Impact of Organic and Conventional Systems of Coffee Farming on Soil Properties and Culturable Microbial Diversity
Table 4
Organic and conventional method of coffee farming on culturable microbial population.
Microflora population (CFU × 104/g) at 0–15 and 15–30 cm soil depth
Management systems
Bacteria
Fungi
Yeast
Actinomycetes
PSM
Azotobacter spp.
P. fluorescens
Total population
0–15
15–30
0–15
15–30
0–15
15–30
0–15
15–30
0–15
15–30
0–15
15–30
0–15
15–30
0–15
15–30
Organic
76.3
43.5
7.5
5.0
44.1
19.1
21.5
8.8
4.5
3.5
2.3
1.8
26.5
13.3
182.6
95.1
Conventional
58.1
40.6
6.6
2.6
18.0
13.0
14.5
10.5
2.5
1.8
2.0
1.5
18.8
11.1
121.0
81.0
SEm
9.1
1.45
0.45
1.2
13.1
3.05
3.5
0.85
1.0
0.85
0.15
0.16
3.85
1.10
30.8
7.1
CD (0.05)
12.77
NS
NS
NS
5.35
4.92
NS
NS
1.99
1.58
NS
NS
5.25
NS
22.1
9.2
CD (0.01)
NS
NS
NS
NS
8.39
NS
NS
NS
NS
NS
NS
NS
NS
NS
31.2
12.9
All the values are mean of 5 replications. SEm: standard error of mean; CD: critical difference; NS: nonsignificant; CFU: colony forming unit; P. fluorescens: Pseudomonas fluorescens. Superscript letters indicate statistical significance following Tukey multiple comparison tests.
