Christopher Ngosong

Christopher Ngosong
University of Buea · Agronomic and Applied Molecular Sciences

Dr. rer. nat.

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36
Publications
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452
Citations

Publications

Publications (36)
Article
Full-text available
Maize (Zea mays L.) production contributes to food security and income generation for many farmers, but productivity is constrained by soil infertility, with potassium (K) deficiency partly accounting for the huge gap between potential and actual yields. This is resolved with K fertilizer input that require appropriate K rates. This study was aimed...
Article
Full-text available
Soil nitrogen (N) supply is essential in influencing plant functional traits and regulating plant morphological and physiological performances. The effects of N on plants can be altered by complex environmental changes. However, conflicting results have been reported on the co-effects of N and climatic variables on plant performance, which may be a...
Article
Maize (Zea mays L.) production contributes to food security and income generation for many farmers, but productivity is constrained by soil infertility, with potassium (K) deficiency partly accounting for the huge gap between potential and actual yields. This is resolved with K fertilizer input that require appropriate K rates. This study was aimed...
Article
Full-text available
Maize (Zea mays L.) production in Africa is threatened by the invasive fall armyworm-FAW (Spodoptera frugiperda), and information on its agro-ecological variation and adaptation of different maize cultivars is scarce. The effect FAW was assessed on three hybrid maize cultivars (PAN-12, PAN-53, CMS-8704) and one Landrace in two agro-ecological zones...
Article
Full-text available
Fall armyworm (FAW) is a polyphagous and voracious pest, destroying maize plants in farms in Cameroon. An annual yield loss is estimated to range from15 to 78%, valued at US$ 2,481 to US$ 6,187 million. With most damage experienced in the mono-cropping system. Maize is the most widely grown cereal crop globally due to its several uses, namely human...
Chapter
The current population dynamics is projected to increase yearly, and expected to challenge the Sustainable Development Goals, especially in relation to food and nutrition security. While the demand for agricultural food products is increasing, the availability of cultivable land is either stable or decreasing due to various environmental factors su...
Article
Full-text available
Soil organic carbon (SOC) mineralization was carried out on soil samples collected from two depths: 0-20 cm and 20-40 cm for all land use (LU) types (grasslands, croplands, natural forest/fallow lands, cocoa/palm plantations , and settlement/agro-forests). Microbiological analyses were carried out by measuring microbial activity in 40 g of dried so...
Article
Full-text available
Tomato (Lycopersicon esculentum L.) production contributes to food and nutrition security, and a lucrative business for many stakeholders. Major stakeholders in the tomato food value chain (TFVC) include farmers, middlemen, wholesalers, retailers, and consumers. Farmers contribute the highest in value addition of tomato but earn the lowest profit (...
Article
Bananas and plantains are important staple crops for many people in developing countries, but these crops are severely affected by biotic constraints that reduce productivity. A major biotic stress is the banana corm borer weevil (C. sordidus) whose larvae eat corm/pseudostem tissues that eventually weaken the plants and cause toppling. To manage t...
Article
Full-text available
African farmers are currently grappling with potential control measures for the invasive fall armyworm (FAW) (Spodoptera frugiperda), which has recently emerged as an important economic pest that is ravaging maize fields across the continent. We evaluated the efficacy of the West African black pepper extract and beans intercropping systems as viabl...
Article
Full-text available
Grain legumes provide dual benefits as a food source and soil fertility or plant nutrition enhancer, but the latter role may be influenced by fertilization regimes. A controlled study was conducted to evaluate the impact of four fertilizer treatments (control-no input, single dose NPK, split dose NPK, and poultry manure) on earthworms and soil fert...
Article
The microbiota in three terrestrial habitats (biological soil crusts – crust, transition zone below – trans, crust-free soil – soil) was studied in 33 temperate forest stands differing in forest management intensity (ForMI). Specific lipid fractions and respective marker fatty acids were used to determine microbial biomass and community structure (...
Article
Full-text available
Smallholder farmers in Cameroon often store seeds from their own-harvest for use in subsequent planting seasons, but they have limited information on appropriate materials for long-term storage of vegetable seeds. Hence, six different materials (sealed aluminium foil sachet, sealed glass bottle, closed plastic cup, sealed paper sachet, sealed polyt...
Article
Full-text available
Spreading banana peduncle residues in banana plantations to enhance soil physicochemical properties is common practice and has also been identified as vector of mealybug re-infestation. Producing biochar from banana peduncle residues could reduce infestation, improve soil fertility and promote plant growth and sequester carbon. Hence this greenhous...
Article
Full-text available
Nitrogen (N) fertilizer is commonly used to improve soil fertility and maize production in Cameroon, but high cost and potential environmental effects have necessitated site-specific N fertilization regimes that are adapted to particular soil and crop types. A field experiment was conducted with five N application rates (control–0, 50, 100, 150, an...
Chapter
Full-text available
Soil is increasingly recognized as an important non-renewable natural asset that should be properly managed to ensure sustainable development. Hence, this review focuses on the assessment of soil health from an agricultural perspective, with emphasis on mulching as a sustainable strategy to improve soil fertility and productivity of arable systems....
Article
Full-text available
Background Considering the potential impact of climate change on the ecology of insect pests, different planting dates and cropping patterns were investigated as farm-level adaption to control insect pests of cabbage and improve productivity. Methods This is a 3 × 4 factorial experiment setup in randomized complete block design including three pla...
Article
Full-text available
From November 2013 to May 2014, the insecticidal properties of detergent-oil (mixture of liquid washing detergent and vegetable oil) emulsions of four plants (Lantana camara, Allium sativum, Coffea arabica, and Jatropha curcas) were tested on the long tailed mealy bugs infesting banana plants in Cameroon. The treatment doses used in the laboratory...
Article
Cattle farmyard manure application is an important tool for maintaining soil fertility in organic agriculture, especially in biodynamic systems. The first objective was to investigate whether application of biodynamic preparations (CMBD treatment) causes positive effects additional to those of composted cattle farmyard manure fertilization (CM trea...
Article
Full-text available
The application of fatty acids (FAs) as biomarkers in food web ecology is based on the concept of dietary routing, i.e., FA assimilation as entire molecule and transfer into consumer tissue with no or minor modification. However, the lack in knowledge in lipid metabolism of the soil fauna hampers the FA trophic marker approach. This study used labe...
Article
Full-text available
Many views, paradigms and concepts have been advocated in recent decades on soil fertility and soil conservation across the globe in order to provide sustainable solutions to the rising food and nutrition insecurity while preserving the natural resource base. Meanwhile, food and nutrition security in Sub-Saharan Africa (SSA) is mainly achieved thro...
Article
Ngosong, C., Halpern, M. T., Whalen, J. K. and Smith, D. L. 2013. Purslane ( Portulaca oleracea L.) has potential for desalinizing greenhouse recirculation water. Can. J. Plant Sci. 93: 961–964. Recirculating fertigation solutions improves the environmental sustainability of hydroponics-based vegetable production in Canada. Purslane is an edible ha...
Article
Full-text available
Agricultural crop production depends upon judicious use of nitrogen (N) fertilizers to sustain yields. Globally, the N recovery rate by crops is about 60%, meaning that the rest of the N applied to agroecosystems is transformed to forms that are not available for crop uptake or are lost to the environment. Considering that part of the soil N suppli...
Article
Full-text available
Biomass estimation of arbuscular mycorrhiza (AM) fungi, widespread plant root symbionts, commonly employs lipid biomarkers, predominantly the fatty acid 16:1ω5. We briefly reviewed the application of this signature fatty acid, followed by a case study comparing biochemical markers with microscopic techniques in an arable soil following a change to...
Article
Compound specific stable isotope analysis (13C/12C ratio of fatty acids) was used to assess the allocation of plant carbon in soil microbiota, and to identify the trophic links to microbial grazers in an arable field with long-term mineral and organic fertilizer amendments. The feeding strategy of two dominant Collembola species, epedaphic Isotoma...
Article
This study investigates an arable field soil with long-term (27 and 28 years) mineral (NPK) and organic (cattle manure, cattle manure with biodynamic preparations) fertilizer amendments at low, medium and high amounts. Arbuscular mycorrhizal (AM) fungi host plant wheat was cultivated in the first vegetation period and non-host amaranth in the secon...
Article
We investigated the Collembola community at an arable field where mineral and organic fertilizers have been applied at low and high rates for 27 years. As food resources for Collembola, the soil microbial community was analyzed using phospholipid fatty acids (PLFAs). A special focus was put on AM fungi, which were estimated by the marker 16:1ω5 in...

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Projects (6)
Project
a. Identify symptoms of disease on cocoyam. b. To isolate and identify the fungal pathogens associated with cocoyam cormels at storage, c. To obtain, through a survey in Fako Division, information on methods of storage, storage problems and their spoilage prevention measures. d. Determine the occurrence, Prevalence, Incidence, Severity and Distribution of these pathogens on Cocoyam cormels in Fako.
Project
To train good citizen scientists on integrated soil fertility management with focus on soil-plant-microbe-insect interactions in legume-based cropping systems involving microbial inoculants and dual-property bioactive plant materials. Thereby, improving crop productivity while preserving the fragile natural resource base.
Project
To produce good quality seeds by priming combinations of plant bioactive materials and beneficial microbes to systematically improve plant nutrition and protection.