We define and explore hydrosocial territories as spatial configurations of people, institutions, water flows, hydraulic technology and the biophysical environment that revolve around the control of water. Territorial politics finds expression in encounters of diverse actors with divergent spatial and political-geographical interests. Their territory-building projections and strategies compete, superimpose and align to strengthen specific water-control claims. Thereby, actors continuously recompose the territory's hydraulic grid, cultural reference frames, and political-economic relationships. Using a political ecology focus, we argue that territorial struggles go beyond battles over natural resources as they involve struggles over meaning, norms, knowledge, identity, authority and discourses.

No abstract

No abstract

Increased global trade in agricultural commodities has boosted fresh water consumption. This export of 'virtual water', embedded in products sold abroad, has increasingly affected local communities and ecosystems, especially in arid regions. Recent initiatives to certify agricultural production are showing a rapidly growing interest in considering water issues within schemes of quality assurance, sustainable production and fair trade. This article scrutinizes current water sustainability certification schemes, and how they affect local water user communities. The authors use three notions of governmentality to examine water sustainability standards and how they aim 'to conduct the conduct' of water users: (1) standards as 'production of truth' and 'mentalities' that constitute systems of collective rationalities, values, norms and knowledge; (2) standards as networks that prescribe roles and establish power relations between companies and producers; and (3) standards as 'techniques of visibilization' that control practices and discipline producers. Private standards in general reinforce the political and market power of private sector agro-food chains in local water management, to the detriment of local water user communities and national governments. However, sustainability certification could also potentially enable local, regional, national and international organizations of user communities to stake claims and negotiate to protect their water sources and livelihoods.

Summary• Lodging, the permanent displacement of crop plants from their vertical because of root or shoot failure, is a major yield constraint of the gluten free, panicle bearing cereal teff. The objective of this paper was to analyse the causes of lodging of teff by using, modifying and validating conventional biomechanical models.• The model parameters were obtained from a field trial with two contrasting teff cultivars, using novel in situ and laboratory measurements under wet and dry conditions. Cross-species model validation was done with rice (Oryza sativa).• Teff is more susceptible to root lodging than to shoot lodging, although the data indicated that shoot strength is also insufficient. Hence, simultaneously breeding for both improved root anchorage and shoot strength is advocated.• The study showed that the lodging model, derived for the spike-bearing cereal wheat, needed modifications in order to be able to deal with panicle-bearing plants such as teff and rice. Water adhering to plants owing to rain or dew increased calculated lodging susceptibility. To prevent underestimation of lodging susceptibility, future lodging research should be done under completely wet conditions (water saturated soil and wetted shoots)