Results 61 to 70 of about 37,855 (304)
AgronomyA field trial was conducted at two locations in northern Ghana over two successive years to determine the optimal insecticide application timings for mitigating non-lepidopteran pest infestations in a cowpea (Vigna unguiculata (L.) Walp.) variety ...
Jerry A. Nboyine +9 more
doaj +1 more source
Factors that Determine Aflatoxin Infestation in Ghana: Application of Cragg's Double Hurdle Model
Sustainable Futures, 2020 In our application of Cragg's (double hurdle) model, we explicitly address functional form misspecification by first using nonparametric regression to identify the functional relationship between aflatoxin infestation and a vector of agronomic and ...
Prince Maxwell Etwire, Edward Martey
doaj +1 more source
Frontiers in Plant Science, 2022 Early Leaf Spot (ELS) caused by the fungus Passalora arachidicola and Late Leaf Spot (LLS) also caused by the fungus Nothopassalora personata, are the two major groundnut (Arachis hypogaea L.) destructive diseases in Ghana.
Emmanuel Kofi Sie +12 more
doaj +1 more source
Evidence for adaptive explanations of semelparity in animals
Biological Reviews, EarlyView.ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher +1 more
wiley +1 more source
Characterization of a North Carolina Lower Coastal Plain Wet Pine Savanna. [PDF]
, 2007 Savannas in the southeastern United States formerly occurred from East Texas to southern Virginia. Logging, conversion to agriculture, and fire suppression have reduced their area and extent, and there is an urgent need to catalogue and classify the ...
Wall, Wade Alan
core
Carrion ecology: concepts, interdisciplinary synthesis, and perspectives
Biological Reviews, EarlyView.ABSTRACT Carrion is a ubiquitous resource in both terrestrial and aquatic ecosystems, yet it has long been overlooked in ecological research. Over the past two decades, studies on carrion and the many organisms that exploit it have flourished, revealing not only wide‐ranging ecological functions but also significance far beyond ecology.
Marcos Moleón +38 more
wiley +1 more source
Advances in Agriculture, 2018 A field experiment was conducted at Savanna Agricultural Research Institute in 2015 cropping season to examine the inheritance of early maturity among an extra-early maturing landrace Sanzi and a medium maturing variety Padi-Tuya and their progenies. The
Emmanuel Yaw Owusu +5 more
doaj +1 more source
Temperature Coefficient Analysis of Polycrystalline PV Modules Under Field Conditions in Ghana
Energy Science &Engineering, EarlyView.Field measurements from a commercial PV plant in Ghana show polycrystalline module temperature coefficients of −0.473%/°C—31% higher than manufacturer values—highlighting the risk of underestimating energy losses and degradation in fast‐growing West African solar deployments.
Emmanuel Akono Sarsah +1 more
wiley +1 more source
Growth and age determination of African savanna elephants [PDF]
, 2006 Understanding the population dynamics of savanna elephants depends on estimating population parameters such as the age at first reproduction, calving interval and age-specific survival rates.
Ferreira, Sam M +11 more
core +1 more source
Afforestation of tropical savannas has mixed consequences for bird communities
Conservation Science and PracticeLand‐use change is a key driver of tropical savanna biodiversity and one such widespread change is the conversion of ancient (i.e., old‐growth) savannas to tree plantations.
Siddhant Mhetre +5 more
doaj +1 more source