This paper examines the empirical factors determining vertical integration in the food manufacturing industry in Algeria. In this research, we focus on the effects of food industry structure, transaction costs, and several market conditions. We use data for the period of 16 years (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015) to estimate a linear regression model. Through an econometric analysis, three vertical integration measures are utilized to examine the determinants of vertical integration in food manufacturing industry. Empirical results support that there are variations in terms of the effects of industry structure and market conditions, whereas the transaction costs involved in the food industry coordination seems to have a significant effect on vertical integration trends.

This paper analyzes the vertical relationship between growers and processors in the Algerian tomato processing industry. We use extensive data on production contract outcomes for processing tomato growers (including 3,740 coordinated contracts) to examine the performance of grower-processor vertical contracts. The results indicate that the tomato grower-processor vertical relationship undergoes some deficiencies resulted in social welfare losses and lower level in contractual performance. From the side of processors, the industry has an oligopsonic structure (with CR4: 57%). From the side of tomato growers, the results indicate a relatively higher contractual default (with 53% in average). These findings suggest that public policy should pay more attention for the performances levels of the used vertical coordination mechanism in order to provide more incentive instruments and by leveraging vertical contract for tomato growers' benefit.

This article aims at analyzing Algerian farmers’ choices of marketing channels in the date-palm supply chain. Five main marketing channels were investigated: local market, intermediaries, conditioning structure, processors contracting and complete integration. Primary data collected from a sample of 118 date farmers through a field survey in Biskra region. Beside some basic statistical tools, a multinomial discrete choice model was used to analyze and evaluate the major factors affecting marketing channel choices. From the main results of this study, it was concluded that downstream vertical integration practices are lead by income-related risks minimization, and the upstream vertical integration is favorable for further downstream vertical integration. The research would provide valuable information about the date palm producer’s marketing decision-making process and thus would contribute to improving the efficiency and effectiveness of dates industry in Algeria.

In the present study, time series for annual, monthly rainfall and number of rainy days per year were analysed to quantify spatial variability and temporal trends for 22 rainfall stations distributed in northeastern Algeria for the period 1978–2010. The Mann–Kendall test and the Sen’s slope estimator were applied to assess the significance and magnitude of the trend. The results showed that precipitation decreases spatially from North to South and from East to West. The application of the Mann–Kendall test (for 0.05% threshold) to the time series data showed that for annual precipitation, no station showed statistically significant trends, unlike the number of rainy days, where there was a significant negative trend in four stations (Jijel, Constantine, Oum El Bouaghi and Tébessa). For the monthly time series, significant positive trends were observed during the months of September in the coastal stations and July for the plateaus and southern Saharan Atlas stations, while significant negative trends were recorded during the months of February and March for the stations of the extreme East in the study area. These results revealed that for the period analysed, there was no significant climate change in northeastern Algeria but there is a seasonal delay having important agroecological implications.

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