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Inheritance patterns and genome-wide association study of tropical early-maturing maize inbred lines under striga infestation and drought stress environments
(Obafemi Awolowo University, 2021)This study determined the gene action controlling grain yield and other agronomic traits among newly-developed early-maturing maize inbred lines under drought stress, Striga infestation, optimal conditions and across research environments; examined the combining ability of the early maize inbred lines under each and across research environments; classified the inbred lines into heterotic groups using DArTseq (Diversity Arrays Technology sequencing) markers and combining ability effects methods and ... -
Effective communication for disseminating soil and water management practices to bring about sustainable smallholder agriculture in Tanzania: case study of Manyara and Dodoma regions
(Wageningen University and Research Center, 2019-05)This study investigated effective communication for disseminating soil and water management (SWM) practices for sustainable smallholder agriculture. Higher uncertainties in precipitation and land degradation are potentially the most limiting reasons for poor performance of rainfed agricultural sectors in Tanzania. Despite the increased focus on sustainable intensification of African agriculture and an increase of agricultural innovations with potential to alleviate these, adoption by smallholder ... -
Title Open Data Kit (ODK) in crop farming: an introduction of mobile data collection methods in seed yam tracking in Ibadan, Nigeria
(2020)The purpose of this paper is to illustrate the importance of applying open-source technologies for mobile-based data collection for real-time tracking of seed yam (Dioscorea rotundata and Dioscorea alata) production. Seed yam data in Nigeria have been predominantly collected using field notebooks in the past, which were subsequently entered into a Microsoft Excel spreadsheet or Access database for analysis and reposition. Relevant areas of weakness within the current data systems include time delay ... -
The quality of Cocoa Pod Husk Biochar produced with the "Kon-tiki" kiln technology, and its effect as a soil enhancer on the growth rate of cocoa seedlings
(Norwagien University of Life Sciences, 2021)A study was conducted to investigate the potential of cocoa pod husk as feedstock for biochar production using the “Kon-tiki” kiln. The effect of cocoa pod husk biochar (CPHB) as a soil enhancer, was tested in particular with respect to the soil’s capacity to retain moisture and nutrients, and their consequences for the growth rate of cocoa seedling on two soil types. The resultant CPHB biochar was applied on two soil types from Ghana, Acherensua (sandy loam and near neutral) soil and Ayinase ... -
Assessment of some high ratio propagation technologies for quality seed yam tuber production in Dioscorea alata L. and Dioscorea rotundata Poir
(University of Ibadan, 2021-10)Edible yams are widely cultivated staple food crops in the tropics, but their production is constrained by low multiplication ratio, which results in short supply of Seed Yam Tubers (SYT). The use of High-ratio Propagation Technologies (HrPT) could enhance quality and quantity of SYT. However, limited information is available on the use of HrPT and the amenability of yam varieties to HrPT for SYT production. In this study, the uses of some HrPT for quality SYT production in Dioscorea alata and ... -
Morphological characterization of cacao cultivars in different socio-ecological settings of Ghana
(Georg-August-Universitat Gottingen, 2022-07-15)Knowledge of Theobroma cacao morphological variability provides the foundation for the utilization and conservation of genetic resources in Ghana. This study concentrated on cacao varieties, varietal richness and diversity maintained on farmers` fields. The objectives of the study were (1) to assess varietal richness per farm and the level of homozygosity of cacao cultivars on farmers’ fields through morphological analysis and farm management. (2) To identify existing cacao cultivars in the ... -
Tephritid fruit fly species composition, seasonality, and fruit infestations in two central African agro-ecological zones
(2022-11-13)Bactrocera dorsalis and several Africa-native Ceratitis species are serious constraints to fruit production in sub-Saharan Africa. A long-term trapping and fruit collection study was conducted (2011–2016) in two contrasting agro-ecological zones (AEZs) of Cameroon to determine fruit fly species composition, seasonality, attraction to various lures and baits, and fruit infestation levels. Ten tephritid species from genera Bactrocera, Ceratitis, Dacus, and Perilampsis were captured in traps. Bactrocera ... -
Evaluating the heterogeneous impacts of adoption of climate-smart agricultural technologies on rural households' welfare in Mali
(2022-11-04)Climate change is negatively affecting agricultural production in the Sahel region. Climate-Smart Agricultural Technologies (CSATs) are disseminated to reduce these negative effects, and particularly those on resource-poor farm households. This article investigates the distributional impacts of the adoption of CSAT on-farm households’ welfare using a dataset that covers four regions, 32 communes, 320 villages, and 2240 households in Mali. Using an instrumental variable quantile treatment effects ... -
Farmers' credit access in the Democratic Republic of Congo: empirical evidence from youth tomato farmers in Ruzizi plain in south Kivu
(2022)This article assesses the opinions of youth tomato growers on the accessibility of agricultural credit and factors that influence the accessibility in the Democratic Republic of the Congo (DRC). Data originated from a household survey for the 2019/2020 farming season. We interviewed 218 youth tomato growers from 6 horticulture production zones in the South-Kivu, eastern DRC. The result reveals a low rate of 20.6% on accessing agricultural credit among tomato growers. The topmost nature of agricultural ... -
Comparative analysis of variation in African Bambara groundnut [Vigna subterranea (L) Verdc.] landraces assessed through seed traits
(2022-11)Bambara groundnut [Vigna subterranea (L.) Verdc.] originated from the African continent and plays social-economic roles in regions where it is consumed. This study examined 297 landraces of African Bambara groundnut from four African regions (West, Central, East, and Southern) to estimate the extent of diversity in each population, identify useful seed traits for differentiation in the population and estimate association among seed quantitative traits using eight qualitative and seven quantitative ... -
Cassava-maize intercropping systems in southern Nigeria: radiation use efficiency, soil moisture dynamics, and yields of component crops
(2022-07)Efficient utilization of incident solar radiation and rainwater conservation in rain-fed smallholder cropping systems require the development and adoption of cropping systems with high resource use efficiency. Due to the popularity of cassava-maize intercropping and the food security and economic importance of both crops in Nigeria, we investigated options to improve interception of photosynthetically active radiation (IPAR), radiation use efficiency (RUE), soil moisture retention, and yields of ... -
Understanding changes in cassava root dry matter yield by different planting dates, crop ages at harvest, fertilizer application and varieties
(2022-12-23)Cassava is a perennial crop that can adapt to periods of drought at different times in a growing season, which permits scheduling planting and harvest to develop production systems supplying roots continuously. However, farmers plant and harvest cassava at the onset of rains which creates glut and results in unattractive root prices. Thus, farmers need to understand how cassava varieties respond to different planting dates and crop ages at harvest to be able to use opportunities in income generation ... -
Effects of expanding cassava planting and harvesting windows on root yield, starch content and revenue in southwestern Nigeria
(2022-10-01)Cassava (Manihot esculenta Crantz) is an important staple crop in Nigeria. It provides approximately 80 % of the caloric intake in Nigeria. High starch content and fresh root yields are important for the commercialization of cassava. Cassava is a perennial crop, and it can be produced all year round. However, cassava fresh root yield and starch content are strongly influenced by environmental conditions such as rainfall. Therefore, it is important to identify planting and harvest periods to attain ... -
Simulating potential yield of rainfed soybean in northeast Nigeria
(2023-01)We used the CROPGRO-Soybean model to simulate the production potential of rainfed soybean in northeast Nigeria. Data from ten soybean experiments conducted under optimal conditions in 2016–2018 at Kano and Dambatta in the Sudan savanna (SS) agroecological zone were used to determine the cultivar coefficients and calibrate the model for the varieties TGX 1448–2E and TGX1951–3 F. The model was evaluated with data from four phosphorous response trials conducted at Zaria and Doguwa in the northern ... -
Leveraging digital tools and crowdsourcing approaches to generate high-frequency data for diet quality monitoring at population scale in Rwanda
(2022-01-07)Diet quality is a critical determinant of human health and increasingly serves as a key indicator for food system sustainability. However, data on diets are limited, scattered, often project-dependent, and current data collection systems do not support high-frequency or consistent data flows. We piloted in Rwanda a data collection system, powered by the principles of citizen science, to acquire high frequency data on diets. The system was deployed through an unstructured supplementary service data ... -
A framework to understand the social impacts of agricultural trade
(2022-08-30)While international trade in agricultural commodities can spur economic development especially where governance is strong, there are also concerns about the local impacts of commodity production and their distribution. Previous frameworks have primarily focused on trade effects on environmental conditions in production regions, as well as economic growth and food security. Instead, we develop a conceptual framework for understanding the impact of agricultural trade on multidimensional wellbeing ... -
Access to finance and rural youth entrepreneurship in Benin: Is there a gender gap?
(2022-01-27)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, ... -
Genetic diversity in cowpea [Vigna unguiculata (L.) Walp.] accessions collected from Togo
(Pan African University, 2021-11)Cowpea is one of the most widely grown legumes in Togo for its grains and leaves, which are used both as food and feed. Despite its importance in the nutrition and economic life of the people, bulk of the varieties grown in Togo are landraces. Genetic improvement of crops requires the presence of heritable genetic variation. However, there is hardly any information on the extent of variability among cultivated cowpea in Togo. This study was carried out to assess the phenotypic and molecular diversity ...
