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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 (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

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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.2018.7(6): 907-915
DOI: https://doi.org/10.20546/ijcmas.2018.706.107


Influence of Composted Municipal Sludge on Efficiency of Primary Nutrients in Maize (Zea mays L.) under Temperate Himalayas
M. Auyoub Bhat, J.A. Wani and Sandeep Kumar
Division of Soil Science, S.K. University of Agricultural Sciences & Technology of Kashmir, Srinagar, Jammu & Kashmir 191121, India
*Corresponding author
Abstract:

Field experiments were conducted at the Agricultural Research Farm of Krishi Vigyan Kendra, SKUAST-K, Shuhama, Srinagar to study the effect of composted municipal sludge application on efficiency of primary nutrients viz. nitrogen, phosphorus and potassium in maize (Zea mays L.). Application of 75% NPK + sludge @ 30 t ha-1 resulted in highest yields and nutrient uptake by the crop followed by NPK + sludge @ 15 t ha-1, 75% NPK + sludge @ 15 t ha-1 and 50% NPK + 30 sludge @ 30 t ha-1. These were statistically identical to each other for seed and stover yields. Highest agronomic efficiency of nitrogen, phosphorus and potassium was observed in 50% NPK + Sludge @ 30 t ha-1 followed by 50% NPK + Sludge @ 15 t ha-1, 75% NPK + Sludge @ 30 t ha-1, 75% NPK + Sludge @ 15 t ha-1, NPK + Sludge @ 15 t ha-1 and NPK. Recovery efficiency of nitrogen, phosphorus and potassium was maximum in 75% NPK + Sludge @ 30 t ha-1 followed by NPK + Sludge @ 15 t ha-1, 75% NPK + Sludge @ 15 t ha-1, 50% NPK + Sludge @ 30 t ha-1, NPK and 50% NPK + Sludge @ 15 t ha-1. Highest physiological efficiency of nitrogen, phosphorus and potassium was recorded in 50% NPK + Sludge @ 15 t ha-1 followed by NPK, 50% NPK + Sludge @ 30 t ha-1 and 75% NPK + Sludge @ 15 t ha-1. Highest economic efficiency of nitrogen, phosphorus and potassium was registered with 50% NPK + Sludge @ 30 t ha-1 followed by 50% NPK + Sludge @ 15 t ha-1, 75% NPK + Sludge @ 30 t ha-1, 75% NPK + Sludge @ 15 t ha-1, 75% NPK + Sludge @ 15 t ha-1, NPK + Sludge @ 15 t ha-1 and NPK. The results clearly indicated that use of composted sludge could increase the efficiency of primary nutrients and decrease the requirement of NPK fertilizers by 25-50 percent under temperate Himalayas.


Keywords: Composted sludge, Economic efficiency, Agronomic efficiency, Recovery efficiency, Chemical fertilizers
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How to cite this article:

Auyoub Bhat, M., J.A. Wani and Sandeep Kumar. 2018. Influence of Composted Municipal Sludge on Efficiency of Primary Nutrients in Maize (Zea mays L.) under Temperate Himalayas.Int.J.Curr.Microbiol.App.Sci. 7(6): 907-915. doi: https://doi.org/10.20546/ijcmas.2018.706.107