IITA Bibliography System: Recent submissions

Now showing items 1081-1100 of 7933

    • Datasets from harmonised metabolic phenotyping of root, tuber and banana crop 

      Drapal, M.; Perez-Fons, L.; Price, E.J.; Amah, D.; Bhattacharjee, R.; Heider, B.; Rouard, M.; Swennen, R.; Lopez-Lavalle, L.A.; Fraser, P.D. (2022-06)
      Biochemical characterisation of germplasm collections and crop wild relatives (CWRs) facilitates the assessment of biological potential and the selection of breeding lines for crop improvement. Data from the biochemical characterisation of staple root, tuber and banana (RTB) crops, i.e. banana (Musa spp.), cassava (Manihot esculenta), potato (Solanum tuberosum), sweet potato (Ipomoea batatas) and yam (Dioscorea spp.), using a metabolomics approach is presented. The data support the previously ...

    • Optimum stand density of tropical maize varieties: an on-farm evaluation of grain yield responses in the Nigerian Savanna 

      Adnan, A.A.; Diels, J.; Jibrin, J.M.; Kamara, A.; Craufurd, P.; Shaibu, A.S.; Garba, I.I. (2022)
      Selection of appropriate sowing density is an important yield enhancing management decision in maize (Zea mays L.) production particularly in rainfed conditions. This study aimed at evaluating the optimum stand densities (OSDs) of 10 recently released maize varieties under different crop management decisions and environments. Ten maize varieties of varying characteristics were planted in the Northern Guinea Savanna of Nigeria across 30 farmer’s fields in the rainy seasons of 2016 and 2017 under ...

    • Nigeria zero hunger/IITA Policy brief No. 1: Nigeria zero hunger strategic review - nutritional status of children under the age of 5 in Benue state, Nigeria 

      Okike, I.; Ayoola, G.B.; Ogundapo, A.T.; Ojide, M.; Abdoulaye, T.; Dashiell, K.; Manyong, V. (2021)

    • Performance of elite maize genotypes under selected sustainable intensification options in Kenya 

      Rusinamhodzi, L.; Makumbi, D.; Njeru, J.M.; Kanampiu, F. (2020-04-01)
      Combining different cropping and tillage systems with different genotypes across several cropping seasons can reveal opportunities for sustainable intensification (SI). The objective of this study was to assess the performance of six maize genotypes under intercropping with conservation tillage (no-till) – two promising options for SI. The experiment was carried out over three years (or six cropping seasons) at Kiboko Research Station, Kenya with sole cropping and mouldboard ploughing as baseline ...

    • Unravelling causes of poor crop response to applied N and P fertilizers on African soils 

      Sileshi, G.W.; Kihara, J.; Tamene, L.D.; Vanlauwe, B.; Phiri, E.; Jama, B. (2022)
      A number of studies across sub-Saharan Africa have recently reported poor crop responses and low agronomic use efficiencies of applied nitrogen (AEN), phosphorus (AEP) and potassium (AEK). However, the conditions under which non-responsiveness occurs, its underlying causes and its probability of occurrence on different soil types are not well understood. Using data from 542 sites and 14 soil types in 23 African countries, we provide novel insights into the linkage between lack of response to applied ...

    • Nigeria zero hunger/IITA policy brief No. 4: Nigeria zero hunger strategic review - nutritional status of children under the age of 5 in Sokoto state, Nigeria 

      Okike, I.; Ayoola, G.B.; Ogundapo, A.T.; Ojide, M.; Abdoulaye, T.; Dashiell, K.; Manyong, V. (2021)

    • Access to finance and rural youth entrepreneurship in Benin: Is there a gender gap? 

      Senou, M.M.; Manda, J. (2022)
      Rural entrepreneurship is an important employment generation intervention for the fast-growing young labour force in developing countries. Many bottlenecks including access to finance impede rural youths from performing in their new ventures. This paper examines the impact of access to finance on rural youths' entrepreneurship in Benin using data from the second wave of the School-To-Work Transition Survey, involving over 900 youths. The paper employs the endogenous switching regression technique, ...

    • Nigeria zero hunger/IITA policy brief No. 2: Nigeria zero hunger strategic review-nutritional status of children under the age of 5 in Ebonyi state, Nigeria 

      Okike, I.; Ayoola, G.B.; Ogundapo, A.T.; Ojide, M.; Abdoulaye, T.; Dashiell, K.; Manyong, V. (2021)

    • A practical perspective on One CGIAR. Lessons from 15 years of CIALCA agricultural research for development consortium work in Central Africa 

      Schut, M.; Remans, R.; Birachi, E.; Blomme, G.; Craenen, K.; Delvaux, B.; Dercon, G.; Ekesa, B.; Kagabo, D.; Bacishoga, M.K.; Kantengwa, S.; Karangwa, P.; Kintche, K.; Manners, R.; Mapatano, S.; Merckx, R.; Muchunguzi, P.; Nduwumuremyi, A.; Niyongere, C.; Nabahungu, N.L.; Bagula, E.; Ocimati, W.; Pypers, P.; Rietveld, A.; Swennen, R.; Taulya, G.; Vandamme, E.; Zozo, R.; van Asten, P.; Vanlauwe, B. (IInternational Institute of Tropical Agriculture, 2021-06)
      There is a wind of change blowing through the sector of international agricultural research for development (AR4D), mainly as a result of comprehensive reorganisation and transformation of one of its largest players, the CGIAR. In January 2020, Food Policy published a Special Issue providing valuable external and high-level reflections, challenges and recommendations for One CGIAR. One of the papers by Coffman et al. (2020) provided five Challenges and related Recommendations to the One CGIAR.

    • Nigeria zero hunger/IITA policy brief No. 3: Nigeria zero hunger strategic review - nutritional status of children under the age of 5 in Ogun state, Nigeria 

      Okike, I.; Ayoola, G.B.; Ogundapo, A.T.; Ojide, M.; Abdoulaye, T.; Dashiell, K.; Manyong, V. (2021)

    • Influence de differents types de port de manioc de la variete << Kindisa >> sur la teneur en beta carotene 

      Wembonyama, F.; Ndonda, A.; Posho, N.B.; Matalatala, M.L.; Kakinga, W.A.; Baku, D.; Limba, K.G.; Kayawa, L.J. (2020-03)
      Cassava is the most consumed speculation in Yangambi, may help to address vitamin A deficiency problems. The study aimed to assess the yield, beta-carotene content and dry matter content of a variety of cassava. biofortified in beta-carotene (Kidisa) by comparing its three types of habit (branched, moderately branched and erect habit) under the agro-ecological conditions of Yangambi. The experimental device consisted of linear plots of 25m X 50m. The analysis of the mean was carried out, the root ...

    • Genetic diversity in Colocasia esculenta and Xanthosoma mafaffa in Togo, West Africa 

      Bammite, D.; Matthews, P.J.; Dagnon, Y.D.; Agbogan, A.; Agre, A.P.; Akintayo, O.T.; Odah, K.; Dansi, A.; Abberton, M.; Tozo, K.S. (2021)
      Taro and new cocoyam are root and leaf crops commonly grown in tropical to warm temperate regions. In Togo, they are neglected and underutilized. Here we report the genetic diversity of 26 accessions of taro and 101 accessions of new cocoyam. Analysis of simple sequence repeats revealed low polymorphic information content of 0.43 and 0.25 in taro and new cocoyam, respectively. PCA scatterplots and Neighbour Joining dendrograms based on the SSR data clustered accessions into groups that moreorless ...

    • Impact of youth-in-agribusiness program on employment creation in Nigeria 

      Bello, L.O.; Baiyegunhi, L.J.; Mignouna, D.; Adeoti, R.; Dontsop-Nguezet, P.; Abdoulaye, T.; Manyong, V.; Bamba, Z.; Awotide, B.A. (2021)
      The increasing rate of youth unemployment in Africa, particularly in Nigeria, remains among the challenges to social and economic stability. Accordingly, the Nigerian government implemented several interventions, including the Youth-in-Agribusiness (YIA) program to reduce youth unemployment. However, the effect of these programs on gainful employment creation is yet to be documented. Therefore, this study examined the impact of the YIA program on creating gainful employment among the youth. ...

    • Viruses of the fall armyworm Spodoptera frugiperda: a review with prospects for biological control 

      Hussain, A.G.; Wennmann, J.; Goergen, G.; Bryon, A.; Ros, V.I.D. (2021)
      The fall armyworm (FAW), Spodoptera frugiperda, is a native pest species in the Western hemisphere. Since it was first reported in Africa in 2016, FAW has spread throughout the African continent and is now also present in several countries in Asia as well as Australia. The invasion of FAW in these areas has led to a high yield reduction in crops, leading to huge economic losses. FAW management options in the newly invaded areas are limited and mainly rely on the use of synthetic pesticides. Since ...

    • Temperature influences on interactions among aflatoxigenic species of Aspergillus section flavi during maize colonization. 

      Ching'anda, C.; Atehnkeng, J.; Bandyopadhyay, R.; Callicott, K.; Orbach, M.J.; Mehl, H.L.; Cotty, P. (2021)
      Fungal species within Aspergillus section Flavi contaminate food and feed with aflatoxins. These toxic fungal metabolites compromise human and animal health and disrupt trade. Genotypically and phenotypically diverse species co-infect crops, but temporal and spatial variation in frequencies of different lineages suggests that environmental factors such as temperature may influence structure of aflatoxin-producing fungal communities. Furthermore, though most species within Aspergillus section Flavi ...

    • Antioxidant and starch-hydrolyzing enzymes inhibitory properties of Striga-resistant yellow-orange maize hybrids 

      Elemosho, A.O.; Irondi, E.A.; Alamu, E.O.; Ajani, E.O.; Menkir, A.; Maziya-Dixon, B. (2021)
      Most of the health benefits derived from cereals are attributed to their bioactive compounds. This study evaluated the levels of the bioactive compounds, and the antioxidant and starch-hydrolyzing enzymes inhibitory properties of six pipeline Striga-resistant yellow-orange maize hybrids (coded AS1828-1, 4, 6, 8, 9, 11) in vitro. The maize hybrids were grown at the International Institute of Tropical Agriculture (IITA), Nigeria. The bioactive compounds (total phenolics, tannins, flavonoids, and ...

    • Nitrogen use efficiency trends for sustainable crop productivity in Lake Victoria basin: smallholder farmers' perspectives on nitrogen cycling 

      Ntinyari, W.; Gweyi-Onyango, J.; Giweta, M.; Mochoge, B.; Mutegi, J.; Nziguheba, G.; Masso, C. (2022)
      Nitrogen Use Efficiency (NUE) is one of the established metrics for benchmarking management of Nitrogen (N) in various systems. Numerous approaches to calculate NUE exist, making it difficult to compare the performances of systems depending on the methodology used. This study adopted the conceptualized framework by European Union Nitrogen Expert Panel (EUNEP) to calculate NUE values for cereal crops to determine future trends for the first time in the Lake Victoria region. Data were collected ...

    • Toward structural change: gender transformative approaches 

      McDougall, C.; Badstue, L.; Mulema, A.A.; Fischer, G.; Najjar, D.; Pyburn, R.; Elias, M.; Joshi, D.; Vos, A. (International Food Policy Research Institute, 2021)

    • Smallholder farmers’ preferences for sustainable intensification attributes in maize production: evidence from Ghana 

      Kotu, B.H.; Oyinbo, O.; Hoeschle-Zeledon, I.; Rahman, N.A.; Kizito, F.; Boyubie, B. (2022-04)
      While sustainable intensification has been aggressively promoted as an agricultural development strategy among smallholder farmers since the beginning of the last decade, there is a dearth of evidence on whether farmers are interested in practicing it and how much value they put to its different components. This study aims at analyzing farmers’ preferences for maize production technologies within the lens of sustainable intensification. Employing a discrete choice experiment to generate over 12,500 ...

    • Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae) 

      Loko, Y.; Toffa, J.; Gavoedo, D.M.; Kitherian, S.; Orobiyi, A.; Tamò, M. (2022)
      Background Alloeocranum biannulipes Montr. and Sign.(Hemiptera: Reduviidae) is a predator present in stored yam chips and a promising biological control agent against Dinoderus porcellus Lesne (Coleoptera: Bostrichidae). Numerical responses of A. biannulipes to different densities (1, 2, 4, 6, and 8) of D. porcellus larvae were evaluated under ambient laboratory conditions (T°: 25 ± 2 °C; RH: 75–80%; photoperiod 12:12 h (L/D)). The number of consumed prey, duration of pre-oviposition and oviposition, ...