.20546/ijcmas.2019.809.153


Sulphur Fractionation Studies in Soils of Long Term Fertilizer Experiment under Finger Millet – Maize Cropping Sequence
K. R. Lavanya1*, G. G. Kadalli1, Siddaram Patil1, T. Jayanthi1, D. V. Naveen2 and R. Channabasavegowda1
1Department of Soil Science and Agril. Chemistry, College of Agriculture, UAS, GKVK, Bengaluru, India
2Department of Soil Science and Agril. Chemistry, College of Sericulture, UAS (B),
Chintamani, India
*Corresponding author
Abstract:

The long term field experiment has been in progress since 1986 at GKVK, Bengaluru with finger millet – hybrid maize cropping sequence. Eleven treatments were replicated four times in RCBD. The archived soil samples (1986 – 2016) from this experiment were collected at five years interval and studied for different fractions of sulphur. The fractions of sulphur were in the order of organic>residual>inorganic>water soluble> available forms. All fractions of S showed an increasing trend over 30 years of cropping cycles in all the treatments. However, the treatments which did not receive any source of sulphur decreased initially (1991) in all S fractions and then increased gradually over the years and maintained slightly higher over the initial. All forms of S were maintained significantly higher over other treatments and found on par with each other in the treatments receiving 100 % NPK + FYM + lime, 100 % NPK + FYM and in 150 % NPK. They found lower in the treatments receiving sulphur free fertilizers (DAP as P source) and imbalanced supply of nutrients. Hence, application of recommended doses of fertilizers (SSP as P source) in combination with FYM is essential in maintaining available sulphur nutrient status and soil health.


Keywords: Long term fertilizer, manuring, Sulphur Fractions,
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How to cite this article:

Lavanya, K. R., G. G. Kadalli, Siddaram Patil, T. Jayanthi, D. V. Naveen and Channabasavegowda, R. 2019. Sulphur Fractionation Studies in Soils of Long Term Fertilizer Experiment under Finger Millet – Maize Cropping Sequence.Int.J.Curr.Microbiol.App.Sci. 8(9): 1334-1345. doi: https://doi.org/10.20546/ijcmas.2019.809.153