Results 21 to 30 of about 35,680 (145)

La polémica decimonónica sobre los pantanos

open access: yesEstudios Geográficos, 2002
[fr] L'échec des «super-barrages» du XVIIP siècle, de El Gascó, Valdeinfierno et, surtout, Puents, catastrophe, cette dernière, sans équivalent dans l'histoire hydraulique espagnole, fut la cause du rejet, pratiquement généralisé, de ce genre de ...
Antonio Gil Olcina
doaj   +1 more source

Agro-Morphological Variability of Wild Vigna Species Collected in Senegal

open access: yesAgronomy, 2023
The domesticated Vigna species still need some of the beneficial characters that exist in the wild Vigna species, despite the improvements obtained so far.
Demba Dramé   +8 more
doaj   +1 more source

Building block libraries and structural considerations in the self-assembly of polyoxometalate and polyoxothiometalate systems [PDF]

open access: yes, 2018
Inorganic metal-oxide clusters form a class of compounds that are unique in their topological and electronic versatility and are becoming increasingly more important in a variety of applications.
A Dolbecq   +66 more
core   +1 more source

Current Status of Pearl Millet Downy Mildew Prevalence across Agroecological Zones of Senegal

open access: yesThe Scientific World Journal, 2019
Pearl millet is a dominant staple cereal crop for smallholder farmers in Senegal. However, the crop is constrained by various nonbiotic and biotic stresses such as downy mildew disease.
Yedomon Ange Bovys Zoclanclounon   +5 more
doaj   +1 more source

Ethnobotanical study of cowpea (Vigna unguiculata (L.) Walp.) in Senegal

open access: yesJournal of Ethnobiology and Ethnomedicine, 2022
Cowpea (Vigna unguiculata) plays a key role in family farming systems in Senegal. It makes an essential contribution to economic, nutritional and food security.
Awa Sarr   +10 more
doaj   +1 more source

Índice estandarizado de precipitación (SPI) para la caracterización de sequías meteorológicas en la cuenca del río Dagua-Colombia

open access: yesEstudios Geográficos, 2015
El Índice Estandarizado de Precipitación (SPI) caracteriza las sequías meteorológicas de un lugar, mediante la cuantificación del déficit de precipitación en diferentes períodos de tiempo.
Wilmar Loaiza Cerón   +2 more
doaj   +1 more source

Assessment of 16 Peanut (Arachis hypogaea L.) CSSLs Derived from an Interspecific Cross for Yield and Yield Component Traits: QTL Validation

open access: yesAgronomy, 2020
Cultivated peanut is an allotetraploid (2n = 4× = 40) with narrow genetic diversity. In previous studies, we developed an advanced backcross quantitative trait loci (AB-QTL) population from the cross between the synthetic allotetraploid ((Arachis ...
Hodo-Abalo Tossim   +7 more
doaj   +1 more source

« L’implacable beau temps » ? La remarquabilité de l’épisode de sécheresse de 1893

open access: yesSciences, Eaux & Territoires
En 1893, la France a connu un épisode de sécheresse printanière sévère, affectant profondément les activités agricoles et motivant une réaction gouvernementale qui ne se manifeste pas dans le cas d’autres épisodes de sécheresse.
Hélène KOWALSKI
doaj   +1 more source

Risque extensif et risque quotidien dans le Chaco bolivien : sources de crise et catastrophe

open access: yesRevue de Géographie Alpine, 2012
Les risques de catastrophe suivent un continuum qui va des risques structurels initiaux (de pré-impact) aux risques futurs ou directement liés aux pratiques de reconstruction et à une récupération1 inadéquate, en passant par les risques contingents ...
Lilian R. Reyes Pando, Allan Lavell
doaj   +1 more source

ong et Développement Agricole Au Burkina Faso: Présence Majeure et Effets Mineurs [PDF]

open access: yes, 1994
This report analyses the effect of NGO participation on Agriculture ...
Alain Piveteau
core  

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