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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology


Damage and Control of Panicle Insect Pests of Sorghum (Sorghum Bicolor (L) Moench) In the North Eastern Nigeria

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Author Malgwi, A.M, Dunuwel, D.M.
ISSN 2225-7217
On Pages 195-202
Volume No. 3
Issue No. 2
Issue Date March 01, 2013
Publishing Date March 01, 2013
Keywords Discolouration, Panicle Pests, Moldiness, Floaters, Damage, Grain Yield



Abstract

Damage and control of panicle insect pests was studied on eight sorghum varieties/cultivars in field trials conducted at Yola and Kaltungo in 2011 cropping season in the North Eastern Nigeria. The experiment was laid out in a Split-Plot Design (SPD) replicated three times on 12m2 plots. The eight sorghum varieties/cultivars were the sub-plot, while treated with carbofuran; protected with muslin cloth and untreated were the main plots. Five damage parameters were taken into account at sorghum maturity: discoloration and punctures; moldiness; germination test; floaters and grain yield. SAMSORG-17 had the highest grain discoloration and punctures (7.3) and Ex-Tula Red cultivar was the least (4.17). Moldiness was high on Tiksha-Mamza (Ex-Garkida) (10.50) and least on Ex-Tula Red cultivar (3.50). Ex-Tula Farafara cultivar had the highest percentage germination (92.82%) and SAMSORG-41 had the lowest (78.67%). Percentage floaters were highest on Tiksha-Mamza (Ex-Garkida) (9.83%) with lowest on Ex-Tula Farafara cultivar (1.33%). When carbofuran was applied there was no significant difference between the treatments in number of leaves and plant height in both locations. In grain yield, the treated plots yielded 2,669.93 kgha-1 at Yola and Kaltungo 1740.68 kgha-1. The natural infested plots yield was 1988.25 kgha-1 at Yola and Kaltungo 1574.88 kgha-1. The percentage yield loss for the treated plots with carbofuran at Yola, Ex-Tula Farafara cultivar had the highest(43.24%) and SAMSORG-41 was the least (4.12%) compared with protected with cages. The use of carbofuran applied in the whorls of sorghum gave more grain yield than the protected and the untreated plots. Therefore, carbofuran remains a good and effective insecticide against panicle insect pests of sorghum.


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