A5004905948- Rice Cultivation and Yield Improvement
- Genetics and Plant Breeding
- Agricultural pest management studies
- Legume Nitrogen Fixing Symbiosis
- Agronomic Practices and Intercropping Systems
- Plant Parasitism and Resistance
- Plant Micronutrient Interactions and Effects
- Cassava research and cyanide
- Agricultural Innovations and Practices
- Wheat and Barley Genetics and Pathology
- Genetic Mapping and Diversity in Plants and Animals
- GABA and Rice Research
- Weed Control and Herbicide Applications
- Agriculture and Rural Development Research
- Mycotoxins in Agriculture and Food
- Soybean genetics and cultivation
- Research Data Management Practices
- Climate change impacts on agriculture
- Plant and animal studies
- Agricultural Systems and Practices
- Crop Yield and Soil Fertility
- Seed and Plant Biochemistry
- Plant responses to water stress
- Biomedical Text Mining and Ontologies
- Agricultural Science and Fertilization
International Institute of Tropical Agriculture
2020-2025
International Institute of Tropical Agriculture
2020-2024
University of Greenwich
2022
Natural Resources Institute
2022
Africa Rice Center
2013-2021
International Institute of Tropical Agriculture
2020
Agrhymet Regional Centre
2015
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2007
Centre d'Etude Regional pour l'Amelioration de l'Adaptation a la Secheresse
2006
If future rice production is to contribute food security for the increasing population of sub-Saharan Africa (SSA), effective strategies are needed control weeds, crop's fiercest competitors resources. To gain better insights into farmers' access to, and use of, herbicides as part weed strategies, surveys were conducted in key locations across SSA. Farm held among 1965 farmers 20 countries collect data on yields, farmer's management practices, herbicide use, frequencies interventions...
Heterogeneous and multidisciplinary data generated by research on sustainable global agriculture agrifood systems requires quality labeling or annotation in order to be interoperable. As recommended the FAIR principles, data, labels, metadata must use controlled vocabularies ontologies that are popular knowledge domain commonly used community. Despite existence of robust Life Sciences, there is currently no comprehensive full set for across agricultural disciplines. In this paper, we discuss...
The parasitic weeds Striga asiatica and hermonthica cause devastating yield losses to upland rice in Africa. Little is known about genetic variation host resistance tolerance across genotypes, relation virulence differences species ecotypes. Diverse genotypes were phenotyped for the above traits S. asiatica- (Tanzania) hermonthica-infested fields (Kenya Uganda) under controlled conditions. New with either ecotype-specific or broad-spectrum identified. Resistance identified field was...
The parasitic weeds Striga asiatica and hermonthica cause high yield losses in rain-fed upland rice Africa. Two resistance classes (pre- post-attachment) several resistant genotypes have been identified among NERICA (New Rice for Africa) cultivars under laboratory conditions (in vitro) previously. However, little is known about expression of this field conditions. Here we investigated (1) whether exhibited controlled would express representative Striga-infested conditions, (2) achieve...
The phrase "biggest bang for a buck" is associated with the policy making question that governments and development agencies face: "Where which crops should receive highest priority improving local global food supply?". A first step of prioritisation to identify region x crop combinations high impact can be anticipated. We developed new method this exercise applied it data from Global Yield Gap Water Productivity Atlas (GYGA). Our distinguishes between two objectives (humanitarian economic)...
Abstract The demand for rice in Eastern and Southern Africa is rapidly increasing because of changes consumer preferences urbanization. However, local production lags behind consumption, mainly due to low yield levels. In order set priorities research development aimed at improving productivity, there a need characterize the environments, quantify gaps—that is, difference between average on‐farm best farmers’ yield—and identify causes gaps. Such information will help identifying targeting...
Abstract The development of improved cultivars requires establishing multi‐environment trials (METs) to evaluate their performance under a wide range environmental conditions. However, the high phenotyping costs often limit capacity genotypes in all target environments. Our main objective was explore potential implementing sparse testing cassava breeding programs reduce cost METs. population used this study consisted 435 evaluated five environments Nigeria for dry matter (dm) and fresh root...
Cassava brown streak disease (CBSD) remains the most severe threat to cassava production in Great Lakes region and Southern Africa. Screening for virus resistance by subjecting high pressure epidemic zone (hotspots) is a common but lengthy process because of unpredictable erratic infections requiring multiple seasons evaluation. This study investigated feasibility graft-infections provide highly controlled infection that robust reproducible select eliminate susceptible at early stages...
Background/Objectives: Cowpea is a major source of dietary protein and plays key role in sustainable agriculture across sub-Saharan Africa (SSA), Asia, Latin America. Research efforts have focused mainly on enhancing productivity through higher yield resistance to biotic abiotic stresses cowpea. Understanding the genetic basis associated agronomic traits crucial for improving crop productivity. This study aims identify quantitative trait loci (QTL) with grain related cowpea under regular...
In sub-Saharan Africa (SSA), maize ( Zea mays L.) is both a cash crop and an important staple crop. However, Striga hermonthica infection constrains its production productivity. A total of 159 hybrids from 21 international trials were evaluated under -infested (STRINF) non-infested (STRNON) conditions at Mokwa Abuja, Nigeria, 2010 to 2021. The data used (i) determine the genetic enhancements in grain yield adaptive traits (ii) assess repeatability identification promising hybrids....
The objective of this study was to assess the reliability pot-based screening method for iron (Fe) toxicity tolerance in rice using soils from hot spots. Five lowland varieties with known reaction Fe were grown pots a screen house three seasons. Fe-toxic two spot fields – Edozighi, Nigeria and Niaouli, Benin used soil Africa Rice Center (AfricaRice) experimental farm, Cotonou, included as control. Leaf bronzing score (LBS) determined at different stages, grain yield maturity. Heritability...
Genetic gain has been proposed as a quantifiable key performance indicator that can be used to monitor breeding programs' effectiveness. The cowpea program at the International Institute of Tropical Agriculture (IITA) developed and released improved varieties in 70 countries globally. To quantify genetic changes grain yield related traits, we exploited IITA historical multi-environment trials (METs) advanced trial (AYT) data from 2010 2022. assessment targeted short duration (SD), medium...
More than 60% of phosphorus (P) taken up by rice (Oryza spp) is accumulated in the grains at harvest and hence exported from fields, leading to a continuous removal P. If P removed fields not replaced inputs then soil stocks decline, with consequences for subsequent crops. Breeding genotypes low concentration could be strategy reduce maintenance fertilizer needs slow depletion input systems. This study aimed assess variation grain concentrations among across diverse environments evaluate...
Abstract On upland soils in tropical Africa, common production constraints of rice and maize on smallholder farms are poor soil fertility—resulting from erosion nutrient depletion—and infestation by witchweeds ( Striga spp.). In Madagascar where these crops often grown rotation, combining legume cover with no-till crop residue mulching—labelled conservation agriculture (CA)—may address problems. Previously, it was shown that CA practices contribute to steep reductions asiatica infection. the...
Abstract Salt stress is a menace to rice production and threat food security worldwide. We evaluated 308 F 4 families from Sahel 317/Madina Koyo for tolerance salt at the early seedling stage. To better understand genomic regions controlling in population, we genotyped progenies two parents using single nucleotide polymorphism (SNP) markers regressed genotypic data on their phenotype detect QTLs. An average reduction of 63.4% was observed all fitness-related traits among families. A total 46...
Drought represents a significant production challenge to maize farmers in West and Central Africa, causing substantial economic losses. Breeders at the International Institute of Tropical Agriculture have therefore been developing drought-tolerant varieties attain high grain yields rainfed zones. The present review provides historical overview approaches used progress made hybrids over years. shift from wide area testing approach, use managed screening sites, precisely control intensity,...
Abstract Regular measurement of realized genetic gain allows plant breeders to assess and review the effectiveness their strategies, allocate resources efficiently, make informed decisions throughout breeding process. Realized estimation requires separating trends from nongenetic using linear mixed model (LMM) on historical multi‐environment trial data. The LMM, accounting for year effect, experimental designs, heterogeneous residual variances, estimates best unbiased estimators genotypes...