IITA Reports and Documents

Permanent URI for this collectionhttps://hdl.handle.net/10568/68742

Browse

Recent Submissions

Now showing 1 - 20 of 346
  • Thumbnail Image
    Item
    Enhancing breeding strategies for impact: gender and social dynamics in cassava and sweet potato value chains in Nigeria and Uganda
    (Report, 2025-03) Nwanze, O.; Iragaba, P.; Alengo, E.; Bello, A.; Onwuka, S.; Osaru, F.; Bayiyana, I.; Kemigisha, D.; Ejechi, M.E.; Owoade, D.; Owolabi, P.; Madu, T.; Esuma, W.; Yada, B.; Afuape, S.; Okoye, B.; Edughaen, G.; Mulwa, C.; Teeken, B.
    This report was prepared in the scope of the gender and breeding work within the RTB breeding project funded by the Gates foundation. This report shows the results of gender insights along the value chains of cassava, and sweet potato of the Roots Tubers and Banana crops carried out in Nigeria and Uganda as part of the gender and breeding work within RTB breeding project, a Gates funded project. This report functions as a source to juxtapose with data from participatory processing evaluation and processing diagnostics with renowned processors, evaluation by buyers in the market’s social space, through market auctions, as well as with consumer testing in rural and urban areas.
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
    Enhancing breeding strategies for impact: gender and social dynamics in cassava and sweet potato value chains in Nigeria and Uganda
    (Report, 2025-03) Nwanze, O.; Iragaba, P.; Alengo, E.; Bello, A.; Onwuka, S.; Osaru, F.; Bayiyana, I.; Kemigisha, D.; Ejechi, M.E.; Owoade, D.; Owolabi, P.; Madu, T.; Esuma, W.; Yada, B.; Afuape, S.; Okoye, B.; Edughaen, G.; Mulwa, C.; Teeken, B.
  • Thumbnail Image
    Item
    Participatory processing evaluation with champion processors and processing diagnostics of the processing operations
    (Report, 2025-03) Bello, A.; Iragaba, P.; Diby, N.; Chichango, A.; Guambe, O.; Okoye, B.; Ofoeze, M.; Eluagu, C.; Ejechi, M.; Onyemauwa, N.; Ukeje, B.; Okoye, C.; Nnabue, I.; Nwanze, O.; Edughaen, G.; Owoade, D.; Beugre, T.; Yapi, E.; Kouassi, A.; Adiko, E.; Koffi, C.; Kanon, L.; Bouniol, A.; Wembabazi, E.; Nuwamanya, E.; Esuma, W.; Madu, T.; Mulwa, C.; Teeken, B.
  • Thumbnail Image
    Item
    Climate-smart cropping arrangement and integrated soil fertility technologies for maize and cowpea to enhance soil health, yield, and income in Malawi
    (Report, 2025-04) Omondi, J.O.; Simwaka, P.; Kamwana, F.; Siyeni, D.; Alene, A.; Gbegbelegbe, S.; Kadwala, P.; Wupe, M.; Kyei-Boahen, S.; Chinwada, P.; Akinwale, G.
    Shrinking agricultural land size, declining soil health, poor site-specific crop varieties, and minimum cropping systems diversification to combat vagaries of climate are key factors that influence yields and production in Malawi. This study aimed to develop innovations that could improve farmers’ crop yields, while enhancing their soil health, income, climate resilience, and adaptation. A study on various nutrient combinations and crop arrangements (alternating a row of maize with a row of cowpeas) was conducted in various agro-ecologies in Malawi. The nutrient combinations ranged from 0 kg N ha-1, 100 kg N ha-1, and 200 kg N ha-1 applied to maize, while cowpea received either 30 kg N ha-1, plus or no inoculant. The application of these nutrients was split into two for 100 kg N ha-1 (two halves, at planting and at six weeks after planting) and thrice for 200 kg N ha-1—25% at planting, 37.5% at three weeks after planting, and 37.5 % at six weeks after planting. These led to a total of eleven treatments being tested across three agro-ecologies of Malawi for two seasons (2020/2021 and 2021/2022) at Chitala, Mbawa and Makoka Research Stations in Salima, Mzimba and Zomba districts, respectively. Thereafter, five promising treatments with one control were subjected to on-farm trials in seven districts (Mulanje, Chiradzulu, Zomba, Salima, Mangochi, Nkhotakota, and Kasungu) across Malawi for two seasons (2022/2023 and 2023/2024). These were evaluated by farmers in terms of yields, and acceptability through participatory evaluations and economic evaluations. Altogether, the on-station, on-farm evaluations, farmer participatory evaluation, and economic analysis revealed that application of either 100 or 200 kg N ha-1 to maize with either inoculant or 30 kg N ha-1 to cowpea in an intercropping arrangement of alternating single rows of maize with cowpea were superior to current practices in terms of grain yield, land equivalent ratio, farmer perception, and net benefit returns. Therefore, we recommended the release of these technologies to combat declining soil health, climate change and improve smallholder farmers’ income, but only two were released by the Agricultural Technology Clearing Committee of Malawi. Those two were: application of 100 kg N ha-1 to maize with either: 1) inoculant or 2) 30 kg N ha-1 to cowpea in an intercropping arrangement of alternating single rows of maize with cowpea.
  • Thumbnail Image
    Item
    Characterizing the soils of Eastern Zambia
    (Report, 2025-04) Omondi, J.O.; Mwila, M.; Banda, A.; Kyei-Boahen, S.; Chikoye, D.
    Soil health and fertility play a critical role in determining crop productivity and sustainability in agricultural systems. In Zambia, declining soil fertility due to continuous cropping, minimal organic matter inputs, and nutrient imbalances threaten agricultural productivity. This study assessed the soil properties across four districts—Katete, Nyimba, Petauke, and Sinda—in Eastern Zambia to evaluate their fertility status and potential implications for crop production. The results indicated that the general soil pH across all districts was slightly acidic. However, some camps in Katete (18.3%), Nyimba (37.5%), and Sinda (26.3%) had neutral pH, whereas none in Petauke exhibited neutral conditions. Soil electrical conductivity (EC) was relatively high across the districts, with Nyimba having the highest levels. Sodium (Na) content was high in all districts, posing potential risks of soil degradation. Organic carbon (C), nitrogen (N), and cation exchange capacity (CEC) were generally low in Sinda, Katete, and Petauke, while Nyimba showed moderate levels. Notably, 12.5% and 26.3% of camps in Katete and Sinda, respectively, had very low organic carbon, while substantial proportions of camps in Katete (43.8%), Petauke (52.9%), and Sinda (42.1%) exhibited very low nitrogen levels. Phosphorus (P) levels were mostly moderate to high, except in Nyimba, where they were relatively low. Potassium (K) was generally moderate across districts, except in Nyimba, where it was high. Calcium (Ca) was low in Katete, Petauke, and Sinda, whereas magnesium (Mg) was high in those districts but significantly elevated in Nyimba. Soil texture varied, with most soils classified as sandy loam, except in Nyimba, where sandy clay loam and clay soils predominated. These findings underscore the need for targeted and site-specific soil fertility management practices, such as liming, organic matter additions, and balanced fertilization, to enhance soil health and crop yields in Eastern Zambia.
  • Thumbnail Image
    Item
    Manioc au Gabon: vers un systeme semencier durable
    (Report, 2024) Fotso Kaute, A.; Bourobou, D.; Zinga Koumba, C.R.; Zozo, R.; Kombila, A.; Demikoyo, K.D.; Effa Effa, B.; Guibingua, M.S.; Abass, A.; Nabahungu, N.L.; Voga Moudoubou, J.D.; Fiaboe, K.
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
    Excellence in agronomy partners survey — results report
    (Report, 2024-12) Schuetz, T.; Ampadu-Boakye, T.; Calì, D.
    Excellence in Agronomy (EiA) is a CGIAR Initiative that has embarked on a journey with many partners to deliver an increase in productivity and quality per unit of input (agronomic gain) for millions of smallholder farming households in prioritized farming systems by 2030. This Initiative places a strong emphasis on women and young farmers and aims to show a measurable impact on: Food and nutrition security | Income | Resource use | Soil health | Climate resilience | Climate change mitigation. This can only be achieved through and is being implemented in partnership with many different organizations. To learn how the EiA team can improve its performance in working with partner organizations and for reporting, the Initiative conducted a partners’ satisfaction and partnership efficacy survey. The partnership efficacy was checking in on five partnership areas, like shared vision, leadership, accountability, impact delivery, communications and collaboration. The partners’ satisfaction was asking about partners’ levels of content and engagement with EiA’s products, services, technologies and/or bundles of these. The survey was conducted anonymously, but partners could identify contact details should they wish to be contacted by the team. The survey was open from 7 Nov. to 2 Dec. 2024 and took about 10 minutes to complete and offered a mix of closed, open and semi-open questions, asking for level of dis-/agreement. It was sent to 190 partners, and we got responses to the survey from 62 partners which represents a response rate of 33%. The report presents the results from the survey with a short section on some recommendations for consideration going forward and transition to the Science Programs and Accelerators, however, we want to stress that the interpretation of the results can and should be used by colleagues for their own use and perspectives.
  • Thumbnail Image
    Item
    Mikakati ya afya ya udongo kwa mifumo ya mtama nchini Kenya: Mwongozo kwa wakufunzi
    (Report, 2023-12) Kinyua, Michael; Mulei, Welissa; Kihara, Job; Mandlenkosi, Nkomo
  • Thumbnail Image
    Item
    DELIVER WP – Year Three Evaluation
    (Report, 2024-12) Nkomo, M.; Kamau, E.; Muzata, B.S.
  • Thumbnail Image
    Item
    DELIVER WP: Year Two Evaluation
    (Report, 2024-02) Nkomo, M.; Kamau, E.; Muzata, B.S.
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
    Agronomy solution profile for mechanized direct seeded rice (mDSR)
    (Report, 2024-12) Excellence in Agronomy
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
    Agronomy solution profile for planting data advisory tool in Bihar, India
    (Report, 2024-12) Excellence in Agronomy