Amendment with industrial and agricultural wastes reduces surface-water nutrient loss and storage of dissolved greenhouse gases in a subtropical paddy field

Wang, W.; Zeng, Chen; Sardans, Jordi; Wang, C.; Zeng, Dongping; Peñuelas, Josep

doi:10.1016/j.agee.2016.07.012

Cited by 17 publications

(9 citation statements)

References 43 publications

(52 reference statements)

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“…The soil of the rice paddy field was poorly drained, and the proportions of sand, silt and clay particles in the top soil (15 cm surface soil) were 28, 60 and 12%, respectively (Wang et al, 2016a). Other surface-soil properties were: bulk density 1.1 g cm -3 , pH (1:5 soil:H2O) 6.5, organic carbon 18.1 g kg −1 , total nitrogen (N) 1.2 g kg -1 and total phosphorus (P) 1.1 g kg -1 (Wang et al, 2015b, c).…”

Section: Study Area and Experimental Fieldsmentioning

confidence: 99%

Responses of greenhouse-gas emissions to land-use change from rice to jasmine production in subtropical China

Chün

Min

et al. 2019

Atmospheric Environment

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Section: Study Area and Experimental Fieldsmentioning

confidence: 99%

Responses of greenhouse-gas emissions to land-use change from rice to jasmine production in subtropical China

Chün

Min

et al. 2019

Atmospheric Environment

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“…One would argue that a continuous application of wastes in the paddy field could decrease soil bulk density and consequently raise soil pore diameter, increasing the loss of water and nutrients and being detrimental to rice growth (Zhao, 2012). However, 8 Mg ha −1 waste amendment had increased the water content and porewater nutrient concentrations (Wang et al ., 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The rice biochar was rich in N, which increased soil N-concentration in biochar amendment plots (Wang et al unpublished data, Wang et al, 2016) and lead to higher grain yield as compared to the control plot. Moreover, the application to soil of all the studied wastes is able to increase soil N, P and S availability in porewater and also to prevent the losses of these elements by leaching (Wang et al, 2016), improving soil fertility.…”

Section: Best Management Practices To Reduce Gwpmentioning

confidence: 97%

Industrial and Agricultural Wastes Decreased Greenhouse-Gas Emissions and Increased Rice Grain Yield in a Subtropical Paddy Field

et al. 2017

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SUMMARYReducing the emissions of greenhouse gases (GHG) from paddy fields is crucial both for the sustainability of rice production and mitigation of global climatic warming. The effects of applying industrial and agricultural wastes as fertilizer on the reduction of GHG emissions in cropland areas, however, remain poorly known. We studied the effects of the application of 8 Mg ha−1 of diverse wastes on GHG emission and rice yield in a subtropical paddy in southeastern China. Plots fertilized with steel slag, biochar, shell slag, gypsum slag and silicate and calcium fertilizer had lower total global-warming potentials (GWP, including CO2, CH4 and N2O emissions) per unit area than control plots without waste application despite non-significant differences among these treatments. Structural equation models showed that the effects of these fertilization treatments on gas emissions were partially due to their effects on soil variables, such as soil water content or soil salinity. Steel slag, biochar and shell slag increased rice yield by 7.1%, 15.5% and 6.5%, respectively. The biochar amendment had a 40% lower GWP by Mg−1 yield production, relative to the control. These results thus encourage further studies of the suitability of the use waste materials as fertilizers in other different types of paddy field as a way to mitigate GHG emissions and increase crop yield.

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“…However, we cannot discard the possible potential impacts of slag on soil, groundwater and wildlife or food quality, which must be monitored in agricultural systems. Until now, we have not detected significant impacts of steel slag when considering the most dangerous trace elements (Wang et al ., 2015, 2016). However, some negative environmental impacts associated with the use of steel slag at soil and superficial water level have been detected in other regions of China (Meng and Liu, 2000).…”

Section: Discussionmentioning

confidence: 99%

Steel Slag Amendment Increases Nutrient Availability and Rice Yield in a Subtropical Paddy Field in China

et al. 2017

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SUMMARYRice is the main food for most of the human population, so sustainable rice production is very important for food security. The fertility of the soil in paddy fields is the key factor controlling rice growth and production. Steel slag amendment is becoming an effective method to increase the soil fertility, stabilize rice production and reduce greenhouse-gas emissions in Asiatic paddy fields (i.e. Korea, Japan, Bangladesh and China). We studied the relationships of steel slag amendment with plant–soil nutrient allocation, stoichiometry and rice yield in a paddy field in subtropical China. Amendment was associated with higher soil N and P availability, lower available-N:available-P ratio and higher available Ca and Si concentrations. Increases in P, Ca and Mg availability were correlated with high yields. High yields under steel slag amendment were also associated with high foliar and stem N and P concentrations and lower N:P ratios and with high shoot/root N and P concentration ratios, traits that are typically associated with productive ecosystems able to support species with high growth rates. The positive correlation between steel slag application and yield was partially due to an indirect effect (35% of the total effect) of enhancement of soil Ca, Si and P availability, which were positively correlated with yield. Steel slag amendment in this paddy field increased plant growth and yield by enhancing nutrient availability, altering soil and plant stoichiometry and shifting stem:root nutrient allocation.

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Amendment with industrial and agricultural wastes reduces surface-water nutrient loss and storage of dissolved greenhouse gases in a subtropical paddy field

Cited by 17 publications

References 43 publications

Responses of greenhouse-gas emissions to land-use change from rice to jasmine production in subtropical China

Responses of greenhouse-gas emissions to land-use change from rice to jasmine production in subtropical China

Industrial and Agricultural Wastes Decreased Greenhouse-Gas Emissions and Increased Rice Grain Yield in a Subtropical Paddy Field

Steel Slag Amendment Increases Nutrient Availability and Rice Yield in a Subtropical Paddy Field in China

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