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@ARTICLE{DossouYovo:280328,
author = {Dossou-Yovo, Elliott Ronald and Brüggemann, Nicolas and
Jesse, Naab and Huat, Joël and Ago, Expedit Evariste and
Agbossou, Euloge Kossi},
title = {{R}educing soil {CO}$_{2}$ emission and improving upland
rice yield with no-tillage, straw mulch and nitrogen
fertilization in northern {B}enin},
journal = {Soil $\&$ tillage research},
volume = {156},
issn = {0167-1987},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2016-00112},
pages = {44 - 53},
year = {2016},
abstract = {To explore effective ways to decrease soil CO2 emission and
increase grain yield, field experiments were conducted on
two upland rice soils (Lixisols and Gleyic Luvisols) in
northern Benin in West Africa. The treatments were two
tillage systems (no-tillage, and manual tillage), two rice
straw managements (no rice straw, and rice straw mulch at 3
Mg ha−1) and three nitrogen fertilizers levels (no
nitrogen, recommended level of nitrogen: 60 kg ha−1, and
high level of nitrogen: 120 kg ha−1). Potassium and
phosphorus fertilizers were applied to be non-limiting at 40
kg K2O ha−1 and 40 kg P2O5 ha−1. Four replications of
the twelve treatment combinations were arranged in a
randomized complete block design. Soil CO2 emission, soil
moisture and soil temperature were measured at 5 cm depth in
6–10 days intervals during the rainy season and every two
weeks during the dry season. Soil moisture was the main
factor explaining the seasonal variability of soil CO2
emission. Much larger soil CO2 emissions were found in rainy
than dry season. No-tillage significantly reduced soil CO2
emissions compared with manual tillage. Higher soil CO2
emissions were recorded in the mulched treatments. Soil CO2
emissions were higher in fertilized treatments compared with
non-fertilized treatments. Rice biomass and yield were not
significantly different as a function of tillage systems. On
the contrary, rice biomass and yield significantly increased
with application of rice straw mulch and nitrogen
fertilizer. The highest response of rice yield to nitrogen
fertilizer addition was obtained for 60 kg N ha−1 in
combination with 3 Mg ha−1 of rice straw for the two
tillage systems. Soil CO2 emission per unit grain yield was
lower under no-tillage, rice straw mulch and nitrogen
fertilizer treatments. No-tillage combined with rice straw
mulch and 60 kg N ha−1 could be used by smallholder
farmers to achieve higher grain yield and lower soil CO2
emission in upland rice fields in northern Benin.},
cin = {IBG-3},
ddc = {630},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000367492800005},
doi = {10.1016/j.still.2015.10.001},
url = {https://juser.fz-juelich.de/record/280328},
}