IITA Bibliography System: Recent submissions

Now showing items 661-680 of 7933

    • CRISPR-Cas9-based genome editing of banana 

      Tripathi, L.; Ntui, V.O.; Tripathi, J.N. (Springer, 2020)
      Genome editing is an emerging powerful new breeding tool, which can be applied for genetic improvement of banana for important agronomic traits such as resistance to biotic stresses, adaptation to climate change, and high yielding. Banana is an important staple food and cash crop, feeding millions of people in tropical and subtropical countries. Recently, CRISPR-Cas9-based genome editing system has been established for banana in a few laboratories. Here, we describe the procedures for generation ...

    • Abundance and diversity of tomato rhizosphere microbes and their effect on bacterial wilt disease 

      Nampamya, D. (Makerere University, 2019-12)
      The use of land for agricultural production is always accompanied with changes in microbial diversity and emergency of new pathogens. Microbial imbalances and unevenness have enhanced multiplication of pathogens and proliferation of many soil borne diseases, which are tedious to control. Biocontrols are promising and environmentally friendly agents against such diseases. However, microbiome composition and land use management have been mentioned as core factors in effectiveness of biocontrols. ...

    • The forest-based farming system: highly diverse, annual and perennial systems under threat 

      Hauser, S.; Norgrove, L.; Tollens, E.; Nolte, C.; Robiglio, V.; Gockowski, J. (Routledge, 2019)
      African forest-based farming systems (FBFS) are the starting point for most humid zone farming systems; they exist only at low population densities and, depending on population growth, are a relatively short transition phase into more sedentary systems with higher levels of specialization. FBFS provide a wide range of food and non-food products for many of which no alternative sources exist. FBFS farmers are highly food secure yet poorly connected to markets and service providers, thus severely ...

    • The tricot citizen science approach applied to on-farm variety evaluation: methodological progress and perspectives 

      van Etten, J.; Abidin, E.; Arnaud, D.; Brown, E.; Carey, E.; Laporte, M.-L.; López-Noriega, I.; Madriz, B.; Manners, R.; Ortiz-Crespo, B.; Quirós, C.; de Sousa, K.; Teeken, B.; Tufan, H.A.; Ulzen, J.; Valle-Soto, J. (International Potato Center, 2020-12)
      Tricot (triadic comparisons of technologies) is a citizen science approach for testing technology options in their use environments, which is being applied to on-farm testing of crop varieties. Over the last years, important progress has been made on the tricot methodology of which an overview is given. Trial dimensions depend on several factors but tricot implies that plot size is as small as possible to include farmers with small plots (yet avoiding excessive interplot competition) while many ...

    • Critical slope length for soil loss mitigation in maize-bean cropping systems in SW Kenya 

      Koomson, E.; Muoni, T.; Marohn, C.; Nziguheba, G.; Öborn, I.; Cadisch, G. (2020)
      Soil erosion and land fragmentation threaten agricultural production of sub-Saharan African highlands. At our study site in Western Kenya, farm size is mostly < 2 ha, laid out in narrow strips in slope direction and ploughed downhill. Soil conservation measures like hedgerows and green manures can reduce effective slope length for erosion, but compete with crops for space and labour. Knowledge of critical slope length can minimise interventions and trade–offs. Hence, a maize–bean intercrop (MzBn) ...

    • Rural appraisal on the use of Paraquat in Nigeria 

      Udensi, U.E.; International Institute of Tropical Agriculture (International Institute of Tropical Agriculture, 2020)

    • Status of Paraquat in Nigeria: why a ban is necessary 

      Weller, S.; Riches, C.; International Institute of Tropical Agriculture (International Institute of Tropical Agriculture, 2020)

    • The root and tuber crop farming system: diversity, complexity and productivity potential 

      Adjei-Nsiah, S.; Asumugha, G.; Njukwe, E.; Akoroda, M. (Routledge, 2020)
      The root and tuber crop farming system occurs in west and central Africa, bounded on the southern, wetter side by the tree crop farming system and on the northern, drier side by the cereal-root crop mixed farming system. The root and tuber crop farming system occupies an estimated 236 million ha and has an estimated human population of 112 million, of whom over 50 per cent live in rural areas. Poverty is relatively high with about half the rural population earning less than US$1.25 per day. The ...

    • Soil fertility maintenance and nutrient management for agricultural transformation 

      Vanlauwe, B.; Chivenge, P.; Zingore, S. (Routledge, 2020)

    • Phenotyping cowpea for seedling root architecture reveals root phenes important for breeding phosphorus efficient varieties 

      Mohammed, S.B.; Burridge, J.D.; Ishiyaku, M.F.; Boukar, O.; Lynch, J.P. (2021)
      Cowpea (Vigna unguiculata L. Walp.) is a key climate-resilient legume for food security, especially in sub-Saharan Africa. Cowpea yields are limited by edaphic stresses including drought and low phosphorus (P) availability. Identifying genotypes with advantageous root phenotypes can facilitate breeding for improved yield in marginal environments. We evaluated 50 elite genotypes from African and U.S. sources for seedling root architecture and root hair length and density. Significant genotypic ...

    • Modeling growth, development and yield of cassava: a review 

      Moreno-Cadena, L.P.; Hoogenboom, G.; Cock, J.H.; Ramirez-Villegas, J.; Pypers, P.; Kreye, C.; Tariku, M.; Ezui, K.S.; Lopez-Lavalle, L.A.; Asseng, S. (2021-06-15)
      Cassava is an important crop in the developing world. The goal of this study was to review published cassava models (18) for their capability to simulate storage root biomass and to categorize them into static and dynamic models. The majority (14) are dynamic and capture within season growth dynamics. Most (13) of the dynamic models consider environmental factors such as temperature, solar radiation, soil water and nutrient restrictions. More than half (10) have been calibrated for a distinct ...

    • Report on the status of Attieke production in Côte d’Ivoire 

      Alamu, E.O.; Abass, A.; Maziya-Dixon, B.; Diallo, T.A.; Sangodoyin, M.A.; Kolawole, P.; Tran, T.; Awoyale, W.; Kulakow, P.; Parkes E.; Kouame, K.A.; Amani, K.; Appi, A.; Dixon, A. (International Institute of Tropical Agriculture, 2020-05)

    • Virus detection in banana: a laboratory manual 

      Kumar, P.L. (International Institute of Tropical Agriculture, 2010)

    • Youth participation in agriculture and poverty reduction in Nigeria 

      Osabohien, R.; Wiredu, A.; Dontsop-Nguezet, P.; Mignouna, D.; Abdoulaye, T.; Manyong, V.; Bamba, Z.; Awotide, B.A. (2021)
      With data from 683 systematically selected households, the study employed the Heckman two-stage model and the propensity score matching method (PSM) to examine the impact of youth participation in agriculture as a primary occupation on income and poverty in Nigeria. The results indicate that the gender of the youth and their determination to stay in agriculture significantly increases the probability that youth will participate in agriculture as a primary occupation. In addition, youth participation ...

    • Women at the center of cowpea value chain development in Nigeria 

      Akpo, E.; Ojiewo, C.O.; Omoigui, L.O.; Rubyogo, J.C.; Varshney, R.K. (Springer International Publishing, 2020)
      M s. Hadja Salame Shaibu (Fig. 7.1) is a cowpea producer and processor in the Local Government Area of Dawakin Tofa. She grew up in a farming community where crop- livestock integration is a tradition. When she got married few decades ago, Salame continued farming and keeping livestock to support her new family, mainly in sorghum and cowpea production.

    • Impact stories and testimonies from diverse actors in groundnut value chain in Tanzania 

      Akpo, E.; Ojiewo, C.O.; Omoigui, L.O.; Rubyogo, J.C.; Varshney, R.K. (Springer International Publishing, 2020)
      Adamu, a groundnut farmer from Maugura village, Masasi, shared his success story for being involved in TL projects . “I was taught how to grow the seeds, carry out diagnosis, how to store them, among other things. This year, there are some seeds that I have begun putting on the ground so that I can continue conducting research about them. Naliendele Institute gave me about 20 lines and I am working on all of them. In fact, they have not yet been named. I’ve just planted them in plots; from plot ...

    • A brief overview of smallholder farmers' access to seed of improved legume varieties 

      Akpo, E.; Ojiewo, C.O.; Omoigui, L.O.; Rubyogo, J.C.; Varshney, R.K. (Springer International Publishing, 2020)
      For decades, the vast majority of smallholder farmers in developing countries, mainly sub-Saharan Africa (SSA) and to some extent South Asia (SA), heavily rely on non-improved and auto-saved variety seed, accounting for about 80% of their material used for planting. Though the seed use figures by farmers vary from one region to another, with West Africa showing the lowest rate of improved seed use (below 20%) and South Asia with much higher rate (up to 70%), the overall situation looks less ...

    • Breakthroughs in groundnut production communities in Nigeria 

      Akpo, E.; Ojiewo, C.O.; Omoigui, L.O.; Rubyogo, J.C.; Varshney, R.K. (Springer International Publishing, 2020)
      Mrs. Hadja Talatu Idrissa (Fig. 6.1), a community women leader, is the chairperson of the Bunkure women group that is active in groundnut production and oil processing. The group which counts 25 members joined the TLIII project family 4 years ago. They started growing a small seed pack of 5 kg in their community farmland. “It was the harvest of this seed pack that we revolved and planted in a bigger farm plot in the following year,” reported Mrs. Hadja.

    • Rolling out climate smart cocoa through public-private partnership in Ghana: a framework highlighting the step-by-step procedure towards climate smart cocoa finance in Ghana 

      Dalaa, M.; Kofituo, R.K.; Asare, R. (International Institute of Tropical Agriculture, 2020)
      The cocoa industry has been the mainstay of the Ghanaian economy over the years through the provision of revenues from foreign exchange earnings and the generation of employment for farmers who are mainly small holders. Climate change is a phenomenon that has been taking place throughout history but over the last century it has accelerated and scientists believe it is increasingly due to human activities (Cook et al, 2016). The climate in Ghana has likewise been affected and it is having an impact ...

    • Rural youth in southern Nigeria: fractured lives and ambitious futures 

      Crossouard, B.; Dunne, M.; Szyp, C.; Madu, T.; Teeken, B. (2021)
      This article draws on recent research (2017–20) into the livelihoods and imagined futures of rural youth in four communities in southern Nigeria. The research involved observations, sex-segregated focus group discussions and individual interviews. Taking up insights from sociologists of education and work, our analysis shows how rural youth simultaneously navigated schooling, farming, low-paid vocational work and family obligations in ways that were highly gendered. We show the gulf between youth’s ...