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Establishing balanced nutrient requirements for maize (Zea mays L.) in the Northern Nigerian Savanna is paramount to develop site-specific fertilizer recommendations to increase maize yield, profits of farmers and avoid negative environmental impacts of fertilizer use. The model QUEFTS (QUantitat...


Shehu, B.M.Lawan, B.A.Jibrin, J.M.Kamara, A.Y.Mohammed, I.B.Rurinda, J.Zingore, S.Craufurd, P.Vanlauwe, BernardAdam, A.M.Merckx, R.[Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model]Balanced nutrient requirements for maize in the northern Nigerian savanna: parameterization and validation of QUEFTS model

The effects of burning, incorporation and surface mulching after one year of natural regrowth (NF) and Pueraria cover crop fallows on soil P fractions and maize and cassava yields were assessed. Data were collected between 1998 and 2000 as part of an on-going long-term fallow management trial est...


Tian, G.Kolawole, G.O.Tijani-Eniola, H.[Phosphorus fractions in fallow systems of West Africa: effect of residue management]Phosphorus fractions in fallow systems of West Africa: effect of residue management

To date, several viruses of different genera have been reported to infect yam (Dioscorea spp.). The full diversity of viruses infecting yam, however, remains to be explored. High-throughput sequencing (HTS) methods are increasingly being used in the discovery of new plant viral genomes. In this s...


Silva, G.Bömer, M.Rathnayake, A.I.Sewe, S.O.Visendi, P.Oyekanmi, J.O.Quain, M.D.Akomeah, B.Kumar, P.L.Seal, S.E.[Molecular characterization of a new virus species identified in yam (Dioscorea spp.) by high-throughput sequencing]Molecular characterization of a new virus species identified in yam (Dioscorea spp.) by high-throughput sequencing

The adaptability of cassava to low fertile and marginal soils facilitates its production in subsistent agriculture. As a result, smallholder farmers rarely apply fertilizers. The current yield gap is therefore very large, calling for application of fertilizers and soil amendments to improve its p...


Aliyu, I.A.Yusuf, A.A.Uyovbisere, E.O.Masso, C.Sanders, I.R.[Effect of co-application of phosphorus fertilizer and in vitro-produced mycorrhizal fungal inoculants on yield and leaf nutrient concentration of cassava]Effect of co-application of phosphorus fertilizer and in vitro-produced mycorrhizal fungal inoculants on yield and leaf nutrient concentration of cassava

Drought and high temperature are two major factors limiting maize productivity in sub-Saharan Africa. An increase in temperature above 30 °C reduces yield by 1% under optimal rain-fed condition and by 1.7% under drought stress (DS) and up to 40% under combined drought and heat stress (DSHTS). App...


Meseka, S.Menkir, A.Bossey, B.Mengesha Abera, W.[Performance assessment of drought tolerant maize hybrids under combined drought and heat stress]Performance assessment of drought tolerant maize hybrids under combined drought and heat stress

Greenhouse and field studies were conducted to determine the effect of earthworm casts on the production of maize and cowpea. In pot experiments with mixtures of soil and casts, shoot and root dry matter (OM) of maize and cowpea increased with increasing proportion of casts. Shoot OM of cowpea an...


Asawalam, D.O.Hauser, S.[Effects of earthworm casts on crop production]Effects of earthworm casts on crop production

This study identified gender-based constraints affecting the production, processing and marketing of biofortified cassava in two states in Nigeria, using a mixed methods approach. The study identified major differences between the two study sites (Benue and Oyo). The scale of production of biofor...


Olaosebikana, OlamideAbdulrazaq, BelloOwoade, DurodolaOgunade, AdedayoAina, OlufemiIlona, PaulMuheebwa, AdelineTeeken, BélaIluebbey, PeterKulakow, PeterBakare, MoshoodParkes, Elizabeth[Gender-based constraints affecting biofortified cassava production, processing and marketing among men and women adopters in Oyo and Benue States, Nigeria]Gender-based constraints affecting biofortified cassava production, processing and marketing among men and women adopters in Oyo and Benue States, Nigeria

Diffusion of improved technologies among small-scale farmers, especially where formal methods and market mechanisms are inefficient, can be enhanced through the participation of farmers. Unfortunately, formal methods of disseminating improved seed in most African countries have not taken advantag...


Kormawa, P.M.Ezedinma, C.Singh, B.[Factors influencing farmer-to-farmer transfer of an improved cowpea variety in Kano State, Nigeria]Factors influencing farmer-to-farmer transfer of an improved cowpea variety in Kano State, Nigeria

Pindar, H.Kamai, N.Kanampiu, F.Kamara, A.Y.[Handbook on value addition on grain legume processing of soybean, cowpea, and groundnut for smallholder farmers in Borno State]Handbook on value addition on grain legume processing of soybean, cowpea, and groundnut for smallholder farmers in Borno State

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