Potassium Levels, Sources and Time of Application on Nutrient Uptake and Nutrient Use Efficiency of Onion (Allium cepa L.)

Kumara, B R and Mansur, C P and Meti, S and Jagadeesh, S L and Chander, G and Wani, S P and Mesta, R K and Satish, D and Allolli, T B and Reddy, S (2018) Potassium Levels, Sources and Time of Application on Nutrient Uptake and Nutrient Use Efficiency of Onion (Allium cepa L.). International Journal of Current Microbiology and Applied Sciences, 7 (7). pp. 4214-4225. ISSN 23197692

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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%).

Item Type: Article
Divisions: Research Program : Asia
CRP: UNSPECIFIED
Uncontrolled Keywords: Onion, Nitrogen, Phosphorus, Potassium, Zinc, Uptake and use efficiency
Subjects: Others > Soil Fertility
Others > Soil Science
Depositing User: Mr Ramesh K
Date Deposited: 27 Aug 2018 09:56
Last Modified: 27 Aug 2018 09:56
URI: http://oar.icrisat.org/id/eprint/10843
Official URL: http://dx.doi.org/10.20546/ijcmas.2018.707.493
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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