Hydrocyanic Acid Content Variation amongst Sorghum Cultivars Grown with Varying Seed Rates and Nitrogen Levels

Sher, A. and Ansar, Md. and Fayyaz-Ul-Hassan, - and Shabbir, G. and Malik, Md. A. (2012) Hydrocyanic Acid Content Variation amongst Sorghum Cultivars Grown with Varying Seed Rates and Nitrogen Levels. International Journal of Agriculture & Biology, 14. pp. 720-726.

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Sorghum is capable of sustaining under high temperature and minimal soil moisture. Hydrocyanic acid toxin production is a serious problem associated with sorghum forage in dry areas and could be lethal to animals if ingested in higher quantities. Hydrocyanic acid (HCN) contents in forage sorghum were studied through field experiment executed at National Agricultural Research Centre, Islamabad during 2008 and 2009. Three sorghum cultivars JS-2002, Chakwal sorghum and Local sorghum were sown in a randomized complete block design in split-split plot arrangement with three seeding rates (75, 100 & 125 kg ha-1) and three nitrogen levels (0, 60 & 120 kg N ha-1). Increased nitrogen application progressively increased HCN production irrespective of cultivar and growth stage of the crop. Application of 120 kg N ha-1 recorded about 64% higher HCN than control treatment indicating the risk of higher doses of nitrogen fertilizer to sorghum forage in dry areas. Seeding rates had variable influence on HCN production. Cultivar JS-2002 produced 23, 36 and 57% less HCN contents compared to local sorghum at pre-booting, booting and 50% heading stage, respectively. On the basis of two year‘s field study, it may be concluded that approved cultivar JS-2002 produced less HCN sown with higher seed rate and applied low doses of N fertilizer under dryland farming conditions of Pothwar is recommended for general cultivation.

Item Type: Article
Additional Information: The financial assistance by Higher Education Commission under the program “Indigenous Ph. D Fellowship Program” to 1st author to complete his doctorate degree is highly acknowledged.
Uncontrolled Keywords: Management techniques; Forage sorghum; Nitrogen levels; Seeding rate; Hydrocyanic acid; Growth stages
Author Affiliation: Department of Agronomy, PMAS-Arid Agriculture University Rawalpindi, Pakistan
Subjects: Crop Improvement
Plant Physiology and Biochemistry > Biochemistry
Divisions: Sorghum
Depositing User: Mr. SanatKumar Behera
Date Deposited: 22 Oct 2012 07:28
Last Modified: 22 Oct 2012 07:28
Official URL: http://www.fspublishers.org/ijab/search_rs.jsp?n_p...
URI: http://eprints.icrisat.ac.in/id/eprint/8479

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