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International Journal of Agronomy
Volume 2014 (2014), Article ID 841238, 4 pages
Research Article

Effect of Osmopriming Duration on Germination, Emergence, and Early Growth of Cowpea (Vigna unguiculata (L.) Walp.) in the Sudan Savanna of Nigeria

1School of Biosciences, Faculty of Science, The University of Nottingham, Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor, Malaysia
2Department of Crop Science, Usmanu Danfodiyo University, Sokoto, PMB 2346, Sokoto, Nigeria

Received 30 June 2013; Revised 31 December 2013; Accepted 14 January 2014; Published 27 February 2014

Academic Editor: Bernd Lennartz

Copyright © 2014 Ajit Singh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Seed osmopriming could be a sustainable method to increase crop establishment, uniform emergence, and growth of plant on the field. Laboratory and field studies were carried out in 2010 cropping season at Usmanu Danfodiyo University, Sokoto, to study the effect of seed osmopriming duration on the germination, emergence, and growth of cowpea seeds. Treatments consisted of three osmopriming duration (soaking in 1% KNO3 salt for 6, 8, and 10 hrs), one hydroprimed control (10 hr), and an unprimed control. These five treatments were laid out in a completely randomized design (CRD) replicated four times. The results showed that osmopriming with KNO3 for different durations was at par but was superior to unprimed treatments in terms of seed germination, emergence, plant height, and dry matter accumulation at 3 weeks after sowing. From this study, it can therefore be concluded that seeds of cowpea could be primed (both hydro and osmopriming) for increased performance. However, osmopriming with KNO3 salt (soaked in 1% KNO3 salt solution and dried before sowing) for 6 hours could result in greater seed germination and seedling height than hydropriming.