NDLI: Soil organic carbon fractions after 16-years of applications of fertilizers and organic manure in a Typic Rhodalfs in semi-arid tropics

Content Provider	Springer Nature Link
Author	Banger, K. Toor, G. S. Biswas, A. Sidhu, S. S. Sudhir, K.
Copyright Year	2009
Abstract	Agricultural soils can act as a potential sink of the increased carbon dioxide in the atmosphere if managed properly by application of organic manures and balanced fertilizers. However, the rate of carbon (C) sequestration in soils is low in warm climates and thus the short term changes in soil organic carbon (SOC) contents are almost negligible. Therefore, the knowledge about other C fractions that are more sensitive or responsive and indicative of the early changes in SOC can help to determine the effect of the management practices on soil C sequestration. The objective of this study was to determine the soil C sequestration after 16-years of applications of chemical fertilizers and farmyard manure (FYM) to rice (Oryza sativa)—cowpea (Vigna unguiculata) rotation system in a sandy loam soil (Typic Rhodalfs). The treatments were—(1) one control (no fertilizer or FYM); (2) three chemical fertilizer treatments [100 kg N ha−1 (N), 100 kg N ha−1 + 50 kg P2O5 ha−1 (NP), 100 kg N ha−1 + 50 kg P2O5 ha−1 + 50 kg K2O ha−1 (NPK)]; (3) one integrated treatment [(50 kg N ha−1 + 25 kg P2O5 ha−1 + 25 K2O ha−1) + (50 kg N ha−1 from FYM)]; and (4) one organic treatment at10 Mg ha−1 FYM. Compared to the control treatment, the increase in SOC was 36, 33, and 19% greater in organic, integrated, and NPK treatments. The 16-years application of fertilizers and/or FYM resulted in much greater changes in water soluble C (WSC), microbial biomass C (MBC), light fraction of C (LFC), and particulate organic matter (POM) than SOC. Of the SOC, the proportion of POM was highest (24–35%), which was followed by LFC (12–14%), MBC (4.6–6.6%), and WSC (0.6–0.8%). The application of fertilizers and/or FYM increased the mean weight diameter of soil aggregates; thus provided physical protection to SOC from decomposition. Our results suggests that the application of fertilizers and/or FYM helps to sequester C in the soil and that the labile fractions of C can be used as indicators to determine the amount of C sequestered as a result of different management practices.
Starting Page	391
Ending Page	399
Page Count	9
File Format	PDF
ISSN	13851314
Journal	Nutrient Cycling in Agroecosystems
Volume Number	86
Issue Number	3
e-ISSN	15730867
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-07-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Soil organic carbon Organic matter Farmyard manure Light fraction carbon Microbial biomass carbon Water soluble carbon Agriculture
Content Type	Text
Resource Type	Article
Subject	Agronomy and Crop Science Soil Science

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POOLS OF SOIL ORGANIC CARBON AS INFLUENCED BY FARMYARD MANURE AND CHEMICAL FERTILIZERS IN PEARL MILLET-WHEAT SEQUENCE ON A TYPIC HAPLUSTEPT

Impact of long-term additions of chemical fertilizers and farm yard manure on carbon and nitrogen sequestration under rice-cowpea cropping system in semi-arid tropics

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INFLUENCE OF ORGANIC AND MINERAL FERTILIZATION ON ORGANIC CARBON FRACTIONS, MICROBIAL PROPERTIES AND PRODUCTIVITY OF MAIZE-WHEAT CROPPING SYSTEM ON A TYPIC HAPLUSTEPT

Labile Soil Organic Matter Pools Are Influenced by 45 Years of Applied Farmyard Manure and Mineral Nitrogen in the Wheat—Pearl Millet Cropping System in the Sub-Tropical Condition

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Long-term effects of organic manures and fertilizers on soil organic carbon pools and nitrogen fractions

Changes in microbial biomass indices after 10 years of farmyard manure and vegetal fertilizer application to a sandy soil under organic management

Soil organic carbon fractions after 16-years of applications of fertilizers and organic manure in a Typic Rhodalfs in semi-arid tropics

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