Cadmium bioavailability in surface soils receiving long-term applications of inorganic fertilizers and pig manure

Geoderma ◽  
2012 ◽  
Vol 173-174 ◽  
pp. 224-230 ◽  
Author(s):  
Longhua Wu ◽  
Changyin Tan ◽  
Ling Liu ◽  
Ping Zhu ◽  
Chang Peng ◽  
...  
Keyword(s):  
Pig Manure ◽  
Surface Soils ◽  
Inorganic Fertilizers ◽  
Cadmium Bioavailability

Phosphorus Composition and Phosphatase Activities in Soils Affected by Long-Term Application of Pig Manure and Inorganic Fertilizers

2014 ◽  
Vol 45 (14) ◽  
pp. 1866-1876 ◽  
Author(s):  
Guangna Zhang ◽  
Zhenhua Chen ◽  
Aiming Zhang ◽  
Lijun Chen ◽  
Zhijie Wu ◽  
...  
Keyword(s):  
Pig Manure ◽  
Inorganic Fertilizers ◽  
Phosphatase Activities

Molecular Speciation of Phosphorus in Soil Under Various Long-Term Fertilization Regimes

2021 ◽  
Author(s):  
Xue Li ◽  
Qiuxiang Wen ◽  
Shiyu Zhang ◽  
Na Li ◽  
Jinfeng Yang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Layer ◽  
Growth And Yield ◽  
Pig Manure ◽  
Corn Yield ◽  
Key Factors ◽  
Mineral Fertilization ◽  
Soil P ◽  
N Fertilizers

Abstract Aims The objectives of this study were to examine the long-term substitution of mineral phosphorus (P) fertilizers with manure (M) plus nitrogen (N) fertilizers and how they affect the forms of P that occur in soil, soil P distribution, and plant growth.Methods We used a solution of 31P nuclear magnetic resonance (31P-NMR) spectroscopy to study the correlations between long-term fertilization regimes and the forms of P that occur at different soil depths. Then we investigated yield, plant growth, and soil properties.Results A 40-year field experiment showed that the use of M + N fertilizers can significantly improve plant growth and yield. The proportion of organic P in the 20-40 cm soil layer was significantly increased by long-term M fertilization. The concentrations of various forms of P (orthophosphate, pyrophosphate, diesters, monoesters, and total inositol hexakisphosphate, IHP) in topsoil increased significantly with the combination of M with N + P mineral fertilization. The addition of M greatly increased the stereoisomers of IHP (myo-IHP, scyllo-IHP, neo-IHP, and D-chiro-IHP) and the proportion and concentration of corrected diesters. There were no significant differences in the pyrophosphate contents of the 40-60 cm soil layer according to fertilization type and year of fertilization. There were also no significant differences in IHP stereoisomers and diesters according to fertilization year. The P forms that contributed to corn yield were orthophosphate, diester, and IHP. Further, pyrophosphate made no significant contribution to corn growth. Conclusions Over the long-term, pig manure can significantly increase the amount of orthophosphate that is directly absorbed by crops and the amount of IHP stereoisomers that can be used by plants. Orthophosphate and IHP are the two key factors that have a positive effect on plant growth.

Episodic basin-scale soil moisture anomalies associated with high relative humidity events in the McMurdo Dry Valleys, Antarctica

2021 ◽  
pp. 1-15
Author(s):  
Joseph Levy
Keyword(s):  
Soil Moisture ◽  
Relative Humidity ◽  
Mcmurdo Dry Valleys ◽  
Limiting Factor ◽  
High Humidity ◽  
Dry Valleys ◽  
Surface Soils ◽  
Basin Scale ◽  
Soil Reflectance

Abstract Outside of hydrologically wetted active layer soils and humidity-sensitive soil brines, low soil moisture is a limiting factor controlling biogeochemical processes in the McMurdo Dry Valleys. But anecdotal field observations suggest that episodic wetting and darkening of surface soils in the absence of snowmelt occurs during high humidity conditions. Here, I analyse long-term meteorological station data to determine whether soil-darkening episodes are present in the instrumental record and whether they are, in fact, correlated with relative humidity. A strong linear correlation is found between relative humidity and soil reflectance at the Lake Bonney long-term autonomous weather station. Soil reflectance is found to decrease annually by a median of 27.7% in response to high humidity conditions. This magnitude of darkening is consistent with soil moisture rising from typical background values of < 0.5 wt.% to 2–3 wt.%, suggesting that regional atmospheric processes may result in widespread soil moisture generation in otherwise dry surface soils. Temperature and relative humidity conditions under which darkening is observed occur for hundreds of hours per year, but are dominated by episodes occurring between midnight and 07h00 local time, suggesting that wetting events may be common, but are not widely observed during typical diel science operations.

Unexpected bulk density and microstructures response to long-term pig manure application in a Ferralic Cambisol Soil: Implications for rebuilding a healthy soil

2020 ◽  
Vol 203 ◽  
pp. 104668
Author(s):  
Guang-Hui Yu ◽  
Chun-Mei Chen ◽  
Xin-Hua He ◽  
Xiang-Zhi Zhang ◽  
Li-Na Li
Keyword(s):  
Bulk Density ◽  
Pig Manure ◽  
Manure Application

Soil chemical and biological properties affected by 21-year application of composted manure with chemical fertilizers in a Chinese Mollisol

2012 ◽  
Vol 92 (3) ◽  
pp. 419-428 ◽  
Author(s):  
X. H. Li ◽  
X. Z. Han ◽  
H. B. Li ◽  
C. Song ◽  
J. Yan ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Ph ◽  
Enzyme Activities ◽  
Microbial Biomass Carbon ◽  
Biological Properties ◽  
Pig Manure ◽  
Chemical Fertilizers ◽  
Total N ◽  
Available N

Li, X. H., Han, X. Z., Li, H. B., Song, C., Yan, J. and Liang, Y. 2012. Soil chemical and biological properties affected by 21-year application of composted manure with chemical fertilizers in a Chinese Mollisol. Can. J. Soil Sci. 92: 419–428. The effects of 21-yr of application of chemical fertilizers, composted pig manure (CPM) alone, and chemical fertilizers combined with compost on soil chemical and biological properties were investigated. Soil samples (0–20cm) were collected from a long-term fertilization experiment under corn (Zea mays L.) production in 2006, prior to seeding, at the corn tasseling stage and following harvest. Fertilizer treatments were: no fertilizer (CK), nitrogen fertilizer alone (N), N + phosphorus (NP), N + P + potassium (NPK), CPM, N + CPM, N + P + CPM (NP + CPM), and N + P + K + CPM (NPK + CPM). Long-term application of N alone resulted in a reduction of soil pH by 0.38 units and reduced the available P concentration compared with CK. An increase in soil pH was seen with CPM alone and NPK + CPM. Both fertilizers sources, singly and combined, increased the total N and available N concentrations. Total P and total K concentrations were greatest with the NPK + CPM treatment. All fertilizer treatments increased the soil organic carbon (SOC), light fraction organic carbon (LFOC) and microbial biomass carbon (MBC) concentrations significantly (P < 0.05) at the tasseling stage. The NPK + CPM treatment showed the greatest increase in SOC (12%), LFOC (78%) and MBC (44%) concentrations, compared with CK. Soil enzyme activities (invertase, urease, acid and alkaline phosphatases) tended to be greater at tasseling than other sampling dates, with highest enzyme activities in the NPK + CPM treatments. These findings suggest that a long-term application of CPM combined with NPK is an efficient strategy to maintain or increase soil quality in Mollisols for sustainable agriculture.

scholarly journals Effect of Pig and Cattle Slurry Application on Heavy Metal Composition of Maize Grown on Different Soils

2018 ◽  
Vol 10 (8) ◽  
pp. 2684 ◽  
Author(s):  
Giorgio Provolo ◽  
Giulia Manuli ◽  
Alberto Finzi ◽  
Giorgio Lucchini ◽  
Elisabetta Riva ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Fertilizer ◽  
Pig Manure ◽  
Soil Enrichment ◽  
Maize Cultivation ◽  
Time Required ◽  
Cu And Zn ◽  
Different Soils

Cattle and pig manure contain useful mineral nutrients (N, P, and K) and are therefore used as organic fertilizer. However, excessive applications of manure can cause environmental problems and threaten animal and human health because these materials also hold significant amounts of heavy metals, particularly Cu and Zn. To assess the potential risk due to the increased concentrations of heavy metals (Cu, Mn, Zn, and Cr) in a harvested crop, two maize hybrids were grown in pots on four different soils with three different fertilisers (urea, pig manure, and cattle manure). Both soil and manure characteristics influenced the heavy metal concentrations in the plant shoots. Organic fertilisation strongly interacted with the soils and, in general, reduced the shoot content of Cu, Mn, and Zn. A preliminary assessment of the heavy metal balance of the agricultural systems based on the intensive livestock production and maize cultivation showed that the potential soil enrichment of the long-term application of livestock manure arises mainly from the application of pig slurries that have a high content of Cu and Zn. The time required to apply an amount of metal that is equal to the initial soil content is 60–300 years for Zn and 240–450 years for Cu, depending on the soil type and the initial heavy metal content.

scholarly journals Abundance and morphology of microplastics in an agricultural soil following long-term repeated application of pig manure

2020 ◽  
pp. 116028
Author(s):  
Jie Yang ◽  
Ruijie Li ◽  
Qian Zhou ◽  
Lianzhen Li ◽  
Yuan Li ◽  
...  
Keyword(s):  
Agricultural Soil ◽  
Pig Manure ◽  
Repeated Application
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