Contribution à la lutte contre Pseudomonas solanacearum agent du flétrissement bactérien de Solanum tuberosum par les extraits de Tephrosia vogelii et Nicotiana tabacum ( Contribution on the struggle against Pseudomonas solanacearum agent of bacterial wilt of patato by the excepts from Tephrosia vogelii and Nicotiana tabacum )

The survey carrying on the struggle against the bacterial wilt of the potato has been led between November 2012 and February 2013 on the Penap variety in the perspective to defend Solanum tuberosum against the aggressions of Pseudomonas solanacearum and to valorize thus potentialities them bactericidal and insecticide that offer Tephrosia vogelii and Nicotiana tabacum. To the results gotten it has been established that the use of the excerpts of T. vogelii about 200g leaves in one liter of water on the potatoes during one month stop not only the propagation of the illness but also increase the vigor and is important to prolong the longevity of the plantations reached. As for the use of N. tabacum in the treatment of the bacterial withering of the only potato, its mechanical effect against the vector has been found. The association of two plants however was a factor to high risk for the potatoes.