Effects of manure quality and application forms on soil C and N turnover of a subtropical oasis soil under laboratory conditions

Our knowledge of the agricultural sustainability of the millennia-old mountain oases in northern Oman is restricted in particular with respect to C and N turnover. A laboratory study was conducted (1) to analyse the effects of rewetting and drying on soil microorganisms after adding different manures, (2) to investigate the effects of mulching or incorporating of these manures, and (3) to evaluate the relationships between C and N mineralisation rates and manure quality indices. During the first 9-day rewetting and drying cycle, i.e. the “mulch” period, the content of extractable organic C decreased by approximately 40% in all four treatments. During the second 9-day rewetting and drying cycle, i.e. the “incorporation” period, this fraction decreased insignificantly in almost all treatments. The control and mature manure treatments form the first pair with a low percentage of total organic C evolved as CO2 (0.3% in 18 days) and a considerable percentage of total N mineralised as NH4 and NO3 (1% in 18 days), the fresh and immature manure treatments form the second pair with a higher amount of total organic C evolved as CO2 (0.5% in 18 days) and no net N mineralisation. During the first 9-day rewetting and drying cycle, the contents of microbial biomass C and biomass N increased by approximately 150% in all four treatments. During the second 9-day rewetting and drying cycle, no further increase was observed in the control and immature manure treatments and a roughly 30% increase in the other two treatments.

China's Labor Question

The Honda workers’ strike in 2010 attracted world wide attention. It was one of thousands of labor disputes that happen every year in China, but it was the first major calling for the right of workers to represent themselves in collective bargaining. The question of representation is therefore the main topic of the book. The various contributors to this volume share the view that the Chinese party-state takes the protest against social inequality seriously. It has enacted many laws aimed at channeling dissatisfaction into safe channels. The implementation of these laws, however, lags behind and these laws do not include the right of freedom of association. Without this right, super-exploitation will persist and the system of labor relations will remain prone to eruptive forms of protest. The first part of the book provides an overview of the economic context of Chinese labor relations, the transformation of class-relations, the evolution of labor law, and government policies intended to set a wage floor. Based on extensive field research, the second part looks at the evolution of labor relations at the industry level. In the third part, the focus shifts to the Corporate Social Responsibility agenda in China. The final part looks at the connection between land reform and social inequality.

Reciprocal and wage labour in rural Ecuador. A quantitative analysis

This paper analyses the determinants for rural Ecuadorian households to participate in community works, to exchange labour, and to use paid labour. The results show that participation in community work is more common among indigenous peoples who are more committed with community and live in areas with relatively high population densities. Exchange labour agreements are more common among indigenous households settled in areas where industrial agriculture has not penetrated yet. Instead, paid labour is used by small and educated households which have access to credit.