EFFECT OF ARBUSCULAR MYCORRHIZAS ON CROWN ROT (PHYTOPHTHORA-CACTORUM)IN MICROPROPAGATED STRAWBERRY PLANTS

Citation
M. Vestberg et al., EFFECT OF ARBUSCULAR MYCORRHIZAS ON CROWN ROT (PHYTOPHTHORA-CACTORUM)IN MICROPROPAGATED STRAWBERRY PLANTS, Agricultural science in Finland, 3(3), 1994, pp. 289-295
Citations number
NO
Categorie Soggetti
AgricultureEconomics & Policy",Agriculture,"Agriculture Dairy & AnumalScience","Food Science & Tenology
ISSN journal
0789600X
Volume
3
Issue
3
Year of publication
1994
Pages
289 - 295
Database
ISI
SICI code
0789-600X(1994)3:3<289:EOAMOC>2.0.ZU;2-N
Abstract
Preliminary studies were conducted on the effect of arbuscular mycorrh izal fungi (AMF) against strawberry crown rot caused by Phytophthora c actorum (Leb. & Cohn) Schroet. A micropropagated strawberry cultivar s usceptible to the disease, 'Jonsok', was either inoculated with the Fi nnish AMF strains Glomus mosseae (Nicol. & Gerd.) Gerdemann & Trappe V 57, G. hoi Berch & Trappe V98 and G. fistulosum Skou & Jakobsen V128, or it was left uninoculated. AMF inoculation at the beginning of the w eaning stage, five weeks before the establishment of the pot or field experiment, did not decrease crown rot severity in either of the exper iments. In the pot experiment, on the contrary, AMF lowered the plant health index when P. cactorum was added to the substrate in the form o f infected plant residues. Results are discussed in relation to soil-b orne vs. foliar disease, phosphorus concentration of the growth substr ate and influence of weather conditions.