TY  - JA
AU  - Verachtert,E.
AU  - Govaerts,B.
AU  - Lichter,K.
AU  - Sayre,K.D.
AU  - Ceballos-Ramirez,J.M.
AU  - Luna Guido,M.
AU  - Deckers,J.
AU  - Dendooven,L.
TI  - Short term changes in dynamics of C and N in soil when crops are cultivated on permanent raised beds
SN  - 1573-5036
PY  - 2009///
CY  - Dordrecht (Netherlands)
PB  - Springer
KW  - Carbon
KW  - AGROVOC
KW  - Nitrogen
KW  - Conventional tillage
KW  - Zero tillage
KW  - Crop residues
KW  - Nitrogen fertilizers
N1  - Peer review; Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0032-079X
N2  - Densely populated, intensively cropped highland areas in the subtropics are prone to erosion and declining soil fertility, making agriculture unsustainable. Permanent raised bed planting systems, as a form of conservation agriculture, have been developed to reduce production costs while conserving resources and sustaining the environment. In 2004, a new experiment with long term focus was started under rain fed conditions at El Batán (Mexico; 2,240 m a.s.l.; 19.31N, 98.50W; Cumulic Phaeozem), which aims at understanding the effects of (1) tillage (conventionally tilled or permanent raised beds), (2) residue management (retention or removal) and (3) N fertilizer application (0 or 120 kg N/ha) on N availability in a yearly maize/wheat rotation system. Incubation experiments were conducted to establish how the different treatments affect C and N dynamics in the soil. Tillage increases the availability of soil organic matter by soil aggregate disruption, enhancing C and N mineralization. Conventionally tilled raised beds with incorporation of crop residues increased the CO2 production rate. In both tillage systems, retention of maize or wheat residue without N fertilizer application led to N immobilization. In permanent raised beds, however, the immobilization due to residue retention could be compensated by application of N fertilizer, while conventionally tilled raised beds appeared to use the applied N fertilizer less efficiently
UR  - https://hdl.handle.net/20.500.12665/178
T2  - Plant and Soil
DO  - https://doi.org/10.1007/s11104-009-9893-4
ER  -