The phrase ‘global land grab’ has become a catch-all framework to describe and analyze the current explosion of (trans)national commercial land transactions revolving around the production and sale of food and biofuels. Initially deployed and popularised especially by activist groups deeply concerned and opposed to such transactions from an environmental-agrarian justice perspective, the signif...

Winter catch crops are grown to scavenge nutrients over a period of unfavorable growth conditions and conserve for subsequent release the following main crop. Since environmental have strong impact on nutrient capture in roots shoots individual crop species, we anticipated that mixtures will be more durable efficient due compensatory effects among component species. We tested this hypothesis de...

The “convex hull problem” is a catch-all phrase for computing various descriptions of a polytope that is either specified as the convex hull of a finite point set in R or as the intersection of a finite number of halfspaces. We first define the various problems and discuss their mutual relationships (Section 26.1). We discuss the very special case of the irredundancy problem in Section 26.2. We...

In temperate climate zones, long periods without rainfall or with excessive are common during sowing and the initial vegetation of a catch crop. These can result in poor emergence and/or low yields. The study aimed to determine influence depth furrow crops on soil moisture immediate vicinity seeds sown (1), dynamics germination plant (2), biomass yield (3). Three depths (4–5 cm FS-S, 6–7 FS-M, ...

Much of Africa is among the world’s regions with lowest yields in staple food crops, and climate change is expected to make it more difficult to catch up in crop production in particular in the long run. Various agronomic measures have been proposed for lifting agricultural production in Africa and to adapt it to climate change. Here, we present a projection of potential climate change impacts ...

The ClpXP protease of bacteria can degrade a wide variety of proteins while maintaining remarkable substrate selectivity. New work in Escherichia coli implicates adaptor proteins in enhancing substrate selectivity and regulating the flow of substrates to cellular proteases.