IITA Bibliography System: Recent submissions

Now showing items 421-440 of 7933

    • Combining ability of selected soybean [Glycine max (L.) Merrill] parental lines 

      Otusanya, G.O.; Chigeza, G.; Chander, S.; Abebe, A.T.; Sobowale, O.O.; Ojo, D.K.; Akoroda, M. (2022-02)
      Background: The success of hybridization programme depends on the combining ability of parental lines. Methods: Seven soybean genotypes and all their partial diallel crosses in the F2 generation were evaluated in a randomized complete block design at two locations in Nigeria, during the 2017-2018 growing season. Result: Analysis of variance showed that both environments and genotypes were significantly different for all measured traits. The genotype TGx 1988-5F was the best general combiner for ...

    • A genome-wide scan divulges key Loci involved in resistance to aphids (Aphis craccivora) in cowpea (Vigna unguiculata) 

      Ongom, P.O.; Togola, A.; Fatokun, C.; Boukar, O. (2022-11-01)
      Cowpea aphids (Aphis craccivora Koch) double as a direct damaging pest and a virus vector to cowpea, threatening the economic yield of the crop. Given the multiple ecotypes, different alleles have been implicated in aphid resistance, necessitating the identification of key genes involved. The present study implemented a genome-wide scan using 365 cowpea mini-core accessions to decipher loci involved in resistance to aphid ecotype from Kano, Nigeria. Accessions were artificially inoculated with A. ...

    • Early detection of plant virus infection using multispectral imaging and spatial-spectral machine learning 

      Peng, Y.; Dallas, M.M.; Ascencio‑Ibanez, J.T.; Hoyer, J.S.; Legg, J.; Hanley‑Bowdoin, L.; Grieve, B.; Yin, H. (2022-02-24)
      Cassava brown streak disease (CBSD) is an emerging viral disease that can greatly reduce cassava productivity, while causing only mild aerial symptoms that develop late in infection. Early detection of CBSD enables better crop management and intervention. Current techniques require laboratory equipment and are labour intensive and often inaccurate. We have developed a handheld active multispectral imaging (A-MSI) device combined with machine learning for early detection of CBSD in real-time. The ...

    • Assessing nitrogen flows and greenhouse gas emissions in low input cropping systems of Lake Victoria Basin 

      Winnie, N. (Kenyatta University, 2022-10)
      Too little nitrogen (N) is a threat to cropping systems and soil fertility in sub-Saharan Africa (SSA). Nitrogen budgets (NB) and nitrogen use efficiency (NUE) are critical tools for assessing N dynamics in agriculture and have received little or no attention in the region. The study aimed to assess key N performance indicators at field and farm level based on N use scenarios and help to inform policy on formulating relevant decision and practices to enhance N management for improved crop productivity ...

    • Effects of potassium and magnesium on cassava vegetative and root yield 

      Sanginga, A.D. (University of Eldoret, 2022-10)
      Cassava (Manihot esculentum) has a high potassium (K) demand and its application does not generally increase yields. Potassium may have antagonistic effects on magnesium (Mg) leading to deficiency of Mg in the soil. The objectives of this study were to (I) evaluate the vegetative growth of cassava under different K and Mg fertilizer combinations and (ii) determine the effects of K and Mg fertilizer on cassava storage root yield. A 2-cropping season experiment was conducted in a randomized complete ...

    • Assessing the potential of the ECMWF-S5 satellite-based seasonal rainfall forecasts for improved crop farming in Ghana 

      Kwabena, O. (Kwame Nkrumah University of Science and Technology, 2022-09)
      Forecasts of seasonal rainfall are important for the agricultural sector, particularly in nations where rain-fed agriculture is predominant. A robust agricultural system is made possible by the ability to predict seasonal rainfall with accuracy and precision. Due to the limited and sparse availability of gauge data, both satellite-based and model seasonal rainfall forecasts are beneficial for predicting seasonal rainfall. While seasonal rainfall forecasts based on models and satellites complement ...

    • Strengthening cowpea seed systems to increase the productivity of smallholder farmers in west Africa 

      Omoigui, L.O.; Kamara, A.; Iorlamen, T.; Muhammed, I.; Ojiewo, C.O. (IInternational Institute of Tropical Agriculture, 2023)

    • The potential of valuation 

      Termansen, M.; Jacobs, S.; Dendoncker, N.; Ghazi, H.; Gundimeda, H.; Huambachano, N.; Lee, H.; Mukherjee, N.; Nemoga, G.R.; Ngouhouo-Poufoun, J.; Palomo, I.; Pandit, N.R.; Schaafsma, M.; Choi, A.; Filyushkina, A.; Hernandez-Blanco, M.; Contreras, V.; Gonzalez-Jimenez, D. (IPBES, 2022-10)

    • ATA-RDC: Rapport bimensuel d'avancement: 16-31 October 2022 

      ATA-RDC; Ministere de L'Agriculture du Congo; IITA (IInternational Institute of Tropical Agriculture, 2022-10)

    • Sustainable soyabean production in northern Ghana: training manual on GAPs for sustainable intensification of soyabean production for agricultural extension agents 

      Kermah, M.; Adjei-Nsiah, S.; Ofosu, A. (SSPiNG Project, 2022-02)

    • Eliminating hunger: yam for improved income and food security in west Africa 

      Aighewi, B.; Maroya, N.; Asiedu, R.; Mignouna, D.; Balogun, M.; Kumar, P.L. (MPDI, 2023-11)

    • Manual for seed yam production in hydroponics system 

      Balogun, M.; Maroya, N.; Aighewi, B.; Mignouna, D.; Nelson, M.; Nickerson, J. (IInternational Institute of Tropical Agriculture, 2021)

    • Breeder seed yam tuber production using temporary immersion bioreactors 

      Balogun, M.; Maroya, N.; Taiwo, J.; Ossai, C.; Ajayi, A.; Gbadegesin, M.; Kumar, P.L.; Pelemo, O.; Aighewi, B.; Mignouna, D.; Asiedu, R. (IInternational Institute of Tropical Agriculture, 2020-02)

    • Farmers' willingness to invest in mechanized maize shelling and potential financial benefits: evidence from Tanzania 

      Kotu, B.H.; Manda, J.; Mutungi, C.; Fischer, G.; Gaspar, A. (2023)
      Sub-Saharan Africa has the least mechanized agriculture in the world due to various reasons including low effective demand at farm level, low policy attention, and ineffective mechanization strategies. However, the situation has changed since recently in favor of mechanization while limited empirical evidence is available on how mechanization can be enhanced among smallholder farmers. In this study, we explore farmers' willingness to invest in mechanization services by considering the group business ...

    • Maize productivity and household welfare impacts of mobile money usage in Tanzania 

      Kilombele, H.; Feleke, S.; Abdoulaye, T.; Cole, S.M.; Sekabira, H.; Manyong, V. (2023-01-31)
      This study examined the determinants and impacts of mobile money (MM) usage on maize productivity and poverty likelihood (i.e., the probability of a household falling below the international poverty line at USD 1.9 per capita per day) in the Mbeya Region, Tanzania. The analysis was conducted using the endogenous switching regression (ESR) model on data from a random sample of 1310 households selected from seven districts in the region. Results of the ESR estimation show that MM usage is strongly ...

    • Diallel analysis of soybean (Glycine max L.) for biomass yield and root characteristics under low phosphorus soil conditions in western Ethiopia 

      Abebe, A.T.; Adewale, S.; Chigeza, G.; Derera, J. (2023)
      Combining ability studies under low soil P conditions provides useful information on the inheritance of important traits to improve soybean for low P tolerance. The study aimed at determining the combining ability and gene actions of biomass yield and root traits in soybean under low phosphorus conditions. Nine parental genotypes and their 36 half diallel F2/F3 progenies were evaluated at two locations in Ethiopia on soils of low P availability. Highly significant (P<0.01) general combining ability ...

    • Elaborating institutional arrangements to better enhance sustainable crop intensification in Uganda: a farmers’ perspective 

      Pali, P.N.; Tebeka, Y.A.; Schut, M.; Mangheni, M.N.; Wairegi, L.W.; Manyong, V.; Van Asten, P.J.A. (2023-02)
      Weak and inefficient institutional arrangements have been identified as a major cause of the slow pace of agricultural growth in developing countries. Institutions – the humanly devised constraints that shape human interaction – play a significant role in Sustainable Crop Intensification (SCI) in Uganda. This study uses farmers' perceptions to assess institutions and their roles in SCI. We collected data from 135 rice and potato-producing households in Eastern and Southwestern regions of Uganda ...

    • Potential of Cameroon-indigenous isolates of the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae as microbial control agents of the flea beetle Nisotra uniformis 

      Niyibizi, I.A.B.; Hanna, R.; Kekeunou, S.; Membang, G.; Fiaboe, K.; Mahot, H.C.; Abang, A.F.; Kumar, P.L.; Fotso Kuate, A. (2023)
      The flea beetle Nisotra uniformis Jacoby is a widespread pest of malvaceous crops for which synthetic chemical insecticides remain the principal control tool, particularly in sub-Saharan Africa. With the ultimate aim of developing a microbial alternative for N. uniformis control, we conducted laboratory experiments (25 ± 1°C; 70 - 80% RH) to evaluate the biological attributes of three Cameroonian isolates of the entomopathogenic fungi Beauveria bassiana (Balsamo-Crivelli) Vuillemin and Metarhizium ...

    • Gender-disaggregated consumer testing and descriptive sensory analysis of local and new yam varieties 

      Effah-Manu, L.; Wireko-Manu, F.D.; Agbenorhevi, J.K.; Maziya-Dixon, B.; Oduro, I. (2023-01-25)
      Gender-disaggregated sensory evaluation has become an essential element that could enhance breeding activities by increasing the adoption of new varieties. The effect of age, sex and geographical location on descriptor preferences for boiled and pounded yam were studied using descriptive and consumer testing. Attributes with definitions and measurement scales were used to generate lexicons for boiled and pounded yam. Analytical tools employed for the inferential statistics were the independent ...

    • Spatial modelling indicates Striga seedbank density dependence on rainfall and soil traits in the savannas of northern Nigeria 

      Aliyu, K.T.; Lado, A.; Hussaini, M.A.; Kamara, A.; Musa, S.A.; Dawaki, M.U.; Suleiman, M.S.; Bello, T.T.; Fagge, A.; Isa, H.M.; Ibrahim, H. (2023-02-13)
      Striga is one of most notorious weeds devastating crop production in the dry savannas of northern Nigeria. The weed attacks most cultivated cereals and legumes with crop losses as high as 100% when no control measure is employed. Studies conducted in the dry savannas of Nigeria indicated that Striga seedbank is strongly related to soil and climate properties. This study was conducted to model Striga hermonthica seedbank zones in the dry savannas of Nigeria based on soil and climate properties of ...