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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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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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.2018.7(7): 4214-4225
DOI: https://doi.org/10.20546/ijcmas.2018.707.493


Potassium Levels, Sources and Time of Application on Nutrient Uptake and Nutrient Use Efficiency of Onion (Allium cepa L.)
B. R. Kumara1*, C. P. Mansur1, Shankar Meti1, S. L. Jagadeesh1, Girish Chander2
S. P. Wani2, R. K. Mesta1, D. Satish1, T. B. Allolli1 and Sanjeev Reddy1
1Department of Horticulture, College of Horticulture, UHS, Bagalkot, Karnataka, India
2ICRISAT- International Crops Research Institute for Semi-Arid Tropics, Patancheru, Telangana, India
*Corresponding author
Abstract:

The present study on potassium levels, sources and time of application on nutrient uptake and nutrient use efficiency of onion var. ArkaKalyan was carried out at the College of Horticulture, Bagalkot, Karnataka during Kharif season of 2015 and 2016. The uptake of nitrogen, phosphorus, potassium and zinc recorded significantly in 200 per cent RDK (203.62, 47.33, 236.36 kg ha-1 and 347.19 g ha-1, respectively) over 100 per cent RDK. Among the potassium sources, SOP recorded higher nitrogen and phosphorus, potassium and zinc uptake (171.02 and 40.29, 197.73 kg ha-1 and 264.02 g ha-1 respectively) over MOP. The higher nitrogen, phosphorus, potassium and zinc uptake was recorded significantly in application of 50 per cent potassium at transplanting and 50 per cent at 30 DAT (168.52, 39.74, 195.69 kg ha-1 and 289.76 g ha-1) over 100 per cent potassium at transplanting (157.90, 37.03, 187.23 kg ha-1 and 277.73 g ha-1). Significantly higher nitrogen and phosphorus use efficiency was recorded in 200 per cent RDK (162.90 and 63.10%, respectively) over 100 per cent RDK. The higher potassium use efficiency on the contrary was recorded in 100 per cent RDK (121.18%) over 125, 150, 175 and 200 per cent RDK. Among the potassium sources, SOP recorded higher nitrogen, phosphorus and potassium use efficiency of onion plant (136.82, 53.72 and 107.89%, respectively) over MOP. The higher nitrogen, phosphorus and potassium use efficiency was recorded significantly in application of 50 per cent potassium at transplanting and 50 per cent at 30 DAT (134.82, 52.99 and 106.68%) over 100 per cent potassium at transplanting (126.31, 49.37 and 102.0%).


Keywords: Onion, Nitrogen, Phosphorus, Potassium, Zinc, Uptake and use efficiency
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How to cite this article:

Kumara B. R., C. P. Mansur, Shankar Meti, S. L. Jagadeesh, Girish Chander, S. P. Wani, R. K. Mesta, D. Satish, T. B. Allolli and Sanjeev Reddy. 2018. Potassium Levels, Sources and Time of Application on Nutrient Uptake and Nutrient Use Efficiency of Onion (Allium cepa L.).Int.J.Curr.Microbiol.App.Sci. 7(7): 4214-4225. doi: https://doi.org/10.20546/ijcmas.2018.707.493