NUTRIENT FACTORS INFLUENCING THE DISTRIBUTION OF TWO CLOSELY RELATED SPECIES OF ARGEMONE

Summary. Argemone mexicana L. and A. ochroleuca Sweet., two closely related species that often co-exist in the same habitat, showed different responses to nitrogen, phosphorus and potassium. Total yield, shoot: root ratios and nutrient uptake all differed. The significance of these results is discussed and it is concluded that the differences not only permit the species to exist in ecologically distinct habitats but also allow them both to survive in apparent co-existence.
Facteurs de la nutrition influençant la distribution de deux espéces très voisines d 'Argemone