Aymen Frija

A growing urban population and dietary changes increased wheat import bills in Africa to 9% per year. Though wheat production in the continent has been increasing over the past decades, to varying degrees depending on regions, this has not been...

The aim of this paper is twofold. The first objective is to measure the technical efficiency of mixed crop-livestock (CL) smallholder producers operating under conservation agriculture systems in Tunisian rainfed areas. The second objective is to...

This paper analyzes the complex relationships of factors influencing rangeland governance in the arid areas. A Bayesian Belief Network (BBN) model was developed in a participatory way to illustrate and assess the weight of a combination of...

This study evaluates the irrigation water volumes’ effect on the date palm productivity and water
use efficiency under several conventional and improved irrigation systems (surface, subsurface,
bubbler, subsurface drip irrigation). The study is...

This study aims to analyse Tunisian farmers’ ability to pay (ATP) in a citrus area and
propose a penalising price strategy based on the block‐pricing process to decrease over‐irrigation
without affecting farmers’ incomes. The methodology is based on...

Understanding and representing the transformation of agricultural production systems has attracted increasing interest due to its importance for identifying drivers of changes and coping mechanisms in response to global challenges. These challenges...

Low and slow adoption of innovative technologies among smallholder farmers in Tunisia is a key agricultural
development problem partly related to the existing technology transfer approach used in the country.
The objective of this study is to analyse...

Analyzing the sustainability of grazing livestock farming systems in the drylands at the farm and household or territorial levels (in terms of food security, well-being, value chain performance, feed supply, and maintenance of common grazing...

In Tunisia, rainfed agriculture is facing the major challenges of low and irregular rainfall, as well as natural resources degradation. These are further accentuated by climate change. Changes in technical and management paradigms are needed to boost...

The advent of improved lentil varieties (ILVs) in the mid-1990s solved the disease problem which almost halted lentil production in Bangladesh. Levels of adoption of ILVs have been documented in the literature, but little is known about their impacts...

Increasingly frequent droughts, declining soil fertility, and poor plantanimal-
atmosphere interactions are threatening the sustainability of integrated croplivestock
systems in the rainfed drylands of North Africa. Previous research from around the...

Climate change is expected to have serious economic and social impacts on Tunisian rural farmers. The extent of these impacts will largely depend on the level of political and structural adaptations. This study aims to evaluate the effect of...

Many agricultural research and development programs aiming at enhancing tradeoffs related to different adoption, management and policy decisions face a methodological problem in which multi-criteria ranking is used to reach acceptable compromises...

This paper analyzes the complex relationships of factors influencing residue biomass management in cereal–sheep production systems in semi-arid areas of Tunisia. The Bayesian belief network (BBN) methodology was applied to identify factors enabling...

The objective of this paper is to identify prospects for stakeholder cooperation for effective implementation of enhanced rangeland restoration techniques under different land tenure status in Tataouine Governorate of southern Tunisia, through the...

The implementation of conservation agriculture (CA) remains crucial for facing interannual variability in climatic conditions that impact durum wheat production and food security. The current work was conducted to assess the effects of the tillage...

The objective of this paper is to analyse the olive oil value chain (OVC) in the Governorate of Medenine
(south-east of Tunisia) and the relationships between its main operators for an effective involvement and better performance and resilience of...

Investment in water-saving technologies (WST) was always considered as a solution to manage water demand. Indeed, the adoption of these techniques allows the use of less water in the agricultural production process. Actually, the WST have been widely...

Literature is scanty on how public agricultural investments can help reducing the impact of future challenges such as climate change and population pressure on national economies. The objective of this study is to assess the medium and long-term...

The objectives of this study are to calculate the water use efficiency (WUE) and its determinants in small-scale horticultural farms in Jijel-Taher in the Northeast of Algeria. This paper is divided into two main parts. We first start by calculating...

The study has aimed to reveal the livelihood dynamics of rural households in Ethiopia and their association with rainfall conditions and household socio-economic characteristics. It has observed an upward livelihood patterns but fluctuating over the...

In Algeria, the management of water based on a strategy of supply and subsidies continues to be applied even as the resource becomes increasingly scarce. The demand for water in Algeria continues to grow, creating an imbalance between the available...

Increasing water shortage results in higher food prices which may affect the competitiveness of small irrigated farming systems. The purpose of this paper is to evaluate the effects of water shortage on the competitiveness of orange and wheat...

The main objective of this study is to estimate the total economic loss due to inefficient use of irrigation water in Tunisia. Several approaches have been used for this purpose. The optimal level of water application for different crops is...

We investigate the factors that affect total factor productivity growth in MENA countries. To this end, we start first by examining levels and trends in agricultural outputs and productivity growth using Torqnovist Indexes and then computing...

Soil and water conservation technologies (SWCT) are important to farmers, to the research community, as well as to the policy makers, given that declining soil health, and increasing erosion and moisture stress have implications for agricultural...

n this study, we analyzed a representative sample of sheep farms (n = 1021) using Principal Component Analysis (PCA) and multivariate K-Mean classification, to characterize the production and feeding systems across Tunisia. We also identified and...

Collaboration between actors is an important determinant of water governance, particularly in developing countries suffering from lack of institutional and organizational performances for water management. The objective of this paper is to use the...

The aim of this paper is to examine the impact of research, development extension (RD&E) and climate change (measured in terms of change in rainfall) on the productivity growth of agriculture in Tunisia during the period 1970-2011, using output-based...

The objective of this paper is to identify farmers’ strategies to adapt to groundwater shortage in vulnerable arid areas of south Tunisia.
In the selected area, the potential of rainfed agriculture is very limited and groundwater is the only source...

L’objectif de cet article est d’analyser l’efficacité technique et d’usage de l’eau d’irrigation dans le périmètre irrigué Jijel-Taher dans l’Est de l’Algérie, ainsi que l’effet de différents niveaux de quotas d’eau sur l’amélioration de ces...

En Afrique du Nord, de nombreux aquifères sont surexploités, principalement du fait d’une agriculture irriguée intensive. Cependant, les politiques publiques qui ont cherché à réguler cet usage se sont montrées jusqu’à maintenant peu efficaces, du...

Conservation Agriculture (CA) have a large potential for enhancing cereal yields in the semi-arid areas through
better management of soil moisture. The objective of the current paper is to quantify, at national level, the impact
of CA adoption in...

The main objectives of the current study are to quantify the Total Factor Productivity (TFP) growth of durum wheat sector in Tunisia and to identify its main determinants. The Malmquist index approach was applied for the calculation of TFP growth...

The main objectives of this study are to evaluate the impact of irrigation water use efficiency improvement on enhancing the value of water used for irrigation; and to estimate the potential for private water cost reductions in irrigated durum wheat...

Around 27% of aquifers in Tunisia are being overexploited. Groundwater extractions is mainly for the irrigation sector, where more than 40% of the water used for irrigation comes from GW sources. The objective of this study is to critically review...

This research aims to assess the Total Factor Productivity (TFP) of the whole agricultural sector in Egypt for the period 1961-2012 using Törnqvist index calculations. Particularly, it aims to investigate: (1) the most important factors explaining...

Malgre´ les efforts de la recherche et les multiples interventions desE´ tats, la productivite´ des
ressources en eau, terre et capital, reste souvent limite´e, notamment en Tunisie. Cette e´tude
pre´sente un cadre d’analyse des performances des...

The objective of this paper is to calculate the total factors productivity (TFP) growth of the Tunisian agricultural sector, between 1961 and 2012, and to assess its main determinants. Data about agricultural inputs and outputs was collected for the...

The objectives of this study are twofold. Firstly, we aim to measure the technical,
scale and economic efficiencies for a sample of 170 cereal farmers in Chebika region
(Central Tunisia) using Data Envelopment Analysis (DEA) method. Secondly...

Despite research efforts and the multiple interventions of States, the productivity of water, land, and capital resources is often low, particularly in Tunisia. This study provides a framework for analyzing the performance of irrigated farms and...

A comprehensive assessment of the Tunisian agricultural potential, production, natural resources
management and policies has been presented using SWOT (strengths, weaknesses, opportunities and threats)
analysis. Concerning the strengths of the...