- Vol 107, No 9 (2014)
- Pages: 1452-1463
- Published: 2014-11-10
- https://doi.org/10.18520/cs%2Fv107%2Fi9%2F1452-1463
Open Access
Subscription Access
Impacts of Bioclimates, Cropping Systems, Land Use and Management on the Cultural Microbial Population in Black Soil Regions of India
K. Velmourougane
1,
M. V. Venugopalan
1,
T. Bhattacharyya
2,
D. Sarkar
2,
S. K. Ray
2,
P. Chandran
2,
D. K. Pal
3,
D. K. Mandal
2,
J. Prasad
2,
G. S. Sidhu
4,
K. M. Nair
5,
A. K. Sahoo
6,
K. S. Anil Kumar
5,
A. Srivastava
7,
T. H. Das
6,
R. S. Singh
8,
C. Mandal
2,
R. Srivastava
2,
T. K. Sen
2,
S. Chatterji
2,
N. G. Patil
2,
G. P. Obireddy
2,
S. K. Mahapatra
4,
K. Das
6,
S. K. Singh
6,
S. K. Reza
9,
D. Dutta
6,
S. Srinivas
5,
P. Tiwary
2,
K. Karthikeyan
2,
Mausumi Raychaudhuri
10,
D. K. Kundu
10,
K. G. Mandal
10,
G. Kar
10,
S. L. Durge
2,
G. K. Kamble
2,
M. S. Gaikwad
2,
A. M. Nimkar
2,
S. V. Bobade
2,
S. G. Anantwar
2,
S. Patil
2,
M. S. Gaikwad
2,
V. T. Sahu
2,
H. Bhondwe
2,
S. S. Dohtre
2,
S. Gharami
2,
S. G. Khapekar
2,
A. Koyal
5,
Sujatha
5,
B. M. N. Reddy
5,
P. Sreekumar
5,
D. P. Dutta
9,
L. Gogoi
9,
V. N. Parhad
2,
A. S. Halder
6,
R. Basu
6,
R. Singh
8,
B. L. Jat
8,
D. L. Oad
8,
N. R. Ola
8,
A. Sahu
2,
K. Wadhai
2,
M. Lokhande
2,
V. T. Dongare
2,
A. Hukare
2,
N. Bansod
2,
A. Kolhe
2,
J. Khuspure
2,
H. Kuchankar
2,
D. Balbuddhe
2,
S. Sheikh
2,
B. P. Sunitha
5,
B. Mohanty
4,
D. Hazarika
9,
S. Majumdar
6,
R. S. Garhwal
8,
S. Mahapatra
10,
S. Puspamitra
10,
A. Kumar
7,
N. Gautam
2,
B. A. Telpande
2,
A. M. Nimje
2,
C. Likhar
2,
S. Thakre
2
Affiliations
1 Central Institute for Cotton Research, Nagpur 440 010, India
2 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
3 International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502 324, India
4 Regional Centre, National Bureau of Soil Survey and Land Use Planning, New Delhi 110 012, India
5 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
6 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
7 National Bureau of Agriculturally Important Microorganisms, Mau 275 101, India
8 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
9 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
10 Directorate of Water Management, Bhubaneswar 751 023, India
1 Central Institute for Cotton Research, Nagpur 440 010, India
2 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
3 International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502 324, India
4 Regional Centre, National Bureau of Soil Survey and Land Use Planning, New Delhi 110 012, India
5 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
6 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
7 National Bureau of Agriculturally Important Microorganisms, Mau 275 101, India
8 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
9 Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
10 Directorate of Water Management, Bhubaneswar 751 023, India
The present study documents the biological properties of the black soil region (BSR) of India in terms of culturable microbial population. Besides surface microbial population, subsurface population of individual soil horizons is described to improve the soil information system. An effort has been made to study the depth-wise distribution and factors (bioclimates, cropping systems, land use, management practices and soil properties) influencing the microbial population in the soils of the selected benchmark spots representing different agro-ecological sub-regions of BSR. The microbial population declined with depth and maximum activity was recorded within 0-30 cm soil depth. The average microbial population (log10 cfu g-1) in different bioclimates is in decreasing order of SHm > SHd > Sad > arid. Within cropping systems, legumebased system recorded higher microbial population (6.12 log10 cfu g-1) followed by cereal-based system (6.09 log10 cfu g-1). The mean microbial population in different cropping systems in decreasing order is legume > cereal > sugarcane > cotton. Significantly higher (P < 0.05) microbial population has been recorded in high management (6.20 log10 cfu g-1) and irrigated agrosystems (6.33 log10 cfu g-1) compared to low management (6.12 log10 cfu g-1) and rainfed agrosystems (6.17 log10 cfu g-1). The pooled analysis of data inclusive of bioclimates, cropping systems, land use, management practices, and edaphic factors indicates that microbial population is positively influenced by clay, fine clay, water content, electrical conductivity, organic carbon, cation exchange capacity and base saturation, whereas bulk density, pH, calcium carbonate and exchangeable magnesium percentage have a negative effect on the microbial population.
Keywords
Agro-Ecological Sub-Regions, Benchmark Spots, Black Soil Regions, Principal Component Analysis, Soil Microbial Population.
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- Impacts of Bioclimates, Cropping Systems, Land Use and Management on the Cultural Microbial Population in Black Soil Regions of India
Abstract Views: 270 |
PDF Views: 99
The present study documents the biological properties of the black soil region (BSR) of India in terms of culturable microbial population. Besides surface microbial population, subsurface population of individual soil horizons is described to improve the soil information system. An effort has been made to study the depth-wise distribution and factors (bioclimates, cropping systems, land use, management practices and soil properties) influencing the microbial population in the soils of the selected benchmark spots representing different agro-ecological sub-regions of BSR. The microbial population declined with depth and maximum activity was recorded within 0-30 cm soil depth. The average microbial population (log10 cfu g-1) in different bioclimates is in decreasing order of SHm > SHd > Sad > arid. Within cropping systems, legumebased system recorded higher microbial population (6.12 log10 cfu g-1) followed by cereal-based system (6.09 log10 cfu g-1). The mean microbial population in different cropping systems in decreasing order is legume > cereal > sugarcane > cotton. Significantly higher (P < 0.05) microbial population has been recorded in high management (6.20 log10 cfu g-1) and irrigated agrosystems (6.33 log10 cfu g-1) compared to low management (6.12 log10 cfu g-1) and rainfed agrosystems (6.17 log10 cfu g-1). The pooled analysis of data inclusive of bioclimates, cropping systems, land use, management practices, and edaphic factors indicates that microbial population is positively influenced by clay, fine clay, water content, electrical conductivity, organic carbon, cation exchange capacity and base saturation, whereas bulk density, pH, calcium carbonate and exchangeable magnesium percentage have a negative effect on the microbial population.
DOI: https://doi.org/10.18520/cs%2Fv107%2Fi9%2F1452-1463
Authors
K. Velmourougane
Central Institute for Cotton Research, Nagpur 440 010, India
Central Institute for Cotton Research, Nagpur 440 010, India
M. V. Venugopalan
Central Institute for Cotton Research, Nagpur 440 010, India
Central Institute for Cotton Research, Nagpur 440 010, India
T. Bhattacharyya
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
D. Sarkar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. K. Ray
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
P. Chandran
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
D. K. Pal
International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502 324, India
International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502 324, India
D. K. Mandal
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
J. Prasad
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
G. S. Sidhu
Regional Centre, National Bureau of Soil Survey and Land Use Planning, New Delhi 110 012, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, New Delhi 110 012, India
K. M. Nair
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
A. K. Sahoo
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
K. S. Anil Kumar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
A. Srivastava
National Bureau of Agriculturally Important Microorganisms, Mau 275 101, India
National Bureau of Agriculturally Important Microorganisms, Mau 275 101, India
T. H. Das
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
R. S. Singh
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
C. Mandal
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
R. Srivastava
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
T. K. Sen
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. Chatterji
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
N. G. Patil
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
G. P. Obireddy
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. K. Mahapatra
Regional Centre, National Bureau of Soil Survey and Land Use Planning, New Delhi 110 012, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, New Delhi 110 012, India
K. Das
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
S. K. Singh
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
S. K. Reza
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
D. Dutta
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
S. Srinivas
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
P. Tiwary
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
K. Karthikeyan
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Mausumi Raychaudhuri
Directorate of Water Management, Bhubaneswar 751 023, India
Directorate of Water Management, Bhubaneswar 751 023, India
D. K. Kundu
Directorate of Water Management, Bhubaneswar 751 023, India
Directorate of Water Management, Bhubaneswar 751 023, India
K. G. Mandal
Directorate of Water Management, Bhubaneswar 751 023, India
Directorate of Water Management, Bhubaneswar 751 023, India
G. Kar
Directorate of Water Management, Bhubaneswar 751 023, India
Directorate of Water Management, Bhubaneswar 751 023, India
S. L. Durge
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
G. K. Kamble
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
M. S. Gaikwad
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
A. M. Nimkar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. V. Bobade
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. G. Anantwar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. Patil
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
M. S. Gaikwad
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
V. T. Sahu
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
H. Bhondwe
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. S. Dohtre
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. Gharami
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. G. Khapekar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
A. Koyal
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Sujatha
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
B. M. N. Reddy
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
P. Sreekumar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
D. P. Dutta
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
L. Gogoi
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
V. N. Parhad
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
A. S. Halder
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
R. Basu
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
R. Singh
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
B. L. Jat
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
D. L. Oad
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
N. R. Ola
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
A. Sahu
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
K. Wadhai
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
M. Lokhande
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
V. T. Dongare
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
A. Hukare
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
N. Bansod
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
A. Kolhe
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
J. Khuspure
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
H. Kuchankar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
D. Balbuddhe
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. Sheikh
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
B. P. Sunitha
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Bangalore 560 024, India
B. Mohanty
Regional Centre, National Bureau of Soil Survey and Land Use Planning, New Delhi 110 012, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, New Delhi 110 012, India
D. Hazarika
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Jorhat 785 004, India
S. Majumdar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Kolkata 700 091, India
R. S. Garhwal
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Udaipur 313 001, India
S. Mahapatra
Directorate of Water Management, Bhubaneswar 751 023, India
Directorate of Water Management, Bhubaneswar 751 023, India
S. Puspamitra
Directorate of Water Management, Bhubaneswar 751 023, India
Directorate of Water Management, Bhubaneswar 751 023, India
A. Kumar
National Bureau of Agriculturally Important Microorganisms, Mau 275 101, India
National Bureau of Agriculturally Important Microorganisms, Mau 275 101, India
N. Gautam
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
B. A. Telpande
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
A. M. Nimje
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
C. Likhar
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
S. Thakre
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Regional Centre, National Bureau of Soil Survey and Land Use Planning, Nagpur 440 033, India
Abstract
The present study documents the biological properties of the black soil region (BSR) of India in terms of culturable microbial population. Besides surface microbial population, subsurface population of individual soil horizons is described to improve the soil information system. An effort has been made to study the depth-wise distribution and factors (bioclimates, cropping systems, land use, management practices and soil properties) influencing the microbial population in the soils of the selected benchmark spots representing different agro-ecological sub-regions of BSR. The microbial population declined with depth and maximum activity was recorded within 0-30 cm soil depth. The average microbial population (log10 cfu g-1) in different bioclimates is in decreasing order of SHm > SHd > Sad > arid. Within cropping systems, legumebased system recorded higher microbial population (6.12 log10 cfu g-1) followed by cereal-based system (6.09 log10 cfu g-1). The mean microbial population in different cropping systems in decreasing order is legume > cereal > sugarcane > cotton. Significantly higher (P < 0.05) microbial population has been recorded in high management (6.20 log10 cfu g-1) and irrigated agrosystems (6.33 log10 cfu g-1) compared to low management (6.12 log10 cfu g-1) and rainfed agrosystems (6.17 log10 cfu g-1). The pooled analysis of data inclusive of bioclimates, cropping systems, land use, management practices, and edaphic factors indicates that microbial population is positively influenced by clay, fine clay, water content, electrical conductivity, organic carbon, cation exchange capacity and base saturation, whereas bulk density, pH, calcium carbonate and exchangeable magnesium percentage have a negative effect on the microbial population.
Keywords
Agro-Ecological Sub-Regions, Benchmark Spots, Black Soil Regions, Principal Component Analysis, Soil Microbial Population.
DOI: https://doi.org/10.18520/cs%2Fv107%2Fi9%2F1452-1463