Journal of
Dryland Agriculture

OFFICIAL PUBLICATION OF THE CENTRE FOR DRYLAND AGRICULTURE, BAYERO UNIVERSITY, KANO
  • Abbreviation: J. Dryland Agric.
  • Language: English
  • ISSN: 2476-8650
  • DOI: 10.5897/JODA
  • Start Year: 2015
  • Published Articles: 22

Full Length Research Paper

Effect of Phosphorus Levels on Growth and Yield of Cowpea (Vigna unguiculata (L.) Walp.) in Zaria, Nigeria

Namakka A.
  • Namakka A.
  • Samaru College of Agriculture, Division of Agricultural Colleges, Ahmadu Bello University, Zaria , Kaduna State, Nigeria
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Jibrin D.M.
  • Jibrin D.M.
  • Samaru College of Agriculture, Division of Agricultural Colleges, Ahmadu Bello University, Zaria , Kaduna State, Nigeria
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Hamma I.L.
  • Hamma I.L.
  • Samaru College of Agriculture, Division of Agricultural Colleges, Ahmadu Bello University, Zaria , Kaduna State, Nigeria
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Bulus J.
  • Bulus J.
  • Department of Crop Protection, Faculty of Agriculture Institute for Agricultural Research, Ahmadu Bello University, Zaria Kaduna State Nigeria
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  • Article Number - 5E5608B58358
  • Vol.3(1), pp. 85-93, December 2017
  •  Received: 01 November 2017
  •  Published: 01 December 2017

Abstract

Phosphorus is critical to cowpea yield because it stimulates growth, initiate nodules formation as well as influencing the efficiency of rhizobium-Legume symbiosis. In Nigeria, legumes receive little form of mineral phosphorus fertilizer as they accordingly depend on the natural soil available phosphorus for growth and yield which results to low yield. It was due to this problem that field trials were conducted at the Research Field of Horticultural section of Samaru College of Agriculture, Ahmadu Bello University, Zaria, Nigeria during 2015 and 2016 wet seasons to investigate the effect of phosphorus levels on the growth and yield of cowpea (SAMPEA 17). The treatments consisted of five levels of phosphorus (0, 10, 19, 29 and 39 kgPha-1) in the form of single superphosphate laid out in randomized complete block design (RCBD) and replicated four times. The results showed that application of 39 kgPha-1 resulted to highest growth in terms of plant height, number of branches per plant, leaf area index and yield. This rate is therefore recommended for enhancing growth and yield of the cowpea.
 
Keywords: Cowpea, Phosphorus, Growth, Yield