162 research outputs found
Building Stress Resilience of Cereals under Future Climatic Scenarios: ‘The Case of Maize, Wheat, Rice and Sorghum’
World population is projected to reach 10 billion by 2050 and the phenomenon is expected to cause a surge in demand for food, feed and industrial raw materials. Cereals (i.e., carbohydrate-rich grain crops) are the most widely grown and consumed crops worldwide. All cereals combined provide approximately 56% and 50% of global energy and protein needs, respectively. Maize, wheat, rice, barley and sorghum are the most produced and consumed cereals, globally. These are widely grown across the world from the tropics to the temperate regions. Although efforts are being done by governments, research organizations and academic institutions to increase productivity of these important crops, huge yield deficits still exist. Climate induced biotic (e.g., pests and diseases) as well as abiotic stresses (especially; heat and drought) are widely regarded as the key yield-constraining factors of most cereal crops. Given the contribution of cereals in global food and nutrition security, improvements in productivity of cereal production systems is mandatory if livelihoods are to be guaranteed. This chapter discusses the global production and utilization of four of the major global cereals, limiting factors to their productivity and possible solutions to the production constraints
Does variation in plant diversity and abundance influence browsing intensity in black rhinos?
This research article was published by Wiley Online Library in 2023Variations in forage availability, selection and preferences can lead to intense foraging competition and depletion of food consequently lowering diet quality and population performance of black rhino species. This study investigated seasonal variations in rhino diet, foraging, preference and browsing intensity and how this is influenced by plant diversity and availability in Mkomazi National Park (MKONAPA). Fifty-eight square grids were randomly selected in each season, and plots were laid for vegetation assessment during wet and dry seasons in the sanctuary. Browsed species by rhinos were compared with rhino feeding data from fourteen rhino range areas within Africa. More than 85% of species edible in MKONAPA were similar to those in rhino range areas. Acalypha ornata, Grewia similis and Commiphora africana were highly utilised specie in both seasons. Diversity and abundance of consumed browses decreased towards the dry season while browsing intensity increased with forage preference in both seasons and was prominent when browse availability was low in dry seasons. Our study established seasonal variation in dietary composition, browsing intensity and preferences for black rhinos. We suggest establishing nutritional composition of preferred forages, assessing density of competitor browsers, translocating excess rhinos or expanding the sanctuary to meet the recommended ecological carrying capacity
Irrigation development in Zimbabwe: understanding productivity barriers and opportunities at Mkoba and Silalatshani irrigation schemes
Productivity barriers and opportunities influencing smallholder irrigation sustainability in Zimbabwe were identified using case studies of the Silalatshani and Mkoba irrigation schemes. The major barriers were poor infrastructure and soil fertility, and poor access to farm inputs, farm implements, functioning markets and agricultural knowledge, which resulted in low yields, food insecurity and negative farm income. Most irrigated land remains unused, and marketing of produce is uncoordinated. Mobile technologies provide opportunities for market information dissemination. Institutions are needed to continuously encourage dialogue among agricultural value chain stakeholders to allow irrigators to align their operations to market demands and improve the viability of irrigation systems
Theory and application of Agricultural Innovation Platforms for improved irrigation scheme management in Southern Africa
Many small-scale irrigation systems are characterized by low yields and deteriorating infrastructure. Interventions often erroneously focus on increasing yields and rehabilitating infrastructure. Small-scale irrigation systems have many of the characteristics of complex socio-ecological systems, with many different actors and numerous interconnected subsystems. However, the limited interaction between the different subsystems and their agents prevents learning and the emergence of more beneficial outcomes. This article reports on using Agricultural Innovation Platforms to create an environment in which irrigation scheme actors can engage, experiment, learn and build adaptive capacity to increase market-related offtake and move out of poverty.This work was supported by the Australian Centre for International Agricultural Research under [grant
number FSC/2013/006]
Integrated ag-data hub in Zambia using existing CIS platforms coupled with the iSAT and DEA data cube
This report is divided into two parts (i) technical progress on building a prototype of the Agdatahub as well as generation and dissemination of advisories using iSAT (ii) governance mechanisms and stakeholder engagement to host Agdatahub
Virological profile of pregnant HIV positive women with high levels of CD4 count in low income settings: Can viral load help as eligibility criteria for maternal triple ARV prophylaxis (WHO 2010 option B)?
INTRODUCTION:
The objective of the study was to determine HIV-1 RNA load profile during pregnancy and assess the eligibility for the maternal triple antiretroviral prophylaxis. It was an observational cohort of pregnant HIV positive women ignorant of antiretroviral therapy with CD4 cell count of > 350/mm(3)
METHODS:
Routine CD4 cell count assessment in HIV positive pregnant women completed by non exclusive measurement of the viral load by PCR /ARN in those with CD4 cell count > 350/mm(3). Exclusion criteria: highly active antiretroviral therapy prior to pregnancy.
RESULTS:
Between January and December 2010, CD4 cell count was systematically performed in all pregnant women diagnosed as HIV-infected (n=266) in a referral center of 25 antenatal clinics. 63% (N=170) had CD4 cell count > 350/mm(3), median: 528 (IQR: 421-625). 145 underwent measurement of viral load by PCR/RNA at a median gestational of 23 weeks of pregnancy (IQR: 19-28). Median viral load 4.4 log(10)/ml, IQR (3.5-4.9).19/145(13%) had an undetectable viral load of = 1.8 log(10)/ml. 89/145(61%) had a viral load of = 4 log(10)/ml and were eligible for maternal triple ARV prophylaxis.
CONCLUSION:
More than 6 in 10 pregnant HIV positive women with CD4 cell count of > 350/mm(3) may require triple antiretroviral for prophylaxis of MTCT. Regardless of cost, such results are conclusive and may be considered in HIV high burden countries for universal access to triple antiretroviral prophylaxis in order to move towards virtual elimination of HIV MTCT
The dynamics of the relationship between household decision-making and farm household income in small-scale irrigation schemes in southern Africa
Irrigation has been promoted as a strategy to reduce poverty and improve livelihoods in southern Africa. Households’ livelihood strategies within small-scale irrigation schemes have become increasingly complex and diversified. Strategies consist of farm income from rain-fed and irrigated cropping as well as livestock and an increasing dependence on off-farm income. The success of these strategies depends on the household’s ability to make decisions about how to utilize its’ financial, labour, land and water resources. This study explores the dynamics of decision-making in households on-farm household income within six small-scale irrigation schemes, across three southern African countries. Household survey data (n = 402) was analyzed using ordered probit and ordinary least squares regression. Focus group discussions and field observations provided qualitative data on decision-making in the six schemes. We found strong support for the notion that decision-making dynamics strongly influence total household income. Households make trade-offs between irrigation, dryland, livestock and off-farm work when they allocate their labour resources to maximize household income; as opposed to maximizing the income from any individual component of their livelihood strategy, such as irrigation. Combined with the impact of the small plot size of irrigated land, this is likely to result in sub-optimal benefits from expensive investments in irrigation infrastructure. Policy-makers must consider this when developing and implementing new policies
Theory and application of Agricultural Innovation Platforms for improved irrigation scheme management in Southern Africa
AICCRA leveraging on networks to communicate climate information and climate smart agriculture to smallholder farmers in Zambia
AICCRA Zambia supports networks and community responses through programs on climate innovation and agribusiness, leveraging on media and communication channels. Interventions are designed to stimulate networks of actors at multiple levels (macro, meso, micro) that catalyse dissemination of climate information and climate smart products and services to smallholder farmers. At project level, communication and outreach strategies that support networks and linkages within and across the networks can also contribute to achieving impact. Network strengthening and media communications can provide an important bridge for research, development, climate and agri-business to achieve their targets of enhancing uptake of climate information and climate smart agriculture. Assessment tools are being developed to identify what networks, partnerships and strategic stakeholders the media can leverage on and start working with. Assessing value creation stories with key stakeholders will show how communication and outreach activities of the AICCRA project have resulted in stimulating response by intermediaries and end-users and improved program performance and impact on smallholder farmers. Providing feedback on how good the media interventions were, how they contributed to local impact pathways, and what new opportunities for partnerships were discovered, supports monitoring and evidencing achievements in accordance with the project results framework
The Shrinking Space for Civil Society : Philanthropic Perspectives From Across the Globe
The shrinking space for civil society and reported violations to fundamental and democratic rights are a global phenomenon. Foundations and other philanthropic organisations have reported problematic laws in Algeria, China, Columbia, Egypt, Ethiopia, India, Russia, Syria and Zimbabwe, just to name a few. And EU countries are hardly immune. Of serious concern have been ongoing challenges to civic rights in Hungary, UK surveillance programmes, anti-protest laws in Spain, counterterrorism measures in France, and attacks in Poland on the freedom of public media and the independence of the judiciary. In this publication, a group of European Foundation Centre members working across the globe share their thoughts on and experience of the shrinking space for civil society. This publication signals the EFC's ambition to scan the landscape on developments important to its members in an effort to contribute intelligence and capture the experience of foundations to make sense of the increasingly complex and interconnected world in which we all live. The insights from foundations and other philanthropic organisations on this issue are particularly valuable as these organisations, due to their funding practice and policy work, are often ahead of the curve in terms of what's happening on the ground
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