Influence of nitrogen, chlorsulfuron and triclopyr on management of Striga hermonthica on sorghum

International Journal of Agriculture & Environmental Science

© 2017 by SSRG - IJAES Journal

Volume 4 Issue 6

Year of Publication : 2017

Authors : Rashida Abusin, Elfatih Ahmed, Amani Hamad Eltayeb, A. G. T. Babiker

10.14445/23942568/IJAES-V4I6P107

How to Cite?

Rashida Abusin, Elfatih Ahmed, Amani Hamad Eltayeb, A. G. T. Babiker, "Influence of nitrogen, chlorsulfuron and triclopyr on management of Striga hermonthica on sorghum," SSRG International Journal of Agriculture & Environmental Science, vol. 4,  no. 6, pp. 32-37, 2017. Crossref, https://doi.org/10.14445/23942568/IJAES-V4I6P107

Abstract:

 The witchweed, Striga hermonthica (Del.) Benth., is a major constraint to sorghum [Sorghum bicolor (L.) Moench] production in sub-Saharan Africa. The present investigation was undertaken at the College of Agricultural Studies, Sudan University of Science and Technology to determine the effects of nitrogen and the herbicides triclopyr, chlorsulfuron and their combinations on Striga incidence and sorghum (cv. Wad-Ahmed) growth and yield. The results showed that all treatments reduced emergence and dry weight of Striga. Chlorsulfuron at 2.38 g a.i ha-1 supplemented with nitrogen at 87.6 kg ha-1, combination between triclopyr at 0.49 kg a.e.ha-1 and nitrogen at 87.6 kg ha-1 and combination between triclopyr at 0.73 kg a.e.ha-1 and nitrogen at 43.8 kg ha-1, completely suppressed Striga emergence. Triclopyr, chlorsulfuron and their combinations caused considerable reductions in Striga dry weight (25.3-97.0%). All treatment had no effect on sorghum height. Chlorsulfuron at 2.38 g a.i ha-1 supplemented with nitrogen at two rates and triclopyr at 0.49 kg a.e. ha-1 in combination with chlorsulfuron and nitrogen at 43.8 kg ha-1 increased significantly sorghum head weight by 108.1-113.0%. The combination herbicides and nitrogen, irrespective of rates increased chlorophyll content, head volume and sorghum yield by 40.6-76.1%, 32.5-207.3% and 30.9-382.6%, respectively.

Keywords:

Striga, nitrogen, triclopyr, chlorsulfuron, sorghum, yield.

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