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University of Saskatchewan (2008)

The effect of pulse crops on arbuscula mycorrhizal fungi in a durum-based cropping system

Fraser, Tandra

Titre : The effect of pulse crops on arbuscula mycorrhizal fungi in a durum-based cropping system

Auteur : Fraser, Tandra

Université de soutenance : University of Saskatchewan

Grade : Master of Science (M.Sc.) 2008

Résumé
Pulses are an important component in crop rotations in the semiarid Brown soil zone of southern Saskatchewan, Canada. Besides their capability to fix nitrogen, pulse crops establish a strong symbiotic relationship with arbuscular mycorrhizal fungi (AMF), which have been shown to increase nutrient and water uptake through hyphal extensions in the soil. Incorporating strongly mycorrhizal crops in a rotation may increase inoculum levels in the soil and benefit the growth of a subsequent crop. The objective of this study was to determine if AMF potential and colonization of a durum crop is significantly affected by cropping history and to assess the impact of pulses in crop rotations on the abundance and diversity of AMF communities in the soil. In 2004 and 2005, soil, plant, and root samples were taken on Triticum turgidum L. (durum) with preceding crops of Pisum sativum L. (pea), Lens culinaris Medik (lentil), Cicer arietinum L. (chickpea), Brassica napus L. (canola) or Triticum turgidum L. (durum). Although there were few differences in soil N and P levels, previous crop had a significant effect

Mots Clés : Soil Microbial Community Structure Pulse Crops Crop Rotation Arbuscular Mycorrhizal Fungi Durum Wheat Pea Lentil Canola Phospholipid Fatty Acid Profile Water Use Efficiency

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Page publiée le 14 mars 2015, mise à jour le 31 janvier 2018