Effect of no- till and conventional tillage on the mycorrhizal colonization in spring wheat

SCHALAMUK S; VELÁZQUEZ S; CHIDICHIMO H; CABELLO M

BOLETíN DE LA SOCIEDAD ARGENTINA DE BOTáNICA

SOCIEDAD ARGENTINA DE BOTÁNICA

Año: 2004 vol. 39 p. 13 - 20

0373-580X

The total root colonization of arbuscualr mycorrhizae (AMF) at different satges of wheat growth was evaluated under conventional tillage (CT) versus no-tillage (NT), with or whitout N fertlization. The percentage of hyphae, arbuscule and vesicle and the propagule number of arbuscular mycorrhizae were determined at tillering, flowering and grain filling of a wheat crop in La Plata (Buenos Aires, Argentina). We observed that tillage and N fertilization significantly reduced root colonization by mycorrhizae and the number of propagules in soil as well. Accordingly, an increase in root colonization was detected at flowering and grain filling stagen in NT management system that lacked N fertilization. We conclude that the management system has a significant impact on root colonization by AMF