Results 51 to 60 of about 119,922 (306)

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto   +3 more
wiley   +1 more source

Contribution of NOAA- AVHRR data to African savan nahs Characterization [PDF]

open access: yes, 2005
The Advanced Very High Resolution Radiometer (AVHRR) is currently used for vegetation monitoring. Information on the state and evolution of the vegetation cover on continental areas is routinely obtained from Global Vegetation Index data (GVI).
Gond, Valéry
core  

Morpho‐functional analyses of the jaw apparatus in the Blue‐and‐yellow Macaw (Ara ararauna, Psittaciformes, Aves): Adaptations to feeding behavior

open access: yesThe Anatomical Record, EarlyView.
Abstract Macaws are renowned for processing dry, mechanically resistant fruits, yet the species‐level anatomical and functional correlates of this performance remain incompletely resolved. We examined the feeding apparatus of the Blue‐and‐yellow Macaw (Ara ararauna) using an integrated approach that combines osteology, myology, and bite‐force estimates
Sérgio R. Posso   +2 more
wiley   +1 more source

Soil Amendments and Rotation Effects on Soybean and Maize Growths and Soil Chemical Changes in Northern Ghana

open access: yesInternational Journal of Agronomy, 2017
A four-year field trial was conducted at Bonia in the Upper East Region of Ghana to evaluate soybean-maize rotation amendment systems. The treatments included soybean without amendment, inoculated soybean, inoculated soybean with fertisol, inoculated ...
R. A. L. Kanton   +5 more
doaj   +1 more source

ECONOMICS OF MAIZE PRODUCTION UNDER DIFFERENT COWPEA-BASED GREEN MANURE PRACTICES IN DERIVED SAVANNA ZONE OF NIGERIA [PDF]

open access: yes, 2012
There is a challenge in Nigeria of how to sustainably increase land productivity in the face of land pressures, un-availability and/or high cost of fertilizers, and reduced fallow periods.
Agbonlahor, Mure. U, Fabunmi, Thomas. O.
core  

Emission factors for open and domestic biomass burning for use in atmospheric models [PDF]

open access: yes, 2010
Biomass burning (BB) is the second largest source of trace gases and the largest source of primary fine carbonaceous particles in the global troposphere. Many recent BB studies have provided new emission factor (EF) measurements.
Akagi, S. K.   +7 more
core   +3 more sources

Use of Restricted Nursing and a Bovine Appeasing Substance on the Welfare, Growth Performance, and Response to Vaccination of Beef Calves at Weaning

open access: yesAnimal Research and One Health, EarlyView.
The effects of restricted nursing (RN) and the administration of a bovine appeasing substance (BAS) on days −8 and 0 in relation to weaning were evaluated. Both strategies were effective in improving the growth performance of beef calves. Regarding welfare, BAS ‐especially on day 0‐ was more effective than RN.
Denise E. Mussalafo   +8 more
wiley   +1 more source

Biochar effects on soil properties and yield of maize in Northern region, Ghana

open access: yesDiscover Agriculture
Soil degradation and declining crop productivity are persistent challenges in global agriculture, particularly in sub-Saharan Africa. While biochar application has gained recognition as a sustainable soil amendment, this study systematically evaluates ...
Abdul-Latif Abdul-Aziz   +5 more
doaj   +1 more source

The Yield and Pest Trade-Off: An Analysis of Insecticide Spray Frequency on the Performance of a Genetically Modified Cowpea in Ghana

open access: yesAgronomy
A 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

Inheritance of Early Maturity in Some Cowpea (Vigna unguiculata (L.) Walp.) Genotypes under Rain Fed Conditions in Northern Ghana

open access: yesAdvances 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

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