Effet comparé des poudres de Nicotiana tabacum L, Cymbopogon citratus (D.C.) Stapf et de l'huile de Ricinus communis L sur la conservation des graines de Vigna unguiculata (L) Walp

Abstract

Compared Effect of Nicotiana tabacum L, Cymbopogon citratus (D.C.) Stapf Powders and Castor Oil Ricinus communis L. on Conservation of Cowpea Vigna Unguiculata (L.) Walp Grains. The effect of powder of tobacco Nicotiana tabacum L. and citronella grass Cymbopogon citratus (D.C.) Stapf and castor oil Ricinus communis L. on conservation of cowpea Vigna unguiculata (L.) Walp. grains was investigated in Kisangani, Zaire. After 5 months of conservation, infestation rates by bean weevil Acanthoscelides obtectus Say were 72.5 %, 74.5 %, 49.5 % and 5 % respectively for the check, the samples treated by 1 % of citronella grass and tobacco powder and 1 % of castor oil. The powder dose of 7.5 % did not give more interesting results.

Keywords

• Nicotiana tabacum Cymbopogon citratus Ricinus communis Vigna unguiculata