Long-term effects of tillage, cover crops, and nitrogen fertilization on organic carbon and nitrogen concentrations in sandy loam soils in Georgia, USA

2002 ◽  
Vol 63 (3-4) ◽  
pp. 167-179 ◽  
Author(s):  
U.M Sainju ◽  
B.P Singh ◽  
W.F Whitehead
Keyword(s):  
Organic Carbon ◽  
Cover Crops ◽  
Nitrogen Fertilization ◽  
Sandy Loam ◽  
Long Term Effects ◽  
Carbon And Nitrogen ◽  
Nitrogen Concentrations

Long-term effects of harvest residue management on soil total carbon and nitrogen concentrations of a replanted Chinese fir plantation

2013 ◽  
Vol 33 (13) ◽  
pp. 4205-4213
Author(s):  
胡振宏 HU Zhenhong ◽  
何宗明 HE Zongming ◽  
范少辉 FAN Shaohui ◽  
黄志群 HUANG Zhiqun ◽  
万晓华 WAN Xiaohua ◽  
...  
Keyword(s):  
Chinese Fir ◽  
Residue Management ◽  
Total Carbon ◽  
Long Term Effects ◽  
Carbon And Nitrogen ◽  
Nitrogen Concentrations ◽  
Chinese Fir Plantation ◽  
Harvest Residue

scholarly journals Long-term effect of tillage, nitrogen fertilization and cover crops on soil organic carbon and total nitrogen content

2011 ◽  
Vol 114 (2) ◽  
pp. 165-174 ◽  
Author(s):  
Marco Mazzoncini ◽  
Tek Bahadur Sapkota ◽  
Paolo Bàrberi ◽  
Daniele Antichi ◽  
Rosalba Risaliti
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Nitrogen Content ◽  
Total Nitrogen ◽  
Cover Crops ◽  
Nitrogen Fertilization ◽  
Term Effect ◽  
Total Nitrogen Content ◽  
Long Term Effect

Long-Term Effects of Clipping and Nitrogen Management in Turfgrass on Soil Organic Carbon and Nitrogen Dynamics

2003 ◽  
Vol 32 (5) ◽  
pp. 1694-1700 ◽  
Author(s):  
Y. L. Qian ◽  
W. Bandaranayake ◽  
W. J. Parton ◽  
B. Mecham ◽  
M. A. Harivandi ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Nitrogen Dynamics ◽  
Nitrogen Management ◽  
Long Term Effects ◽  
Carbon And Nitrogen ◽  
Carbon And Nitrogen Dynamics

scholarly journals Impacts of land use change in soil carbon and nitrogen in a Mediterranean agricultural area (Southern Spain)

Solid Earth ◽  
2013 ◽  
Vol 4 (1) ◽  
pp. 167-177 ◽  
Author(s):  
L. Parras-Alcántara ◽  
M. Martín-Carrillo ◽  
B. Lozano-García
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Land Use Change ◽  
Total Nitrogen ◽  
Negative Impact ◽  
Long Term Effects ◽  
Arable Crops ◽  
Carbon And Nitrogen ◽  
Soc Stock

Abstract. The agricultural Mediterranean areas are dedicated to arable crops (AC), but in the last decades, a significant number of AC has led to a land use change (LUC) to olive grove (OG) and vineyards (V). A field study was conducted to determine the long-term effects (46 years) of LUC (AC by OG and V) and to determine soil organic carbon (SOC), total nitrogen (TN), C : N ratio and their stratification across the soil entire profile, in Montilla-Moriles denomination of origin (D.O.), in Calcic-Chromic Luvisols (LVcc/cr), an area under semiarid Mediterranean conditions. The experimental design consisted of studying the LUC on one farm between 1965 and 2011. Originally, only AC was farmed in 1965, but OG and V were farmed up to now (2011). This LUC principally affected the horizon thickness, texture, bulk density, pH, organic matter, organic carbon, total nitrogen and C : N ratio. The LUC had a negative impact in the soil, affecting the SOC and TN stocks. The conversion from AC to V and OG involved the loss of the SOC stock (52.7% and 64.9% to V and OG respectively) and the loss of the TN stock (42.6% and 38.1% to V and OG respectively). With respect to the stratification ratios (SRs), the effects were opposite; 46 years after LUC increased the SRs (in V and OG) of SOC, TN and C : N ratio.

scholarly journals Effects of Organic Energy Crop Rotations and Fertilisation with the Liquid Digestate Phase on Organic Carbon in the Topsoil

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1393
Author(s):  
Karin S. Levin ◽  
Karl Auerswald ◽  
Hans Jürgen Reents ◽  
Kurt-Jürgen Hülsbergen
Keyword(s):  
Organic Carbon ◽  
Organic Farming ◽  
Biogas Production ◽  
Crop Rotations ◽  
Energy Crop ◽  
Long Term Effects ◽  
Liquid Digestate ◽  
Organic Farmers ◽  
Positive Effect

Combining organic farming and biogas production from agricultural feedstocks has been suggested as a way of achieving carbon (C) neutrality in Europe. However, as the long-term effects of C removal for methane production on soil organic carbon (SOC) are unclear, organic farmers in particular have questioned whether farm biogas production will have a positive effect on soil fertility. Eight years of data from an organic long-term field trial involving digestate fertilisation and various crop rotations (CRs) with differing proportions of clover-grass leys were used to calculate C inputs based on the CANDY model, and these modelled changes compared with measured changes in SOC content (SOCc) over the same period. Measured SOCc increased by nearly 20% over the eight years. Digestate fertilisation significantly increased SOCc. Fertilised plots with the highest proportion of clover-grass in the CR had the highest SOCc. The C inputs from clover-grass leys, even if they only made up 25% of the CR, were high enough to increase SOCc, even with the removal of all aboveground biomass and without fertilisation. Our results show that biogas production based on clover-grass leys could be an important part of sustainable farming, improving or maintaining SOCc and improving nutrient flows, particularly in organic farming, while simultaneously providing renewable energy.

Long-term effects of preplant liming on apple trees and soil cation levels

1991 ◽  
Vol 71 (4) ◽  
pp. 545-549
Author(s):  
G. H. Neilsen ◽  
E. J. Hogue ◽  
P. B. Hoyt
Keyword(s):  
Calcium Hydroxide ◽  
Apple Tree ◽  
Sandy Loam ◽  
Long Term Effects ◽  
Apple Trees ◽  
Orchard Soil ◽  
Lime Application ◽  
Over Time ◽  
Key Words Apple

Nine years after liming a sandy loam orchard soil to pH 6.0 with calcium hydroxide or dolomitic lime, pH and extractable Ca and Mg were still higher where limed than where unlimed. However, pH had decreased below 5.0 in the limed and N-fertilized plots. Delicious (Malus domestica Borkh.) apple tree nutrition benefited from the two soil amendments. Leaf Mg was increased by dolomite. Leaf Ca was increased by calcium hydroxide. Leaf Mn, although highest in unlimed soils, increased over time for both limed and unlimed soil. Key words: Apple, lime application, reacidification

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