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A 15N tracer study to evaluate the effects of nitrogen and copper fertilization on fertilizer nitrogen efficiency in rice production


Citation

Choudhury, Abu Turab Mohammad Ali and Yusop, Mohd. Khanif (2009) A 15N tracer study to evaluate the effects of nitrogen and copper fertilization on fertilizer nitrogen efficiency in rice production. Pakistan Journal of Scientific and Industrial Research, 52 (1). pp. 53-58. ISSN 2221-6413; ESSN: 2223-2559

Abstract / Synopsis

In the study of the effects of nitrogen and copper fertilization on rice yield when four rates of N (0, 60, 120 and 180 kg N/ha) as 15N labelled urea and three rates of Cu (0, 5 and 10 kg Cu/ha) were applied, grain yield increased significantly with increasing N rates upto 120 kg N/ha. The recovery of fertilizer N was around 40% irrespective of N and Cu rates. Copper application at 10 kg/ha increased grain yield by 0.53 t/ha insignificantly. Cu content in the straw was below the critical deficiency level of 6 mg/kg. Thus higher rate of Cu fertilizer (above 10 kg/ha) in soil increase rice yield and fertilizer N efficiency if Cu is applied as basal. Alternately, Cu may be applied as foliar spray on standing crop to avoid Cu adsorption in the soil.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Publisher: Pakistan Council of Scientific and Industrial Research
Keywords: 15N tracer study; Copper; Rice; Fertilizer
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 22 Jun 2015 08:15
Last Modified: 04 Nov 2015 09:01
URI: http://psasir.upm.edu.my/id/eprint/12641
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