Interactions of arbuscular mycorrhizae,Meloidogyne arenaria,and phosphorus fertilization on peanut |
| |
| Authors: | D E Carling R W Roncadori R S Hussey |
| |
| Institution: | (1) Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, Palmer, AK 99645, USA Tel: +1–907–746–9470; Fax: +1–907–746–2677; e-mail: PFDEC@orion.alaska.edu, US;(2) Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA, GE |
| |
| Abstract: | The individual and combined effects of two arbuscular mycorrhizal fungi (AMF), Meloidogyne arenaria, and phosphorus (P) fertilization, (0, 25, 75, and 125 μg/g soil) on peanut plant growth and pod yield were determined in
greenhouse studies. Best growth and yield usually occurred at 75 or 125 μg P regardless of inoculation treatment. Peanut growth
and yield were generally stimulated by AMF development, and growth alone was suppressed by M. arenaria at 0 and 25 μg P. In challenge inoculations, VAM increased peanut plant tolerance to the nematode and offset the growth reductions
caused by M. arenaria at the two lower P levels. However, VAM and added P increased galling and M. arenaria egg production/g root, thereby increasing peanut susceptibility to nematode attack. M. arenaria had only a minimal effect on root colonization by AMF and sporulation by the fungi.
Accepted: 9 June 1995 |
| |
| Keywords: | Arachis hypogaea Endomycorrhizae Root-knot nematode |
| 本文献已被 SpringerLink 等数据库收录！ |
|
