Results 201 to 210 of about 175,935 (244)
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2001
Le cacaoyer est un arbre particulièrement sensible aux maladies et aux ravageurs qui constituent souvent des facteurs limitants sa production. Actuellement on estime que 70 % des plantations sont constituées de populations peu ou pas sélectionnées, 25 % de variétés hybrides sélectionnées et moins de 5% de variétés clonales.
Eskes, Albertus, Lanaud, Claire
+5 more sources
Le cacaoyer est un arbre particulièrement sensible aux maladies et aux ravageurs qui constituent souvent des facteurs limitants sa production. Actuellement on estime que 70 % des plantations sont constituées de populations peu ou pas sélectionnées, 25 % de variétés hybrides sélectionnées et moins de 5% de variétés clonales.
Eskes, Albertus, Lanaud, Claire
+5 more sources
ACM SIGSAM Bulletin, 2004
The CoCoA program together with Singular and Macaulay 2 form an elite group of highly specialized systems having as their main forte the capability to calculate Gröbner bases . Although a number of general purpose symbolic computation systems (e.g.
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The CoCoA program together with Singular and Macaulay 2 form an elite group of highly specialized systems having as their main forte the capability to calculate Gröbner bases . Although a number of general purpose symbolic computation systems (e.g.
openaire +1 more source
2007
West Africa was - conceived - for the most part by the colonizers seeking suppliers of agricultural raw materials. The Office du Niger (initially set up for cotton), the groundnut basins in Senegal and northern Nigeria, cotton basins, rubber tree and oil palm plantations were responsible for shaping the rural landscape, fostering the development of ...
Bastide, Philippe, Perret, Christophe
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West Africa was - conceived - for the most part by the colonizers seeking suppliers of agricultural raw materials. The Office du Niger (initially set up for cotton), the groundnut basins in Senegal and northern Nigeria, cotton basins, rubber tree and oil palm plantations were responsible for shaping the rural landscape, fostering the development of ...
Bastide, Philippe, Perret, Christophe
openaire +1 more source
Outlook on Agriculture, 1983
The economic importance of cocoa needs no emphasis: current production is around 1.6 million metric tons per annum, currently valued at about £2 billion. This article reviews the changing pattern of world production; new techniques of cultivation and processing; and the prevention and control of pests and diseases.
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The economic importance of cocoa needs no emphasis: current production is around 1.6 million metric tons per annum, currently valued at about £2 billion. This article reviews the changing pattern of world production; new techniques of cultivation and processing; and the prevention and control of pests and diseases.
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, 1992 Traduction en anglais de l'ouvrage paru en 1990 chez Maisonneuve et Larose dans la collection "Technicien d'Agriculture Tropicale"
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Proceedings of the International Symposium on Memory Systems, 2018
Mozammel Huq, Michael Tribe
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Mozammel Huq, Michael Tribe
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