Aufsatz
Legume rotation effects on early growth and rhizosphere microbiology of sorghum in West African soils
Zusammenfassung
Cereal yield increases in legume rotations on west African soils were the subject of much recent research aiming at the development of more productive cropping systems for the mainly subsistence-oriented agriculture in this region. However, little has been done to elucidate the possible contribution of soil microbiological factors to these rotation effects. Therefore a pot trial was conducted using legume rotation and continuous cereal soils each from one site in Burkina Faso and two sites in Togo where cropping system experiments had been conducted over 4 yrs. All soils were planted with seedlings of sorghum (Sorghum bicolor L. Moench). From 21 days after sowing onwards relative growth rates in rotation soils were higher than in the continuous cereal soils, resulting in between 69 and 500% higher shoot dry matter of rotation sorghum compared to sorghum growing in continuous cereal soils. Across sites rotation soils were characterized by higher pH, higher microbial N and a lower microbial biomass C/N ratio and, with the exception of one site, a higher fungal biomass in the rhizosphere. The bacterial and eukaryal community structure in the soil, assessed by denaturing gradient gel electrophoresis (DGGE), differed between
sites. However, only at one site differed the bacterial and the eukaryal community structure in the rotation soil significantly from that in the continuous cereal soil. Although the results of this study confirmed the marked plantgrowth differences between sub-Saharan legume-rotation soils and their continuous cereal counterparts they also showed the difficulties to differentiate possible microbiological causes from their effects.
sites. However, only at one site differed the bacterial and the eukaryal community structure in the rotation soil significantly from that in the continuous cereal soil. Although the results of this study confirmed the marked plantgrowth differences between sub-Saharan legume-rotation soils and their continuous cereal counterparts they also showed the difficulties to differentiate possible microbiological causes from their effects.
Zitierform
In: Plant and Soil. Dordrecht : Kluwer. 264.2004, H. 1, S. 325-334Sammlung(en)
Publikationen (Fachgebiet Ökologischer Pflanzenbau und Agrarökosystemforschung in den Tropen und Subtropen)Zitieren
@article{urn:nbn:de:hebis:34-2007052318284,
author={Marschner, P. and Jörgensen, Rainer Georg and Piepho, Hans-Peter and Bürkert, Andreas},
title={Legume rotation effects on early growth and rhizosphere microbiology of sorghum in West African soils},
year={2004}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2004$n2004 1500 1/eng 2050 ##0##urn:nbn:de:hebis:34-2007052318284 3000 Marschner, P. 3010 Jörgensen, Rainer Georg 3010 Piepho, Hans-Peter 3010 Bürkert, Andreas 4000 Legume rotation effects on early growth and rhizosphere microbiology of sorghum in West African soils / Marschner, P. 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/urn:nbn:de:hebis:34-2007052318284=x R 4204 \$dAufsatz 4170 7136 ##0##urn:nbn:de:hebis:34-2007052318284
2007-05-23T09:14:18Z 2007-05-23T09:14:18Z 2004 0032-079X urn:nbn:de:hebis:34-2007052318284 http://hdl.handle.net/123456789/2007052318284 95356 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ AM fungi DGGE nematodes microbial biomass microbial community structure 630 Legume rotation effects on early growth and rhizosphere microbiology of sorghum in West African soils Aufsatz Cereal yield increases in legume rotations on west African soils were the subject of much recent research aiming at the development of more productive cropping systems for the mainly subsistence-oriented agriculture in this region. However, little has been done to elucidate the possible contribution of soil microbiological factors to these rotation effects. Therefore a pot trial was conducted using legume rotation and continuous cereal soils each from one site in Burkina Faso and two sites in Togo where cropping system experiments had been conducted over 4 yrs. All soils were planted with seedlings of sorghum (Sorghum bicolor L. Moench). From 21 days after sowing onwards relative growth rates in rotation soils were higher than in the continuous cereal soils, resulting in between 69 and 500% higher shoot dry matter of rotation sorghum compared to sorghum growing in continuous cereal soils. Across sites rotation soils were characterized by higher pH, higher microbial N and a lower microbial biomass C/N ratio and, with the exception of one site, a higher fungal biomass in the rhizosphere. The bacterial and eukaryal community structure in the soil, assessed by denaturing gradient gel electrophoresis (DGGE), differed between sites. However, only at one site differed the bacterial and the eukaryal community structure in the rotation soil significantly from that in the continuous cereal soil. Although the results of this study confirmed the marked plantgrowth differences between sub-Saharan legume-rotation soils and their continuous cereal counterparts they also showed the difficulties to differentiate possible microbiological causes from their effects. open access In: Plant and Soil. Dordrecht : Kluwer. 264.2004, H. 1, S. 325-334 Marschner, P. Jörgensen, Rainer Georg Piepho, Hans-Peter Bürkert, Andreas The original publication is available at www.springerlink.com
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