Soil C and N dynamics and maize (Zea may L.) yield as affected by cropping systems and residue management in North-western Pakistan

2007 ◽  
Vol 94 (2) ◽  
pp. 520-529 ◽  
Author(s):  
M SHAFI ◽  
J BAKHT ◽  
M JAN ◽  
Z SHAH
Keyword(s):  
Cropping Systems ◽  
Residue Management ◽  
N Dynamics ◽  
Soil C ◽  
Zea May ◽  
Soil C And N ◽  
C And N ◽  
North Western ◽  
C And N Dynamics

Conventionally Tilled and Permanent Raised Beds with Different Crop Residue Management: Effects on Soil C and N Dynamics

2006 ◽  
Vol 280 (1-2) ◽  
pp. 143-155 ◽  
Author(s):  
B. Govaerts ◽  
K. D. Sayre ◽  
J. M. Ceballos-Ramirez ◽  
M. L. Luna-Guido ◽  
A. Limon-Ortega ◽  
...  
Keyword(s):  
Crop Residue ◽  
Residue Management ◽  
N Dynamics ◽  
Crop Residue Management ◽  
Soil C ◽  
Soil C And N ◽  
C And N ◽  
Management Effects ◽  
C And N Dynamics

Contrasting soil C and N dynamics inferred from δ13C and δ15N values along a climatic gradient in southern China

2020 ◽  
Vol 452 (1-2) ◽  
pp. 217-231
Author(s):  
Jiao Feng ◽  
Fan Yang ◽  
Junjun Wu ◽  
Qiong Chen ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Southern China ◽  
Climatic Gradient ◽  
N Dynamics ◽  
Δ13c And Δ15n ◽  
Soil C ◽  
Soil C And N ◽  
C And N ◽  
C And N Dynamics

scholarly journals Vertisols and Cambisols had contrasting short term greenhouse gas responses to crop residue management

2020 ◽  
Vol 66 (No. 5) ◽  
pp. 222-233 ◽  
Author(s):  
Giuseppe Badagliacca ◽  
Robert Martin Rees ◽  
Dario Giambalvo ◽  
Sergio Saia
Keyword(s):  
Faba Bean ◽  
Crop Residues ◽  
Residue Management ◽  
Short Term ◽  
N Dynamics ◽  
Total N ◽  
Soil C ◽  
Residue Decomposition ◽  
Soil C And N ◽  
C And N

In sustainable agriculture crop residues management should consider the interactions between soil and residue properties, which can affect the decomposition and global greenhouse gases (GHGs) emission. Through a laboratory experiment, we investigated the effect of the management (incorporation and surface placement) of wheat and faba bean residues on their decomposition and CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O emissions from two soils, a Chromic Vertisol and an Eutric Cambisol. In the Vertisol, wheat residues increased the CO<sub>2</sub> emission more than faba bean when left on the surface whereas no differences among residues were observed when incorporated. In the Cambisol, faba bean emitted more than wheat when left in the surface and less when incorporated. Total CH<sub>4</sub> emissions were higher in faba bean in Cambisol for both management and only when applied in the surface in Vertisol. Total N<sub>2</sub>O emission in the Vertisol was higher when faba bean was incorporated, and wheat was left on the surface. In the Cambisol, wheat addition increased total N<sub>2</sub>O emissions by 20% compared to faba bean, with no differences between managements. Our study confirmed that contrasting properties among tested soils resulted in significant interactions with residues own degradability and their placement affecting residue decomposition, soil C and N dynamics, and GHGs emission.

scholarly journals Trade-offs between the short- and long-term effects of residue quality on soil C and N dynamics

2010 ◽  
Vol 338 (1-2) ◽  
pp. 159-169 ◽  
Author(s):  
Roberta Gentile ◽  
Bernard Vanlauwe ◽  
Pauline Chivenge ◽  
Johan Six
Keyword(s):  
Residue Quality ◽  
Long Term Effects ◽  
N Dynamics ◽  
Soil C ◽  
Trade Offs ◽  
Short And Long Term ◽  
Soil C And N ◽  
C And N ◽  
C And N Dynamics

scholarly journals Effect of elevated tropospheric ozone on soil carbon and nitrogen: A meta-analysis

2022 ◽  
Author(s):  
Enzhu Hu ◽  
Zhimin Ren ◽  
Xiaoke Wang ◽  
Hongxing Zhang ◽  
Weiwei Zhang
Keyword(s):  
Tropospheric Ozone ◽  
Terrestrial Ecosystem ◽  
Soil N ◽  
N Dynamics ◽  
Organic C ◽  
Soil C ◽  
Soil C And N ◽  
C And N ◽  
The Impact ◽  
C And N Dynamics

Abstract Elevated tropospheric ozone concentration ([O3]) may substantially influence the belowground processes of the terrestrial ecosystem. Nevertheless, a comprehensive and quantitative understanding of the responses of soil C and N dynamics to elevated [O3] remains elusive. In this study, the results of 41 peer-reviewed studies were synthesized using meta-analytic techniques, to quantify the impact of O3 on ten variables associated with soil C and N, i.e., total C (TC, including soil organic C), total N (TN), dissolved organic C (DOC), ammonia N (NH4 +), nitrate N (NO3 -), microbial biomass C (MBC) and N (MBN), rates of nitrification (NTF) and denitrification (DNF), as well as C/N ratio. The results depicted that all these variables showed significant changes (P < 0.05) with [O3] increased by 27.6 ± 18.7 nL/L (mean ± SD), including decreases in TC, DOC, TN, NH4 +, MBC, MBN and NTF, and increases in C/N, NO3 - and DNF. The effect sizes of TN, NTF, and DNF were significantly correlated with O3 fumigation level and experimental duration (P < 0.05). Soil pH and climate were essential in analyses of O3 impacts on soil C and N. However, the responses of most variables to elevated [O3] were generally independent of O3 fumigation method, terrestrial ecosystem type, and additional [CO2] exposure. The altered soil C and N dynamics under elevated [O3] may reduce its C sink capacity, and change soil N availability thus impact plant growth and enhance soil N losses.

Soil C and N dynamics induced by leaf-litter decomposition of shrubs and perennial grasses of the Patagonian Monte

2006 ◽  
Vol 38 (8) ◽  
pp. 2401-2410 ◽  
Author(s):  
Dariana N. Vargas ◽  
Mónica B. Bertiller ◽  
Jorge O. Ares ◽  
Analía L. Carrera ◽  
Claudia L. Sain
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Perennial Grasses ◽  
Leaf Litter Decomposition ◽  
N Dynamics ◽  
Soil C ◽  
Soil C And N ◽  
C And N ◽  
C And N Dynamics

The effects of gaps and liming on forest floor decomposition and soil C and N dynamics in a Fagus sylvatica forest

2004 ◽  
Vol 34 (3) ◽  
pp. 509-518 ◽  
Author(s):  
J Bauhus ◽  
T Vor ◽  
N Bartsch ◽  
A Cowling
Keyword(s):  
Fagus Sylvatica ◽  
Forest Floor ◽  
Mineral Soil ◽  
N Dynamics ◽  
Soil C ◽  
Soil C And N ◽  
C And N ◽  
C And N Pools ◽  
Gap Creation ◽  
C And N Dynamics

Despite the importance of gaps in the dynamics and management of many forest types, very little is known about the medium- to long-term soil C and N dynamics associated with this disturbance. This study was designed to test the hypothesis that gap creation and lime application, a routine measure in many European forests to ameliorate soil acidity, lead to accelerated litter decomposition and thus a reduction in the forest floor and soil C and N pools. Four gaps were created in 1989 in a mature European beech (Fagus sylvatica L.) forest on acid soil with a moder humus, and lime (3 t dolomite·ha–1) was applied to two of these and surrounding areas. Litter and fine-root decomposition was measured in 1992–1993 and 1996–1998 using litterbags. Forest floor (L, F, and H layers) and mineral soil (0–40 cm) C and N pools were determined in 1989 and 1997. Eight years following silvicultural treatments, there was no change in C and N over the entire forest soil profile including forest floor. Reductions in the F and H layers in limed gaps were compensated for by increases in soil C and N in the surface (0–10 cm) mineral soil. Decomposition of F litter was significantly accelerated in limed gaps, leading to the development of a mull–moder, whereas gap creation alone had no effect on mass loss of F material in litterbags. Gap size disturbances in this acid beech forest appear to have minimal influences on soil C and N stocks. However, when combined with liming, changes in the humus form and vertical distribution of soil C and N may occur.

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