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

Abstract. Retardation of soil organic carbon (SOC) decay after nitrogen addition to litter or soil has been suggested in several recent studies and has been attributed to a retardation in lignin decay. With our study we tested the long-term effect of mineral nitrogen fertilization on the decay of the SOC component lignin in arable soil. To achieve this, we tracked 13C-labeled lignin and SOC in an arable soil that is part of a 36-year field experiment with two mineral nitrogen fertilization levels. We could show that nitrogen fertilization neither retarded nor enhanced the decay of old SOC or lignin over a period of 36 years, proposing that decay of lignin was less sensitive to nitrogen fertilization than previously suggested. However, for fresh biomass there were indications that lignin decay might have been enhanced by nitrogen fertilization, whereas decay of SOC was unaffected. A retardation of SOC decay due to nitrogen addition, as found in other experiments, can therefore only be explained by effects on lignin decay, if lignin was actually measured.

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Long-term effect of sediment laden Yellow River irrigation water on soil organic carbon stocks in Ningxia, China

Soil and Tillage Research ◽

10.1016/j.still.2014.09.009 ◽

2015 ◽

Vol 145 ◽

pp. 148-156 ◽

Cited By ~ 12

Author(s):

Linlin Dong ◽

Dongsheng Yu ◽

Haidong Zhang ◽

Mingli Zhang ◽

Wenhao Jin ◽

...

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Irrigation Water ◽

Yellow River ◽

Carbon Stocks ◽

Term Effect ◽

Soil Organic Carbon Stocks ◽

Long Term Effect

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Long-term effect of nutrient management on soil fertility and soil organic carbon pools under a 6-year-old pearl millet–wheat cropping system in an Inceptisol of subtropical India

Field Crops Research ◽

10.1016/j.fcr.2012.07.002 ◽

2012 ◽

Vol 136 ◽

pp. 32-41 ◽

Cited By ~ 67

Author(s):

P.C. Moharana ◽

B.M. Sharma ◽

D.R. Biswas ◽

B.S. Dwivedi ◽

R.V. Singh

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Soil Fertility ◽

Nutrient Management ◽

Cropping System ◽

Term Effect ◽

Carbon Pools ◽

Long Term Effect ◽

Soil Organic Carbon Pools

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Long-term effect of lime application on the chemical composition of soil organic carbon in acid soils varying in texture and liming history

Biology and Fertility of Soils ◽

10.1007/s00374-015-1076-2 ◽

2015 ◽

Vol 52 (3) ◽

pp. 295-306 ◽

Cited By ~ 20

Author(s):

X. Wang ◽

C. Tang ◽

J. A. Baldock ◽

C. R. Butterly ◽

C. Gazey

Keyword(s):

Chemical Composition ◽

Organic Carbon ◽

Soil Organic Carbon ◽

Acid Soils ◽

Term Effect ◽

Long Term Effect ◽

Lime Application

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Studies on Changes of Soil Carbon and Nitrogen Dynamics under Long-Term Fertilizer in the Black Soil Based on DSSAT Model

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1073-1076.1743 ◽

2014 ◽

Vol 1073-1076 ◽

pp. 1743-1750

Author(s):

Wei Guo ◽

Zhong Qing Zhang ◽

Jin Hua Liu ◽

Ping Zhu ◽

Jing Min Yang

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Carbon Content ◽

Nitrogen Content ◽

Total Nitrogen ◽

Farmyard Manure ◽

Organic Manure ◽

Organic Carbon Content ◽

Npk Fertilizer

Long-term experiment of Gongzhuling base for the study through three treatments(1)NPK: NPK fertilizer; (2)N165M: Manure and NPK fertilizer; (3)1.5M+NPK: 1.5Manure and NPK fertilizer, used DSSAT-Century soil model to study the long-term effects of different fertilizer treatments on soil organic carbon, total nitrogen content and the laws of growth and decline. The results show that: long-term application of nitrogen fertilizer can significantly improve crop yields compare with NPK.. Corn production is also affected by climatic conditions, especially in drought years with less precipitation. Larger impact of organic manure on soil organic carbon (SOC)and total nitrogen, SOC content obtained in descending order of 1.5M + N165> N165> N0 by Century model simulation. Soil organic carbon content and nitrogen content has a certain relevance, and the trend is consistent. Organic manure and inorganic fertilizer can significantly reduce soil inorganic nitrogen content and reduce the risk of nitrogen leaching. Through model simulations C / N ratio could be explained: C / N increases indicated an increase of organic carbon faster than organic nitrogen in soil, and changes of soil chronic library SOM2 determined organic carbon content. Therefore we should pay attention to organic manure carbon return level, vigorously promote the use of farmyard manure to improve soil nutrient content.

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