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Showing 1 to 20 of 28 for “"Maize yields"”.
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Evolution of Bacillus thuringiensis Maize Yields in South Africa
… benefits of genetically modified (GM) maize in South Africa have been well documented in previous literature. However, concerns about the longevity of these benefits, have been raised following reports of Busseola fusca developing resistance to Bacillus thuringiensis (Bt) maize in South …
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Relationship Between West African monsoon precipitation characteristics and maize yields across Sub-Saharan West Africa
… on the relationship between country-level maize yields and the WAM, particularly through the use of high resolution precipitation estimates to characterize the spatiotemporal variability of the monsoon. Multi-year annual precipitation characteristics of the monsoon such as total …
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Quantifying the effect of fall armyworms on maize yields in a resource constrained economy: A case study in Zambia
… (FAW) is a voracious pest, which has ravaged maize yields in Sub-Saharan Africa since they were first reported in 2016. Their exact impact on maize yields is unclear, with a wide discrepancy in the existing estimates which suffer from potential endogeneity in self-reporting,measurement error …
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The analysis of tropical temperate trough-associated rainfall onsets and their influence on maize yields in the Maize Triangle, South Africa
… that were associated with rainfall onsets in the Maize Triangle, South Africa, were analysed during the period from 1979 to 2018. Maize yields for agricultural regions within the Maize Triangle were also investigated to determine if the association of the above-mentioned variables had any …
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An investigation of the impacts of intra-seasonal rainfall variability on the maize growing season in Limpopo Province, South Africa from 1990-2014
Rain fed maize is an important staple food crop for rural communities in Southern Africa as it plays a major role in ensuring food security and improving livelihoods. Rainfall consistency and intensity is an essential requirement for successful maize growing seasons. The variability of …
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Impacts of Climate Variability and Change on Maize (Zea may) production in Makhuduthamaga Local Municipality, Limpopo Province, South Africa.
… change. The aim of this study was to determine maize producer's vulnerability and assess the impact of climate variability and change on maize production in the Makhuduthamaga Local Municipality, of Limpopo Province, South Africa. Climatic and maize yields data utilized in the study are for the …
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Maize response to fertilizer and fertilizer-use decisions for farmers in Ghana
Current maize yields in Ghana average only one-third of their estimated potential, but this yield gap can be reduced by improving farming practices and growing conditions in Ghana; specifically, yields in Ghana can likely be increased by intensifying the use of fertilizer, other inputs, and …
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Maize streak virus (MSV) diversity in Uganda and the assessment of gene silencing as a tool for development of resistance to MSV
Maize streak virus (MSV: Family Geminiviridae, Genus Mastrevirus) is the causal agent of maize streak disease (MSD) that contributes significantly to low maize yields in Africa, thereby threatening food security of sub-Saharan Africa’s poorest people. In Uganda, MSD has been identified as one of …
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Effects of Cultivation Techniques on Maize Productivity and Soil Properties on Hillslopes in Yunnan Province, China
… have more than doubled, for example mean maize yields have increased from 1.54 to 3.91 t ha-1 from 1960 to 1998. Despite this, food shortages remain major problems. These pressures have also led to intensive cultivation of sloping lands, making China the country with the most serious soil …
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Drought in Southern Africa: structure, characteristics and impacts
… impacts on surface soil moisture, agricultural yields and surface hydrology. In exploring drought characteristics in southern Africa (15-28°S, 22-32°E) monthly satellite datasets and reanalysis models are employed for the period from the austral summer of 1979-80 to that of 2011-12. Drought …
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Studies of Nematodes Associated With Maize, Soybean, and Sunflower in Illinois and the Republic of Zambia
… and 'Hernon 147'), sunflower ('CCA 81') and maize ('MM 603'). Parasitic nematodes identified were Pratylenchus zeae, Helicotylenchus pseudorobustus, Paratrichodorus christiei, Scutellonema brachyurum, Meloidogyne javanica and Tylenchorhynchus n. sp. Significantly higher populations of P. …
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Minimizing the continuous maize penalty through intense management
As maize prices escalate with increasing demand for grain resulting from recent legislation mandating renewable fuel production, more Midwest farmers are interested in producing maize continuously. Increasing or maintaining maize yield levels becomes a challenge in continuous maize systems due to …
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Changes in soil properties and their effects on maize productivity following sesbania and pigeon pea improved fallow system in Eastern Zambia
… of 1-3 years have a potential to increase maize yield without additional inorganic nitrogen fertilizers. The mechanisms responsible for improved maize yield are partially understood. therefore the objective of the study were (1) to quantify some changes in soil properties that may be …
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Modelling climate change impacts on maize and soybean yields in Central and Eastern Provinces of Zambia
… in specific areas operate. Through two major maize and soybean producing provinces in Zambia, this study enhances the understanding of district production variations under location specific climate change. This study aims at providing a climate change impact assessment in the light of three …
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Crop Yields Response To Conservation Farming And Spatial-Temporal Effects In Zambia
We examined crop yields along a wide environmental gradient and spatial dynamics in soil organic matter in response to conservation farming (CF) in Zambia. Maize yields from farmer managed CF and traditional farming (TF) were not significantly different with over 280 on-farm trials with varying …
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Vulnerability and Adaptation to Drought Hazards in Mopani District Municipality, South Africa: Towards Disaster Risk Reduction
… Index whilst vegetation anomaly maps, maize yields and dam level data were used to analyse the impacts of drought across the district. Levels of vulnerability to drought were determined using the Household Vulnerability Index. Spatially distinct patterns of drought conditions across the …
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Tractor Rental Services In Kenya: Understanding Mechanization and Changes in Agricultural Production among Smallholder Farmers
… does not consistently raise revenue per acre. Maize yields decline while bean yields rise, highlighting crop-specific effects. These dynamics are most evident in regions with large tracts of land, where mechanization is more feasible. Tractor access increases both men's and women's …
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Novel strategies for genomic and phenomic investigations of quantitative traits in maize (Zea mays L.)
The genetic improvement of maize (Zea mays L.) over the past century has helped meet the world’s increasing demands for food, feed, fuel and fiber. With a still-growing population, changing dietary preferences, and a fast-changing climate that impacts agricultural production, interdisciplinary …
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Does root complexity affect the response of maize (Zea mays spp. mays) to abiotic stresses?
… some of the most influential factors affecting maize yields. Two of the most relevant stresses faced by growers are drought stress and low nitrogen fertility. Furthermore, production in the U.S. Corn Belt will likely continue to be significantly affected by the more frequent occurrence of hot, …
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Evaluation of southern African maize germplasm for phytoalexin accumulation following inoculation by Fusarium verticillioides
Maize is a socially and economically important crop in Africa (and worldwide) that is severely affected by many fungal pathogens. The pathogen Fusarium verticillioides causes Fusarium ear rot in maize, a disease that greatly reduces quantity and quality of annual maize yields. The pathogen produces …
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