Long-term changes in soil organic matter under conventional tillage and no-tillage systems in semiarid Morocco

2003 ◽  
Vol 19 (2) ◽  
pp. 139-143 ◽  
Author(s):  
F. Bessam ◽  
R. Mrabet
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Conventional Tillage ◽  
No Tillage ◽  
Tillage Systems ◽  
Long Term Changes

Soil physical attributes and organic matter accumulation under no-tillage systems in the Cerrado

Soil Research ◽  
2019 ◽  
Vol 57 (7) ◽  
pp. 712
Author(s):  
J. L. R. Torres ◽  
J. C. Mazetto Júnior ◽  
J. Silva Júnior ◽  
D. M. S. Vieira ◽  
Z. M. Souza ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Crop Production ◽  
Conventional Tillage ◽  
Native Forest ◽  
Organic Carbon Content ◽  
No Tillage ◽  
Deep Soil ◽  
Tillage Systems ◽  
Physical Attributes

Soil management has a major effect on soil physical characteristics, and consequently on soil organic matter (SOM) content, which are important for the success of crop production. The aim of this study was to evaluate the soil physical attributes and the accumulation of SOM in no-tillage systems (NTS) with different periods of implantation in a conventional tillage area and to compare them with native forest (NF) in the Cerrado biome. The experiment was planned in a 3 × 4 factorial scheme, consisting of three soil treatments (NTS for 17 years (NTS17), NTS for 5 years (NTS5) and NF) and four soil depths (0–0.1, 0.1–0.2, 0.2–0.3 and 0.3–0.4 m), with a completely randomised design and four replicates. At deep soil layers (0.2–0.4 m) the NTS17 area had a greater soil density than the NTS5 and NF areas, and greater SOM compared with the NTS5 area. Soil macroporosity in the NTS5 area was below 10% at all soil depths evaluated. The NF area had the greatest total organic carbon content (1.39 dag kg–1), stock of carbon (16.63 Mg ha--1), amount of soil organic matter (28.66 Mg ha--1) and equivalent carbon credits (60.96 Mg ha–1). Carbon stocks were similar in the NTS areas in all soil depths evaluated. The results indicate that conventional tillage areas can be successfully recovered under the Cerrado edaphoclimatic conditions with the implantation of an NTS.

Chemical composition of cover crops and soil organic matter pools in no‐tillage systems in the Cerrado

2021 ◽  
Author(s):  
Arminda Moreira de Carvalho ◽  
Luana Ramos Passos Ribeiro ◽  
Robélio Leandro Marchão ◽  
Alexsandra Duarte de Oliveira ◽  
Karina Pulrolnik ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Soil Organic Matter ◽  
Cover Crops ◽  
No Tillage ◽  
Tillage Systems

Determinants of annual fluxes of CO2 and N2O in long-term no-tillage and conventional tillage systems in northern France

2007 ◽  
Vol 95 (1-2) ◽  
pp. 133-148 ◽  
Author(s):  
Katrien Oorts ◽  
Roel Merckx ◽  
Eric Gréhan ◽  
Jérôme Labreuche ◽  
Bernard Nicolardot
Keyword(s):  
Conventional Tillage ◽  
No Tillage ◽  
Tillage Systems ◽  
Northern France

scholarly journals Characterisation of soil organic matter in long-term fallow experiment with respect to the soil hydrophobicity and wettability

2008 ◽  
Vol 2 (No. 3) ◽  
pp. 96-103 ◽  
Author(s):  
T. Šimon
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Functional Groups ◽  
Farmyard Manure ◽  
Degradation Process ◽  
Conventional Tillage ◽  
Organic Carbon Content ◽  
Hydrophobicity Index ◽  
Time Period

Soil organic matter under different tillage and fertilisation systems of long-term fallow experiment established in 1958 in Prague was characterised in period of 1972&ndash;2004. This experiment consists of seven variants (control (no tillage, no manuring); farmyard manure compost (FYM); 2FYM; mineral fertilisation (NPK); 2NPK; reduced tillage (RT), and conventional tillage (CT)). In 1989, regular manuring and tillage were terminated and since then the plots have been maintained bare. Organic carbon content (C<sub>ox</sub>) was analysed and the hydrophobic (A) and hydrophilic (B) functional groups were determined using Fourier-transform infrared (FTIR) spectroscopy. Hydrophobicity index (HI) and soil wettability (A/B ratio) were assessed in the experimental variants. A high significant positive correlation (r = 0.976; P &lt; 0.05) was found, between hydrophobic functional groups (Band A) and C<sub>ox</sub>, hydrophilic functional groups (Band B) did not correlate with C<sub>ox</sub>. Soil wettability tended to decrease after the organic manuring was finished with the result that the values of A/B ratio were significantly different according to the farmyard manure doses applied. On the contrary, HI responded to organic manuring termination later on and no significant differences were found between different farmyard manure doses. In the variants without any fertilisation, a continual decrease in both soil wettability and hydrophobicity during the selected time period was found; the degradation process is going on in these variants.

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