Agriculture & Biology
Sinorhizobium fredii
100%
plasmids
49%
Escherichia coli
41%
soil
32%
soil pH
21%
soil organic matter
20%
clay
20%
sandy loam soils
12%
acids
12%
bacteria
11%
USDA
11%
soil water content
10%
Southern blotting
9%
soil water
9%
temperature
8%
antibiotics
8%
salts
7%
genes
3%
Earth & Environmental Sciences
rhizobacterium
87%
plasmid
79%
in situ
39%
soil
27%
incubation
20%
soil moisture
13%
organic matter
10%
bacterium
10%
acid
10%
sandy loam
9%
antibiotics
8%
moisture content
7%
probe
6%
gene
6%
temperature
6%
salt
5%
rate
5%
Medicine & Life Sciences
Rhizobium
99%
Soil
70%
Plasmids
52%
Escherichia coli
45%
Clay
16%
2-(N-morpholino)ethanesulfonic acid
11%
HEPES
8%
Temperature
8%
United States Department of Agriculture
8%
Bacteria
8%
Salts
5%
Anti-Bacterial Agents
3%
Genes
2%