Home

N2AFRICA is a large scale, science-based “research-in-development” project focused on putting nitrogen fixation to work for smallholder farmers growing legume crops in Africa. Our vision of success is to build sustainable, long-term partnerships to enable African smallholder farmers to benefit from symbiotic N2-fixation by grain legumes through effective production technologies, including inoculants and fertilizers. 

With funding from the Bill & Melinda Gates Foundation, N2Africa began a second phase on the 1st of January 2014.  The project will run for five years and is led by Wageningen University together with the International Institute of Tropical Agriculture (IITA) and the International Livestock Research Institute (ILRI). We have many partners in Ghana, Nigeria, Ethiopia, Tanzania and Uganda (Core countries), and in DR Congo, Rwanda, Kenya, Mozambique, Malawi and Zimbabwe (Tier 1 countries).

In the first phase, N2Africa reached more than 230,000 farmers who evaluated and employed improved grain legume varieties, rhizobium inoculants and phosphate based fertilizers. In the second phase, we remain focused on research on and dissemination of major grain legumes in selected areas in the Core countries. In the Tier 1 countries we disseminate the outcomes from the first phase through co-funded dissemination activities. In all countries we work closely with national systems to institutionalize legume expertise. 

By 2019, N2Africa will have:

  • Tailored and adapted legume technologies to expand the area of legume production within the farm and to close yield gaps and reduce yield variability building on the (GL * GR) * E * M framework in each partner country
  • Built local expertise in each partner country
  • Provided opportunities for the poor and enhanced their food and nutritional security
  • Addressed gender disparities
  • Established new value chains and engaged with input supply chain and output market actors to ensure a sustainable supply of legume-related agro-inputs
  • Formulated improved inoculant products and developed cost-effective production and delivery methods
  • Customized flexible dissemination approaches and made enhanced use of innovative data collection and communication tools
  • Reached more than 550,000 farmers with a return on investment of US$3.5 for each US$ invested 

 

N2Africa Map Overview : Core countries (dark green), Tier 1 countries (light green).

     Click here to download the N2Africa Final Report of the First Phase.

Download our newsletter (The Podcaster)

   Wageningen University

Contact Address

Disclaimer

 

Latest news

Title Summary
Response of groundnut (Arachis hypogaea L.) varieties to rhizobia inoculation in the Sudan and northern Guinea savannas of Nigeria
Figure 1: Interaction effect of groundnut variety and rhizobia inoculation on haulm yield
Interaction effect of groundnut variety and rhizobia inoculation on haulm yield

Field trials were conducted in 2015 and 2016 seasons to evaluate the response of groundnut (Arachis hypogaea L.) varieties (KAMPALA, KWANKWASO, SAMNUT 21, SAMNUT 23, SAMNUT 24, and SAMNUT 25) to rhizobial inoculation treatments (rhizobium strains NC 92, SBG 234, MJR 518, WDL 129, +N (20 kg N ha-1), and -N (Control)) in the Sudan and northern Guinea savannas of Nigeria. ...
2
Yield stability studies on soyabean genotypes under Rhizobia inoculation in the Savanna Region of Nigeria
Soyabean (Glycine max L.) is the world’s important food legume of great nutritional value. The crop has the highest protein content (40%) of all food crops and is equivalent to proteins of animal products. The crop holds considerable potential for arresting soil fertility decline and enhancing household food nutrition. Therefore, this study aimed at exploiting soyabean genotypes for yield under Rhizobia inoculation across three locations in the Savanna Region of Nigeria. ...

Data collection on the field by Kehinde Tolorunse (right) and Sunday Joshua

4
The effects of inoculation, P application and sequential cropping on cowpea varieties on farmer’s fields in Minna, southern Guinea savanna of Nigeria

The student collecting data on the field

Two field trials were conducted in the 2016 cropping season. The first was conducted to determine the effect of phosphorus fertilizer application and rhizobial inoculation on nodulation, N2-fixation, growth and productivity of three cowpea varieties on three farmer’s fields in Minna, in the southern guinea savanna of Nigeria. ...
5
Percentage similarity of indigenous rhizobia across different agro ecological zones in Nigeria
Legumes are capable of establishing symbiotic associations with rhizobia in a process called biological nitrogen fixation which is responsible for the wide adoption of legumes as food crops, forages, green manures and in forestry. Recently, the call for the return to a sustainable form of agriculture due to pollution of water body by nitrate and increase in cost fertilizer has caused an increased interest in biological N2-fixation. ...

Similarity percentage among strains isolated from nodules trapped from soil collected from Kaduna agro ecological zone

6
How do climbing beans fit in farming systems of the eastern highlands of Uganda? Opportunities and trade-offs at farm level
Climbing beans are a new crop for farmers in Kapchorwa district, on the northern slopes of Mt Elgon in Uganda. I assessed the effects of the introduction and expansion of climbing bean cultivation at the farm level: what contribution do climbing bean have to food self-sufficiency and income, and what are trade-offs in terms of investment costs and labour. ...

Food self-sufficiency (annual kcal required by household divided by kcal supplied by crops from farm (%)) per option. Numbers on the x-axis represent farm types 1-4, letters a-d the four farms within the type.

8
Understanding GL x GR interaction in common bean and chickpea in Ethiopia
Common bean (Phaseolus vulgaris L.) and chickpea (Cicer arietinum L.) are the most important grain legumes in Ethiopia. Most of the Ethiopian soils are deficient of soil nitrogen, thereby reducing crop production far below potential. ...

Chickpea genotype
ICC13187 inoculated with LMG14989

10
Maize-grain legume intercropping for enhanced resource use efficiency and crop productivity in the Guinea savanna of northern Ghana

Spatial arrangement of maize-grain legume intercropping patterns that were tested: (A) maize-legume sown within-row (mixed), (B) one row of maize alternated with one row of legume (1 to 1 rows) and (C) two rows of maize alternated with two rows of legume (2 to 2 rows)

Smallholder farmers in the Guinea savanna agroecological zone of northern Ghana practise maize-grain legume intercropping to mitigate the risks of crop failure in sole cropping, and to safeguard household food, nutrition and income security. ...
11
Enhancing the yield and quality of cowpea fodder through inoculation and phosphorus fertilizer application in northern Ghana
Cowpea (Vigna unguiculata) is an important crop in the mixed crop livestock systems of northern Ghana since it supplies protein to the human diets, fodder to livestock, and it captures nitrogen into the farming system through biological nitrogen fixation. Cowpea fodder for feeding livestock is traded for cash and animal manure by farmers in northern Ghana. ...

Effect of rhizobium inoculation and phosphorus fertilizer application on fodder yield (A) and digestibility (B) of three cowpea varieties in SGS and NGS of northern Ghana

12
Exploring options to improve soyabean yields in Mozambique

Figure from "Feasibility of transference of inoculation-related technologies: A case study of evaluation of soyabean rhizobial strains under the agro-climatic conditions of Brazil and Mozambique" Chibeba et al.

Amaral Machaculeha Chibeba, from Mozambique, was awarded a PhD fellowship by the Wageningen University in 2012 under the N2Africa Project. During the last 12 months the awardee worked on revising two articles of his already defended PhD Thesis. Both articles have just been published with open access by Agriculture, Ecosystems & Environment. ...
13
Symbiotic performance of soyabean root nodule bacteria (RNB) recovered from Zimbabwe
Soyabean is an important crop in the agriculture-led economy of Zimbabwe and production is supported by inoculation with rhizobia. Rhizobia are soil bacteria that have the ability to form symbioses with legumes and fix nitrogen within novel structures called nodules. This obviates the need for nitrogen fertilizer, which is expensive and difficult to manage. ...

Dry weight of soyabean biomass inoculated with soyabean root nodule bacteria recovered in Zimbabwe

14
Exploring options to enhance biological nitrogen fixation and yield of soyabean and common bean in smallholder farming systems in Rwanda
One of my PhD research activities included trials that assessed the effect of mineral fertilizers (N, P, K and their combination) and manure (0, 2 and 5 t ha-1) application on climbing bean yields. This study was carried out in two sites of the Northern Province of Rwanda, which is the major climbing bean growing area in the country. As part of this work, I evaluated the response of mineral fertilizer to manure application, the role of fertilizer and manure on shoot N and P uptake. ...
15
Nutritional benefits of improved grain legume cultivation in Ghana and Kenya
My first paper ‘Grain legume cultivation and children’s dietary diversity in smallholder farming households in rural Ghana and Kenya’ was just published in Springer’s journal Food Security! Currently, I am finalising my second paper sharing results of our dietary gap assessment in northern Ghana. ...

Figure. Percentage of food group requirements covered by their production at household and district level in Karaga district and national level in Ghana. Values at household level are in median (IQR) (median is used instead of the mean because of a few strong outliers); values at district level are in mean (SD); and values at national level are percentages coverage (kg national food availability per capita/recommended food per capita (South African food-based dietary guidelines)*100).

16
Co-learning using NUANCES-FARMSIM in Kenya and Uganda - A collaboration between Humidtropics, MAIZE and N2Africa

Discussing options for improving farm production with farmers in Vihiga

My PhD research does not solely focus on legumes, but uses legumes as one of the options to sustainably increase farm-level production. The first field activities (and my PhD project) started in August 2016 with co-learning workshops in western Kenya and activities in western Uganda will follow early 2018. ...
17
Understanding the role of Public-Private Partnerships in overcoming institutional barriers to technology adoption

N2Africa tests and promotes technologies to enhance legume productivity including improved legume seeds, inoculant, phosphorus fertilizer and improved practices. Adoption by smallholders is hindered by a range of institutional, socioeconomic and biophysical barriers. In line with current thinking on market-based development, Public-Private Partnership (PPP) interventions are used by N2Africa to overcome barriers to adoption. A knowledge gap exists concerning the design and effectiveness of PPPs. ...

18
Related newsletters 19
Burleigh Dodds Science Publishing

Burleigh Dodds Science Publishing (www.bdspublishing.com) is a new “climate smart” publisher. We are building a database of review chapters, each written by a leading expert, which systematically covers the major crop varieties and, at the same time, each step in the value chain for their production, from breeding through to harvest. We are soon to publish two new books on grain legumes:

Save 20% when you order online using this exclusive discount code ...

20