Rhizobium meliloti distribution in the soil following alfalfa inoculation |
| |
Authors: | Lynn E Barber |
| |
Institution: | (1) Department of Microbiology, North Carolina State University, 27650 Raleigh, North Carolina |
| |
Abstract: | Summary Alfalfa seeds, inoculated with an antibiotic-resistantRhizobium meliloti strain, were planted in three replicated field plots at Clayton, N.C. Core samples were taken three times in the next year
at 0, 10, and 20 cm from the edge of each plot. Soil subsamples were taken from within each core sample at 0, 6, 12, and 18
cm depths. The numbers of the inoculum Rhizobium strain in each soil subsample were determined by inoculation of alfalfa plants
with diluted soil samples. In general the distribution of rhizobia showed some movement outward and downward in the soil.
Lower counts were obtained at the surface during summer. The Rhizobium persistence pattern in the soil differed in the three
plots which is consistent with the variability in Rhizobium numbers often observed in established alfalfa stands.
Cooperative investigation of the United States Department of Agriculture, Science and Education Administration, Agricultural
Research and the North Carolina Agricultural Research Service, Raleigh, North Carolina. Paper No. 6818 of the Journal Series
of the North Carolina Agricultural Research Service at Raleigh. |
| |
Keywords: | Alfalfa Enumeration Inoculation Persistance Rhizobium meliloti Survival |
本文献已被 SpringerLink 等数据库收录! |
|