Effects of PICS bags on insect pests of sorghum during long-term storage in Burkina Faso

Waongo, A and Traore, F and Ba, M N and Dabire-Binso, C and Murdock, L L and Baributsa, D and Sanon, A (2019) Effects of PICS bags on insect pests of sorghum during long-term storage in Burkina Faso. Journal of Stored Products Research (TSI), 83. pp. 261-266. ISSN 0022474X

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Abstract

The PICS bags, originally developed for cowpea storage, were evaluated for sorghum (Sorghum bicolor) preservation. Batches of 25 kg of sorghum grain were stored in 50 kg PICS or polypropylene (PP) bags under ambient conditions for 12 months and assessed for the presence of insect pests and their damage, seed viability and, oxygen and carbon dioxide variations. The grain was incubated for 35 days to assess whether any insects would emerge. After six months of storage, oxygen levels decreased in the PICS bags compared to polypropylene bags. After 12 months of storage, only two pests, Rhyzopertha dominica and Sitophilus zeamais were found in the PICS bags. However, in PP bags there were additional pests including Tribolium castaneum and Oryzeaphilus mercator and Xylocoris flavipes. Grain weight loss and damage caused by these insects in the PP bags were significantly higher compared to those stored in PICS bags. Germination rates of sorghum grains stored in PP bags decreased significantly while no changes were observed in grains stored in PICS bags when compared to the initial germination. After the incubation post storage period, there was a resurgence of R. dominica in sorghum grains from PICS bags but the population levels were significantly lower compared to polypropylene bags. PICS bags preserved the quality and viability of stored sorghum grains and protected it from key insect pests. The PICS technology is effective for long-term sorghum storage but the potential resurgence of insects in low-oxygen environment calls for further research.

Item Type:	Article
Divisions:	Research Program : West & Central Africa
CRP:	UNSPECIFIED
Uncontrolled Keywords:	PICS bags, Sorghum, Rhyzopertha dominica, Long term storage, Resurgence
Subjects:	Others > Burkina Faso Others > Cereals Others > Pest Management Mandate crops > Sorghum Others > Germplasm Others > Seed Systems
Depositing User:	Mr Arun S
Date Deposited:	03 Oct 2019 05:17
Last Modified:	03 Oct 2019 05:24
URI:	http://oar.icrisat.org/id/eprint/11318
Official URL:	https://doi.org/10.1016/j.jspr.2019.07.010
Projects:	PICS 3 project at Purdue University in the United States
Funders:	Bill and Melinda Gates Foundation
Acknowledgement:	This study was carried out as part of the PICS 3 project at Purdue University in the United States and funded by the Bill and Melinda Gates Foundation (Grant number OPP1038622). The authors particularly thank Mrs Lankoande Moussa and Drabo Edouard, MSc students at Ouaga University I Pr Joseph Ki Zerbo, as well as all the technicians of the Central Laboratory of Agricultural Entomology of Kamboins�e for their technical support in data collection.
Links:	Google Scholar

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