Green waste compost as a substitute for turfy soil in external-soil spray seeding substrate

The scarcity of turfy soil (TS), which is the most commonly used external-soil spray seeding (ESSS) substrate component, has recently increased. The aim of this study was to introduce a substitute for TS as an organic matter additive in substrate. Green waste compost (GWC) that was combined with san...

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Bibliographic Details
Published in:Environmental technology 2021-03, Vol.42 (6), p.871-883
Main Authors: Luo, Chao, Guo, Xiaoping, Liu, Guanhong, Zhao, Tingning, Wang, Yingyu
Format: Article
Language:English
Subjects:
Bulk density
Chemical properties
Composting
Composts
Design modifications
Design parameters
Germination
Green waste compost
Infiltration rate
Loam soils
Nutrients
Optimization
Organic matter
orthogonal experiment
plant growth
Polyacrylamide
Polymers
Porosity
Principal components analysis
Rainfall
Runoff
Sandy loam
Sandy soils
Seed germination
Seeding
Seedlings
Shearing
Soil
Soil density
Soil erosion
Soil nutrients
Soil Pollutants - analysis
Soil porosity
soil properties
spray seeding
Spraying
Substitutes
Substrates
Superabsorbent polymers
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Summary:The scarcity of turfy soil (TS), which is the most commonly used external-soil spray seeding (ESSS) substrate component, has recently increased. The aim of this study was to introduce a substitute for TS as an organic matter additive in substrate. Green waste compost (GWC) that was combined with sandy loam soil, polyacrylamide (PAM), and super absorbent polymer (SAP) was used for preparing the soil substrate. Further, a modified soil-spraying experiment and artificial rainfall experiments with an orthogonal design (L 16 4 3 ) were conducted. These experiments assessed the feasibility of GWC as a component of ESSS substrate and the optimal formulation. The results indicated that the degree of influence of the three factors controlling the amended substrate is GWC > PAM > SAP. GWC improved the physical and chemical properties of the substrate, as well as the seed germination rate and seedling growth. Significant improvements can be observed with respect to the soil bulk density, soil porosity, steady infiltration rate, and anti-shearing strength (p 
ISSN:0959-3330
1479-487X
DOI:10.1080/09593330.2019.1648558