Mechanisms of residue mulch-induced cereal growth increases in West Africa

The use of crop residues (CR) has been widely reported as a means of increasing crop yields across West Africa. However, little has been done to compare the magnitude and mechanisms of CR effects systematically in the different agro-ecological zones of the region. To this end, a series of field trials with millet (Pennisetum glaucum L.), sorghum [Sorghum bicolor (L.) Moench], and maize (Zea mays L.) was conducted over a 4-yr period in the Sahelian, Sudanian, and Guinean zones of West Africa. Soils ranged in pH from 4.1 to 5.4 along a rainfall gradient from 510 to 1300 mm. Treatments in the factorial experiments were three CR rates (0,500, and 2000 kg ha^-1)and several levels of phosphorus and nitrogen. The results showed CR-induced total dry matter (TDM) increases in cereals up to 73% for the Sahel compared with a maximum of 16% in the wetter Sudanian and Guinean zones. Residue effects on weakly buffered Sahelian soils were due to improved P availability and to a protection of seedlings against wind erosion. Additional effects of CR mulching on topsoil properties in the Sahel were a decrease in peak temperatures by 4°C and increased water availability. These mulch effects on soil chemical and physical properties strongly decreased from North to South. Likely explanations for this decrease are the decline of dust deposition and wind erosion hazards, the higher soil clay content, lower air temperature, and a faster decomposition rate of mulch material with increasing rainfall from the Sahel to the Sudanian and Guinean zones.

Cereal/legume rotations affect chemical properties and biological activities in two West African soils

A more widespread use of cereal/legume rotations has been suggested as a means to sustainably meet increasing food demands in sub-Saharan West Africa. Enhanced cereal yields following legumes have been attributed to chemical and biological factors such as higher levels of mineral nitrogen (Nmin) and arbuscular mycorrhizae (AM) but also to lower amounts of plant parasitic nematodes. This study was conducted under controlled conditions to examine the relative contribution of AM, plant parasitic nematodes and increased nitrogen (N) and phosphorus (P) availability to cereal/legume rotation effects on two West African soils. Sample soils were taken from field experiments at Gaya (Niger) and Fada (Burkina Faso) supporting continuous cereal and cereal/legume rotation systems and analysed for chemical and biological parameters. Average increases in cereal shoot dry matter (DM) of rotation cereals compared with continuous cereals were 490% at Gaya and 550% at Fada. Shoot P concentration of rotation millet was significantly higher than in continuous millet and P uptake in rotation cereals was on average 62.5-fold higher than in continuous cereals. Rotation rhizosphere soils also had higher pH at both sites. For the Fada soil, large increases in Bray1-P and organic P were observed in bulk and rhizosphere soils. Plant parasitic nematodes in roots of continuous cereals were 60–80-fold higher than in those of rotation cereals. In both cropping systems mycorrhizal infection rates were similar at 37 days after sowing (DAS) but at 57 DAS AM infection was 10–15% higher in rotation sorghum than in continuous sorghum. This study provides strong evidence that cereal/legume rotations can enhance P nutrition of cereals through improved soil chemical P availability and microbiologically increased P uptake.

Causes of legume-rotation effects in increasing cereal yields across the Sudanian, Sahelian and Guinean zone of West Africa

On-farm experiments and pot trials were conducted on eight West African soils to explore the mechanisms governing the often reported legume rotation-induced cereal growth increases in this region. Crops comprised pearl millet (Pennisetum glaucum L.), sorghum (Sorghum bicolor Moench), maize (Zea mays L.), cowpea (Vigna unguiculata Walp.) and groundnut (Arachis hypogaea L.). In groundnut trials the observed 26 to 85% increases in total dry matter (TDM) of rotation cereals (RC) compared with continuous cereals (CC) in the 4th year appeared to be triggered by site- and crop-specific early season differences in nematode infestation (up to 6-fold lower in RC than in CC), enhanced Nmin and a 7% increase in mycorrhizal (AM) infection. In cowpea trials yield effects on millet and differences in nematode numbers, Nmin and AM were much smaller. Rhizosphere studies indicated effects on pH and acid phosphatase activity as secondary causes for the observed growth differences between RC and CC. In the study region legume-rotation effects on cereals seemed to depend on the capability of the legume to suppress nematodes and to enhance early N and P availability for the subsequent cereal.

Cereal/legume rotation effects on rhizosphere bacterial community structure in West African soils

The increased use of cereal/legume crop rotation has been advocated as a strategy to increase cereal yields of subsistence farmers in West Africa, and is believed to promote changes in the rhizosphere that enhance early plant growth. In this study we investigated the microbial diversity of the rhizoplane from seedlings grown in two soils previously planted to cereal or legume from experimental plots in Gaya, Niger, and Kaboli, Togo. Soils from these legume rotation and continuous cereal plots were placed into containers and sown in a growth chamber with maize (Zea mays L.), millet (Pennisetum glaucum L.), sorghum (Sorghum bicolor L. Moench.), cowpea (Vigna unguiculata L.) or groundnut (Arachis hypogaea L.). At 7 and 14 days after sowing, 16S rDNA profiles of the eubacterial and ammoniaoxidizing communities from the rhizoplane and bulk soil were generated using denaturing gradient gel electrophoresis (DGGE). Community profiles were subjected to peak fitting analyses to quantify the DNA band position and intensities, after which these data were compared using correspondence and principal components analysis. The data showed that cropping system had a highly significant effect on community structure (p <0.005), irrespective of plant species or sampling time. Continuous cereal-soil grown plants had highly similar rhizoplane communities across crop species and sites, whereas communities from the rotation soil showed greater variability and clustered with respect to plant species. Analyses of the ammonia-oxidizing communities provided no evidence of any effects of plant species or management history on ammonia oxidizers in soil from Kaboli, but there were large shifts with respect to this group of bacteria in soils from Gaya. The results of these analyses show that crop rotation can cause significant shifts in rhizosphere bacterial communities.

Dress- and Auto- Makers in the “Free Trade” Arena

Even though there have been many studies on the impact of trade liberalisation on labour standards, most of the studies are at national level, and there is a lack of research at industry level. This paper examines the impact of free trade on labour standards in capital- and labour-intensive industries in a developing country. For empirical findings, I take the case of the garment industry, representing labour-intensive industry, and automotive industry, representing capital-intensive industry, in Indonesia in the face of ASEAN Free Trade Area (AFTA). Since the garment industry is a women-dominated industry, while the automotive industry is a men-dominated industry, this paper also employs a feminist perspective. As such, this paper also investigates whether free trade equally affects men and women workers. Besides free trade, other independent variables are also taken into account. Employing quantitative and qualitative methods, empirical evidence shows that there is an indication that free trade has a negative relationship with labour standards in the garment industry, whereas a positive relationships with labour standards in the automotive industry. This implies that free trade might result in decreasing labour standards in labour-intensive industry, while increasing standards in capital-intensive industry. It can also be inferred that free trade unequally affect men and women workers, in that women workers bear the brunt of free trade. The results also show that other internal and external independent variables are indicated to have relationships with labour standards in the garment and automotive industries. Therefore, these variables need to be considered in examining the extent of the impact of free trade on labour standards in labour- and capital-intensive industries.

Hegemony, Private Actors, and International Institutions: Transnational Corporations as the agents of transformation of the trade regime from GATT to the WTO

Diese Dissertation hat das Ziel, zum einen die Transformation des Handelssystems von der GATT zur Welthandelsorganisation (WTO) im Kontext einer veränderten Weltordnung und zum anderen die Rollen von transnationalen Unternehmen im Rahmen dieser Transformation zu untersuchen und zu verstehen. Die Arbeit wird theoretisch vom Neogramscianismus angeleitet, da die etablierten Ansätzen in den Internationalen Beziehungen und der International Politischen Ökonomie nur unzureichend die intersubjektive Natur von Regimen und nicht-staatlichen Akteuren darstellen. Für Anhänger des Neogramscianismus sind internationale Regime intersubjektive Einheiten, deren Zusammenspiel von Ideen und Machtkonfigurationen historische Strukturen prägen. Die Hegemonie ist ein Konzept, das soziale Einflüsse als Agenten historischen Wandels in international Regimen und der Weltordnung zusammenbindet. Mit dem Konzept der Hegemonie wird eine Machtsituation beschrieben, in der politische Macht in legitime Autorität übersetzt wird, indem die Zustimmung subalterner Akteure eingeholt wird. Hegemonie beinhaltet die konsensuellen Aspekte von Machtausübung in einer jeweiligen Weltordnung. Diese Dissertation argumentiert vor allem, dass die Transformation des Handelssystems als hegemonisch bezeichnet werden kann, da sie parallel mit der Transformation der Weltordnung von einer von den USA dominierten Nachkriegszeit zu einer neoliberalen Hegemonie stattfand. Mit der Transformation zur Welthandlungsorganisation wird der legale Rahmen des Handelssystems neu strukturiert und ihre normative Grundlagen neu definiert, wodurch der ethische Rahmen des Neoliberalismus reflektiert wird. Diese Änderungen werden in der neuartigen Anerkennung der legitimen Autorität des Marktes gegenüber Nationalstaaten und der Anerkennung von der Notwendigkeit von bindenden Disziplinen, die Regierungen übergeordnet sind, reflektiert. Diese Dissertation analysiert zwei Fälle, um die Rolle von transnationalen Unternehmen innerhalb diese Transformationsprozesses zu erklären. Dabei wird der Fokus vor allem auf die Aktivitäten und Fähigkeiten der Unternehmen gerichtet, die Ausrichtung des Handelsregimes zu bestimmen. Die erste Studie untersucht die Eingliederung von Dienstleistungen in das GATT Regime vor und während der Uruguay-Runde (1986 – 1994) und argumentiert, dass diese Eingliederung zu einer Neudefinierung von Liberalisierung und Normen der Nichtdiskriminierung führte. Die zweite Studie analysiert den gescheiterten Versuch, ausländische Direktinvestitionen noch bevor und während der 2001 begonnenen Doha Runde in die Welthandelsorganisation zu integrieren. Letztendlich wird in dieser Dissertation argumentiert, dass transnationale Unternehmen, die in den Vereinigten Staaten ansässig sind, hegemonische Agenten der Regimetransformation waren und eine wichtige Rolle dabei gespielt haben, Dienstleistungen in das GATT einzubinden. Und zwar gelang ihnen dies durch eine in den späten 1970er Jahren begonnenen Kampagne. Auf der einen Seite war die Kampagne darin erfolgreich, etablierte Denkstrukturen zu Handelsthemen systematisch im Sinne des Neoliberalismus zu verändern – und zwar sowohl hinsichtlich der normativen Inhalte als auch der intersubjektiven Bedeutungen des Regimes. Auf der anderen Seite deutet der Fall des Investitionsabkommens die Grenzen der hegemonischen Ideen, Institutionen, und Strömungen seit den frühen 90er Jahren an. Transnationale Unternehmen, die in Europa ansässig waren, sind mit ihren Bemühungen gescheitert, das Regime weiter zu transformieren und das Thema Investitionen in die legalen und normativen Rahmenbedingungen der WTO zu integrieren. Die Prioritäten und Strategien der transnationalen Unternehmen, die Agenda der WTO zu beeinflussen, waren beschränkt und wurden im Kontext einer angefochtenen neoliberalen Hegemonie geformt, die wiederum von dem Widerstand und anti-hegemonischen Kampagnen der Zivilgesellschaft beeinflusst wurden. Die Analyse in dieser Dissertation wurde durch eine qualitative Diskursanalyse von Sekundär- und Primärquellen durchgeführt: Regierungsvorschläge, Verhandlungstexte, Konferenzzusammenfassungen und Statements von Unternehmen.

Re-Framing Trade

Given the substantial and increasing encroachment of trade agreements into almost every aspect of economic and social life, there is a pressing need for research that provides a more coherent framework for understanding the source and effectiveness of organised labour ’s power and capacity to influence international trade policy. Taking the union protests against the General Agreement on Trade in Services (GATS) as a case study, this research uses core concepts derived from social movement theory to analyse the opportunities that existed for unions to influence these trade negotiations and their capacity to identify and take advantage of such opportunities. Importantly, it adds a power analysis designed to reveal the sources of power that unions draw on to take action. The research demonstrates that even where unions faced considerable constraints they were able to re-frame trade issues in a way that built broad support for their position and to utilise opportunities in the trade negotiation process to mobilise resistance against the GATS and further liberalisation of services. The theoretical framework developed for the research provides conceptual tools that can be developed for improving strategic campaign planning and for analytical assessment of past campaigns. The theoretical framework developed for this research has potential for further application as an analytical and strategic planning tool for unions.

From Market- to Development Orientation - The Trade Aspect of Food Security and Agriculture

Trade rules are suggested to be one of the reasons for the hunger in the world and environmental damage. As current trade rules encourage market orientation and therefore specialization and industrialization of agriculture, which has as side effects rural hunger and environmental damage, there is room for improvement in the international trade regime. One main finding of Nexus Foundations' work in Geneva is a possible new orientation for agricultural and food markets – an orientation on development, rather than purely on markets. This development orientation consists of several elements from development of soil fertility to local markets and consumer relatedness. Since the Bali Ministerial in 2013, the WTO has set up a four year work programme on the issue of food security related to food reserves. This opens the chance to discuss broader food security issues in the realm of trade negotiations.

The Transatlantic Trade and Investment Partnership (TTIP)

The United States of America and the European Union are currently negotiating a Transatlantic Trade and Investment Partnership (TTIP). It is one of the most ambitious free trade and investment initiatives, going much further than eliminating tariffs. TTIP mainly aims at reducing “non-tariff barriers”. While tariffs on goods have been imposed with an eye to foreign competition, most of the non-tariff barriers are the laws and regulations that are the result of social struggles for the protection of consumers and workers. It is therefore certain that TTIP will impact workers. This volume provides a preliminary assessment of the likely consequences for labor by: - providing an overall introduction to the TTIP negotiations; -assessing the reliability of the studies claiming employment gains; - highlighting specific problematic proposals such as the investor-to-state dispute settlement mechanism; - presenting the position of organized labor from both sides of the Atlantic. / Among the contributors are Stefan Beck (Kassel), Lance Compa (Ithaca, New York), Pia Eberhardt (Brussels) and Werner Raza (Vienna).

Pursuing a Developmental State Trade Agenda in a Neo-Liberal Context

This book explains why it was possible for the Worker’s Party (PT) in Brazil and the African National Congress (ANC) in South Africa to pursue a developmental state trade policy, in spite of neoliberal constraints. The major theoretical lenses are three-fold. It applies state theory (macrolevel), policy network analysis (meso-level) and theories on political parties with emphasis on factional politics (micro-level). This book highlights the socio-political relevance of comparatively progressive policy frameworks and expands the debate on how to re-gain national policy space for progressive reform policies even under neoliberal constraints.