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article/chapitre/communication
Field experiments were sown with alfalfa mosaic virus (AMV)-infected or healthy seed of burr medic (Medicago polymorpha) and grazed by sheep. Seed-infected plants acted as primary sources for virus spread by naturally occurring aphids. Admixture[...]article/chapitre/communication
A. Morvanbertrand ; J. Boucaud ; M. Prudhomme | 1999An experiment was designed to evaluate the role of N and C reserves on regrowth of Lolium perenne cv, Brave following defoliation. By using two nitrogen fertilization levels together with three photoperiodic conditions, plants with variable cont[...]article/chapitre/communication
B. Deinum | 1976article/chapitre/communication
J. Volenec ; A. Ourry ; B. Joern | 1996