Long-term effects of NPK fertilizers and organic manures on carbon stabilization and management index under rice-wheat cropping system

Chaudhary, Seema; Dheri, G. S.; Brar, B. S.

doi:10.1016/j.still.2016.10.005

Cited by 193 publications

(96 citation statements)

References 53 publications

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“…The higher level of water‐soluble fractions under N fertilization at footslope position may be due to the addition of higher amount of plant residues and microbial activity. Increased microbial activities through N fertilization may accelerate soil carbon and nitrogen decomposition and increased the water‐soluble fractions of C and N (Chaudhary, Dheri, & Brar, ). Water‐soluble fractions of organic C is a C source for soil microbes, and it is also believed to be microbially mediated (Christ & David, ); the flow of water‐soluble C fractions in soil supplies substrate for microbial biomass turnover (Benbi, Kiranvir, & Sharma, ).…”

Section: Discussionmentioning

confidence: 99%

“…decomposition and increased the water-soluble fractions of C and N (Chaudhary, Dheri, & Brar, 2017). Water-soluble fractions of organic C is a C source for soil microbes, and it is also believed to be microbially mediated (Christ & David, 1996); the flow of water-soluble C fractions in soil supplies substrate for microbial biomass turnover (Benbi, Kiranvir, & Sharma, 2015).…”

Section: Notementioning

confidence: 99%

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Soil microbial community structure and enzymatic activity responses to nitrogen management and landscape positions in switchgrass (Panicum virgatumL.)

et al. 2019

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Switchgrass (Panicum virgatum L.) is usually grown on marginal land for biofuel system, in which nitrogen (N) is an essential management practice, and landscape position is a key topographical factor in impacting the production. However, limited information is available regarding how the N application and landscape positions affect soil microbial communities and enzyme activities under switchgrass. Thus, the specific objective of this study was to evaluate the responses of N rate (high, 112 kg N/ha; medium, 56 kg N/ha; and low, 0 kg N/ha) and landscape positions (shoulder and footslope) on soil biological health under switchgrass field. Data showed that N addition significantly influenced carbon and N fractions. The hot water‐soluble organic carbon (HWC) and nitrogen (HWN) fractions were significantly higher at footslope position than the shoulder position. The amount of total phospholipid fatty acid (PLFA), total bacterial, actinomycetes, gram‐negative and gram‐positive bacteria, total fungi, arbuscular mycorrhizal (AM) fungi, and saprophytes PLFAs were highest with medium and high N rates and footslope position. The N addition increased total PLFAs in N fertilizer treatments, viz. medium (5,946 ng PLFA‐C/g soil) and high N rates (5,871 ng PLFA‐C/g soil). Microbial biomass carbon and nitrogen and enzyme activities (urease, β‐glucosidase, acid phosphatase and arylsulfatase) were significantly enhanced by N fertilization (medium and high N rates) compared to control (low N rates) under footslope position. The urease activity under medium (36.3 µmol N‐NH4+ g−1 soil hr−1) and high N rates (31.4 µmol N‐NH4+ g−1 soil hr−1) was 42.9% and 23.6% higher than low N rates, respectively. This study suggests that the application of medium N rate in footslope position to switchgrass can enhance the soil biological properties and hence can protect the environment from the excessive use of N fertilizer.

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Section: Discussionmentioning

confidence: 99%

Section: Notementioning

confidence: 99%

Soil microbial community structure and enzymatic activity responses to nitrogen management and landscape positions in switchgrass (Panicum virgatumL.)

et al. 2019

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“…() reported that CFs application significantly decreased WSC, but Chaudhary et al . () found that CFs has a positive priming effect on WSC. In this study, we found that the application of CFs with 2%M or 4%M increased WSC content, but CFs with 0.5%M decreased WSC, indicating that WSC can be affected by CM application rate and amended with CFs.…”

Section: Discussionmentioning

confidence: 94%

“…However, the response of C and N fractions and their transformations to the application of organic amendments and CFs is still intensively debated. Some studies showed a positive effect of combining organic and inorganic sources of nutrients on increasing soil C and N fractions (Mi et al ., ; Chaudhary et al ., ), whereas others have shown that the combination had no effect (Rudrappa et al ., ; Huang et al ., ). These disparities may result from variations in soil type, cropping system and the quality of the organic pool (Ding et al ., ).…”

Section: Introductionmentioning

confidence: 94%

Changes in C and N fractions with composted manure plus chemical fertilizers applied in apple orchard soil: an in‐situ field incubation study on the Loess Plateau, China

Zhao

et al. 2018

Soil Use and Management

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We investigated the effects of compost (CM), made from poultry and cattle manure with spent mushroom substrate, plus chemical fertilizers (CFs) on soil organic carbon (C) and nitrogen (N) fractions in silty loam soil of the Loess Plateau. Eight fertilizer practices were applied in a 7‐year‐old ‘Red Fuji’ apple (Malus domestica Borkh.) orchard for 360 days. Compared to CM alone, CM–CFs decreased slightly soil total organic C but increased total N by 4.3–11.6%. Notably, CM–CFs increased soil microbial biomass C (MBC) by 2.7–26.5% and microbial biomass N (MBN) by 7–13.7%. Soil water‐soluble carbon (WSC) was increased by 20.7% and 19.2% when 2% CM plus N and phosphorus (P) (2%M–NP) and 4% CM plus N and P (4%M–NP) were applied, respectively. Whereas 0.5% CM plus N and P (0.5%M–NP) increased WSC by 9.3% on day 30 but decreased it by 7.2% from 30–360 days. Hot water‐soluble C increased by 13.1–14.6% from 0–180 day, but thereafter, the effect disappeared. Compared to CFs, CM–CFs increased MBN by 35.1–115.6%, and increased alkali‐hydrolyzable‐N by 3.5–55.8% over 180–360 days of incubation. Additionally, CM–CFs promoted N mineralization, increasing NH4‐N and NO3‐N contents. Based on the changes in C and N fractions and available nutrients, 2%M–NP (45 t/ha of CM plus 450 kg/ha of N and 157.5 kg/ha of P) may be the optimal fertilizer strategy for stimulating soil microbial growth and activity, and enhancing nutrient cycling for apple growth.

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“…Incompetent nitrogen absorption raises growers' input cost and causes numerous environmental problems. Despite the environmental problems, conventional NPK fertilizers are still preferred fertilizers in agriculture as nutrients resources to the crops . But due to unreliable water flowing, the NPK fertilizers tend to fast release their nutrients to the soil environment .…”

Section: Introductionmentioning

confidence: 99%

Carbonaceous microsphere‐based superabsorbent polymer as filler for coating of NPK fertilizer: Fabrication, properties, swelling, and nitrogen release characteristics

Khan

Zakaria

Kim

et al. 2019

J of Applied Polymer Sci

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Recently, the use of controlled release fertilizers in agriculture has resulted in huge benefits in plant growth and cultivation. Superabsorbent polymer (SAP)‐coated fertilizers have the added advantage in retaining water in soil after irrigation and also reduce the nutrient release rate from soil in a controlled manner. This study aimed to produce a nitrogen–phosphorus–potassium (NPK) fertilizer coated with superabsorbent carbonaceous microspheres polymer (SPC) by inverse suspension polymerization method with water‐retention and controlled release properties. Two sets of experiments were conducted: (1) three different weight percentages and (2) different materials. NPK coated with SPC showed increasing water‐retention ability with respect to carbon microsphere percentages and retains >80% water at the 30th day of experiment compared with pure NPK and NPK coated with SAP. The slow release behavior of all samples was investigated by induced coupled plasma mass spectrometry spectrometry and results showed that NPK coated with SAP and SPC has a low release rate with <50% nutrient release compared with uncoated NPK at the 30th day. The release mechanism kinetics of NPK coated with SAP and SPC were studied based on the Kosmeyer–Peppas model. The mechanisms approached Fickian diffusion‐controlled release as the n value for both samples was less than 0.5. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48396.

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Long-term effects of NPK fertilizers and organic manures on carbon stabilization and management index under rice-wheat cropping system

Cited by 193 publications

References 53 publications

Soil microbial community structure and enzymatic activity responses to nitrogen management and landscape positions in switchgrass (Panicum virgatumL.)

Soil microbial community structure and enzymatic activity responses to nitrogen management and landscape positions in switchgrass (Panicum virgatumL.)

Changes in C and N fractions with composted manure plus chemical fertilizers applied in apple orchard soil: an in‐situ field incubation study on the Loess Plateau, China

Carbonaceous microsphere‐based superabsorbent polymer as filler for coating of NPK fertilizer: Fabrication, properties, swelling, and nitrogen release characteristics

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