Where Do We Stand 20 Years after the Assessment of Soil Nutrient Balances in Sub-Saharan Africa?

2016 ◽  
pp. 513-552
Keyword(s):  
Soil Nutrient ◽  
Sub Saharan Africa ◽  
Nutrient Balances ◽  
Sub Saharan

scholarly journals Soil nutrient maps of Sub-Saharan Africa: assessment of soil nutrient content at 250 m spatial resolution using machine learning

2017 ◽  
Vol 109 (1) ◽  
pp. 77-102 ◽  
Author(s):  
Tomislav Hengl ◽  
Johan G. B. Leenaars ◽  
Keith D. Shepherd ◽  
Markus G. Walsh ◽  
Gerard B. M. Heuvelink ◽  
...  
Keyword(s):  
Machine Learning ◽  
Spatial Resolution ◽  
Soil Nutrient ◽  
Nutrient Content ◽  
Sub Saharan Africa ◽  
Soil Nutrient Content ◽  
Sub Saharan

scholarly journals Nitrogen Fixation and Nutritional Yield of Cowpea-Amaranth Intercrop

Agronomy ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 565
Author(s):  
Buhlebelive Mndzebele ◽  
Bhekumthetho Ncube ◽  
Melvin Nyathi ◽  
Sheku Alfred Kanu ◽  
Melake Fessehazion ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Rural Communities ◽  
Soil Nutrient ◽  
Micronutrient Deficiency ◽  
Sub Saharan Africa ◽  
First Year ◽  
Iron And Zinc ◽  
Second Year ◽  
Sub Saharan ◽  
Phosphorus And Potassium

Nutrient-poor soils coupled with micronutrient deficiency among many rural resource-poor communities remain a challenge in sub-Saharan Africa. Nutrient-poor soils can be managed through various soil amendment or fertilisation strategies. Micronutrients can be supplied through plants. The study was aimed at determining the symbiotic nitrogen fixation of cowpea as well as the contribution of inter-cropping under varying levels of nitrogen, phosphorus, and potassium (NPK) fertilisation. In addition, the amount of micronutrients supplied by cowpea and amaranth were determined. The experiment was laid out in a 2 × 4 factorial treatment structure in a completely randomised design, with inter-cropping (cowpea and amaranth) and fertiliser (control, 25%, 50%, and 100% of the recommended NPK levels) as treatment factors with four replications. Symbiotic N2 fixation of cowpea decreased from 341–448 kgN.ha−1 to 77–91 kgN.ha−1 for the first year and 557–227 kgN.ha−1 to 92−164 kgN.ha−1 for the second year with fertilisation. The iron and zinc nutritional yield increased (61–210 g.ha−1 for first year and 304–867 g.ha−1, for second year), proportional to fertiliser application to both crops. The research shows the benefits of leguminous crops in soil nutrient fertility and inorganic fertilisation with inter-cropping in managing micronutrient deficiency to meet the nutritional needs of rural communities.

Making Sense Out of Soil Nutrient Mining and Depletion in Sub-Saharan Africa

2019 ◽  
pp. 38-60
Author(s):  
Giregon Olupot ◽  
Twaha Ali Ateenyi Basamba ◽  
Peter Ebanyat ◽  
Patrick Musinguzi ◽  
Emmanuel Opolot ◽  
...  
Keyword(s):  
Soil Nutrient ◽  
Sub Saharan Africa ◽  
Making Sense ◽  
Sub Saharan ◽  
Nutrient Mining

RTS,S/AS01, a vaccine targeting pre-erythrocytic stages of Plasmodium falciparum

2017 ◽  
Vol 1 (6) ◽  
pp. 533-537
Author(s):  
Lorenz von Seidlein ◽  
Borimas Hanboonkunupakarn ◽  
Podjanee Jittmala ◽  
Sasithon Pukrittayakamee
Keyword(s):  
Protective Efficacy ◽  
Age Groups ◽  
Sub Saharan Africa ◽  
Phase Iii ◽  
European Medicines Agency ◽  
Older Children ◽  
Pivotal Phase ◽  
Malaria Epidemiology ◽  
Maximum Benefit ◽  
Sub Saharan

RTS,S/AS01 is the most advanced vaccine to prevent malaria. It is safe and moderately effective. A large pivotal phase III trial in over 15 000 young children in sub-Saharan Africa completed in 2014 showed that the vaccine could protect around one-third of children (aged 5–17 months) and one-fourth of infants (aged 6–12 weeks) from uncomplicated falciparum malaria. The European Medicines Agency approved licensing and programmatic roll-out of the RTSS vaccine in malaria endemic countries in sub-Saharan Africa. WHO is planning further studies in a large Malaria Vaccine Implementation Programme, in more than 400 000 young African children. With the changing malaria epidemiology in Africa resulting in older children at risk, alternative modes of employment are under evaluation, for example the use of RTS,S/AS01 in older children as part of seasonal malaria prophylaxis. Another strategy is combining mass drug administrations with mass vaccine campaigns for all age groups in regional malaria elimination campaigns. A phase II trial is ongoing to evaluate the safety and immunogenicity of the RTSS in combination with antimalarial drugs in Thailand. Such novel approaches aim to extract the maximum benefit from the well-documented, short-lasting protective efficacy of RTS,S/AS01.

Mortality and Society in Sub-Saharan Africa

1993 ◽  
Vol 47 (3) ◽  
pp. 555-556
Author(s):  
Lado Ruzicka
Keyword(s):  
Sub Saharan Africa ◽  
Sub Saharan
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