On Purdue Improved Cowpea Storage (PICS) technology: Background, mode of action, future prospects

Murdock, Larry L.; Baoua, Ibrahim

doi:10.1016/j.jspr.2014.02.006

Cited by 84 publications

(65 citation statements)

References 14 publications

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“…Farmers are encouraged by PICS’ promise of better grain storage, as evidenced by the continued sales of the bags (Murdock and Bauoa, 2014). Even so, some farmers have expressed concerns about grain stored in bags that may have small leaks.…”

Section: Introductionmentioning

confidence: 99%

Grain size and grain depth restrict oxygen movement in leaky hermetic containers and contribute to protective effect

Williams

Murdock

Kharel

et al. 2016

Journal of Stored Products Research

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Postharvest insect pests threaten the nutritional and financial security of smallholder farmers in the developing world. Hermetic storage, a technology that protects grain against insects by blocking their supply of oxygen, alleviates the problem of insect-caused losses. PICS (Purdue Improved Crop Storage) bags represent one hermetic technology that improves food availability and incomes of farmers. The polyethylene liners of PICS bags are sometime damaged during use, acquiring small holes or tears. Observations in the laboratory and field suggest that insect development remains localized around the point where the bag is damaged. We hypothesized that the grain within a hermetic container that has minimal localized damage (such as an insect hole), helps retard leakage of oxygen into the bag and contributes to limiting insect damage and to the overall protective effect. To test this hypothesis, we filled 4 cm dia. by 10 cm long PVC pipes with Callosobruchus maculatus (F.) infested cowpeas and sealed them with caps having a single, insect-sized hole in its center. A vertical tube positioned above the cowpea-filled PVC pipe was filled with one of three different grains (sesame, sorghum, and maize) to different depths (0, 5, 15, 30, 50 cm). Seed size and grain barrier depth significantly reduced the level of bruchid damage to the stored cowpea in the PVC container. Smaller sized grains used for the barriers retarded insect development more effectively than larger sized grains, while deeper grain depth was more effective than shallower barriers. The grain held in a hermetic container contributes in a small, but significant, way to the effectiveness of the containers.

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Section: Introductionmentioning

confidence: 99%

Grain size and grain depth restrict oxygen movement in leaky hermetic containers and contribute to protective effect

Williams

Murdock

Kharel

et al. 2016

Journal of Stored Products Research

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“…For example, the triple bagging technology of cowpea storage was developed by Purdue scientists through USAID funded Bean/ Cowpea Collaborative Research Support Program (CRSP) in the 1990s and efforts have been invested in recent years to disseminate this technology through special donorfunded projects (e.g. the Purdue Improved Crop Storage (PICS) project funded by the Bill and Melinda Gates Foundation) (Dabire, Sanon, Ba, Yelemu, & Baributsa, 2014;Murdock & Baoua, 2014).…”

Section: Research Setting and Designmentioning

confidence: 99%

“…woven nylon or polypropylene). Each bag is tied shut with a twine or string as described in Murdock and Baoua (2014). This animation contained a comparison between results of stored cowpeas using this approach against no treatment, showing the farmers the significant potential for this approach to reduce post-harvest losses and gave a brief argument as to the financial advantage of using such an approach.…”

Section: Research Setting and Designmentioning

confidence: 99%

Can mobile phone-based animated videos induce learning and technology adoption among low-literate farmers? A field experiment in Burkina Faso

Maredia

Reyes²,

Bâ³

et al. 2017

Information Technology for Development

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This article explores an innovative approach to deliver information about new agricultural technology that combines a versatile and potentially lower cost method of developing animated videos with another low-cost method of sharing it on mobile devices (i.e. mobile phone). It describes a randomized controlled field experiment conducted in Burkina Faso to evaluate the effectiveness of animated videos shown on mobile phone compared with the traditional extension method (live demonstration) in inducing learning and adoption of two postharvest technologies among low-literate farmers. Results suggest that video-based training was as effective as the traditional method in inducing learning and understanding. For technologies that farmers were already aware of animated video shown on the mobile phone was also as effective as live demonstration in inducing adoption. However, in transferring new technologies, the traditional method was more effective in inducing adoption at p < .10, but not at p < .05. Potential role of mobile phone-based videos as part of the agricultural extension system is discussed.

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“…For small quantity, two types of hermetic storage container (bags) have been developed, Purdue Improved Crop Storage (PICS) (Murdock and Baoua et al, 2014) and GrainPro Super Bags . Other HS includes metal silo technology and silo or grain bags.…”

Section: Types Of Hermetic Storagementioning

confidence: 99%

“…Two 80 micron high-density polyethylene plastic bags, one surrounded by the second; both are enclosed by a third bag made of woven polypropylene bag for reinforcement (Murdock and Baoua et al, 2014). This technology was created in late 1980's under the USAID project for the preservation of cowpea grain in sub-Saharan Africa (Murdock et al, 2003).…”

Section: Purdue Improved Crop Storage (Pics)mentioning

confidence: 99%

Current Maize Production, Postharvest Losses and the Risk of Mycotoxins Contamination in Tanzania

Suleiman¹,

Rosentrater²

2015

2015 ASABE International Meeting

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Agriculture is the backbone of Tanzanian economy. It accounts for about one-third of the gross domestic product (GDP), provides 85 percent of all exports and saves as a livelihood to over 80 percent of the total population. Maize is the primary staple crop; it's grown in nearly all agro-ecological zones in the country. Tanzania is a major maize producer in Sub-Saharan Africa. In the last four decades, Tanzania has ranked among the top 25 maize producing countries in the world. In the 2013/14 growing seasons Tanzania produced over half billion metric tons of maize of these maize smallholder farmers produced around 85%. Despite the steady production of maize over the past three decades, post-harvest losses of maize remained significant, up to 30-40 % in some rural areas. Post-harvest handling, poor infrastructure, weather variability, biotic factors such as insects and pests, bacteria, pathogens, viruses, and fungi, often aggravate such losses. Mycotoxin producing fungi pose a major risk. Mycotoxins are toxic secondary metabolites of fungi that frequently contaminate the maize in the field and/or during storage. Mycotoxin contamination of maize poses a health risk to humans and animals if not properly managed. The most important mycotoxins in Tanzania are the aflatoxins, fumonisins and Ochratoxin. The objective of this paper was to review current literature on the production trends, consumption, post-harvest losses, and mycotoxins contamination of maize and to provide strategies to control and prevent postharvest losses and mycotoxins contamination in Tanzania. Agriculture is the backbone of Tanzanian economy. It accounts for about one-third of the gross domestic product (GDP), provides 85 percent of all exports and saves as a livelihood to over 80 percent of the total population. Maize is the primary staple crop; it's grown in nearly all agro-ecological zones in the country. Tanzania is a major maize producer in Sub-Saharan Africa. In the last four decades, Tanzania has ranked among the top 25 maize producing countries in the world. In the 2013/14 growing seasons Tanzania produced over half billion metric tons of maize of these maize smallholder farmers produced around 85%. Despite the steady production of maize over the past three decades, post-harvest losses of maize remained significant, up to 30-40 % in some rural areas. Post-harvest handling, poor infrastructure, weather variability, biotic factors such as insects and pests, bacteria, pathogens, viruses, and fungi, often aggravate such losses. Mycotoxin producing fungi pose a major risk. Mycotoxins are toxic secondary metabolites of fungi that frequently contaminate the maize in the field and/or during storage. Mycotoxin contamination of maize poses a health risk to humans and animals if not properly managed. The most important mycotoxins in Tanzania are the aflatoxins, fumonisins and Ochratoxin. The objective of this paper was to review current literature on the production trends, consumption, post-harvest losses, and mycotoxins contamination of mai...

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On Purdue Improved Cowpea Storage (PICS) technology: Background, mode of action, future prospects

Cited by 84 publications

References 14 publications

Grain size and grain depth restrict oxygen movement in leaky hermetic containers and contribute to protective effect

Grain size and grain depth restrict oxygen movement in leaky hermetic containers and contribute to protective effect

Can mobile phone-based animated videos induce learning and technology adoption among low-literate farmers? A field experiment in Burkina Faso

Current Maize Production, Postharvest Losses and the Risk of Mycotoxins Contamination in Tanzania

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