Since the early 1990s, liberalization of the seed market in Tanzania has attracted several foreign companies that now market maize hybrids in the country. In this article, we analyze the impacts of proprietary hybrids on maize yields, production, and household living standards. We build on a recent survey of smallholder maize farmers in two zones of Tanzania. Hybrid adoption rates are 48% and 13% in the North and East, respectively. Average net yield gains of hybrids are 50-60%, and there are also significant profit effects.
Most micro-level studies on the impact of agricultural technologies build on cross-section data, which can lead to unreliable impact estimates. Here, we use panel data covering two time periods to estimate the impact of tissue culture (TC) banana technology in the Kenyan small farm sector. TC banana is an interesting case, because previous impact studies showed mixed results. We combine propensity score matching with a difference-in-difference estimator to control for selection bias and account for temporal impact variability.
A group of researchers and industry writers have constructed a narrative of technological triumph for Bt cotton in India, based on an empirical record of superior performance compared to conventional seed. Counterclaims of Bt cotton failure are attributed to mutually reinforcing interactions among non-governmental organisations which avoid rigorous comparisons. However, researchers and the biotechnology industry are also engaged in a similar authentication loop for generating, validating, and publicising such facts.
This paper attempts to identify the major factors associated with some of the failures and successes of integrated watershed management policies and projects with a particular emphasis on the uplands of mainland Southeast Asia. It argues that many policy measures have been misguided by failing to acknowledge the multi- dimensional facets of sustainable watershed management and putting too much emphasis on command-and-control approaches to resource management and one- size-fits-all conservation models.
Ever since the Asilomar Conference on ‘Recombinant DNA' in February 1975, regulatory policies relating to recombinant DNA technology have focused on the idea that this technology implies threats to human health and the environment [1].
This paper provides a review of agronomic management practices supporting sustainable crop production systems and intensification, and testifying to developments in the selection of crops and cultivars. The paper also describes crop farming systems taking a predominantly ecosystem approach and it discusses the scientific application of this approach for the management of pest and weed populations.
This presentation is on AgriVIVO, a project aimed at facilitating better networking of individual researchers and the organizations they belong to for better collaborations and less duplication of efforts.
Ce rapport final dresse le bilan des activités scientifiques engagées dans le cadre du projet Adap’Terr « L’adaptation au changement climatique : les défis d’une approche intégrée pour les territoires ? ». Ce volume de synthèse, présentant les principaux résultats, s’organise en trois parties. Une première partie précise certaines questions que posent pour l’aménagement et l’urbanisme l’action climatique locale, afin de développer un cadre conceptuel en mesure d’analyser les initiatives locales face au « problème climat ».
Este documento trata de escuelas de campo y de cómo ayudan al desarrollo des capacidades.
Le Programme 2012-2013 de l’Initiative 3N vise à :
- Accroître et diversifier les productions agro-sylvo-pastorales et halieutiques pour assurer la sécurité alimentaire et nutritionnelle des populations nigériennes;
- Augmenter les revenus des producteurs et des acteurs des filières agricoles par l’amélioration de la conservation, la transformation et la commercialisation des produits agro-alimentaires ;
- Améliorer les capacités nationales de prévention et de gestion des crises et catastrophes et la résilience des populations vulnérables.