Pelletized Straw Incorporation in Sandy Soil Increases Soil Aggregate Stability, Soil Carbon, and Nitrogen Stocks

In China, increasing the quantity and quality of total carbon and nitrogen stocks in sandy soil used for crop production is an important research issue. Soil amendment with pelletized straw could improve both soil physical structure and fertility in sandy soils, but these aspects remain understudied...

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Bibliographic Details
Published in:Sustainability 2023-04, Vol.15 (9), p.7079
Main Authors: Zhang, Yan, Zhao, Ji, Wang, Hongyuan, Pang, Huancheng
Format: Article
Language:English
Subjects:
Aggregates
Agricultural production
Analysis
Arid zones
Bulk density
Carbon
Carbon content
Chemical properties
Corn
Crop production
Experiments
Fertility
Fertilization
Fertilizers
Field tests
Inorganic carbon
Manures
Moisture content
Nitrogen
Organic carbon
Organic soils
Particulate organic carbon
Physicochemical properties
Sandy soils
Semi arid areas
Semiarid lands
Soil aggregates
Soil amendment
Soil chemistry
Soil conservation
Soil density
Soil depth
Soil dynamics
Soil fertility
Soil improvement
Soil profiles
Soil properties
Soil stability
Soil structure
Soil water
Soils
Stocks
Straw
Sustainability
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Summary:In China, increasing the quantity and quality of total carbon and nitrogen stocks in sandy soil used for crop production is an important research issue. Soil amendment with pelletized straw could improve both soil physical structure and fertility in sandy soils, but these aspects remain understudied. The present pot and field experiments examined the dynamic changes in sandy soil water holding capacity, soil bulk density, soil total carbon and nitrogen stocks, and the distribution of water-stable aggregates and soil total carbon stocks related to aggregates across the following treatments: no fertilization (i.e., study control (CK)), normal fertilizer rate (NM), soil amendment at 150 Mg ha−1 (S150), manure amendment at 150 Mg ha−1 (M150), pelletized straw amendment at 75 Mg ha−1 (PS75), and pelletized straw amendment at 150 Mg ha−1 (PS150). The results show that the pelletized straw incorporation significantly increased water holding capacity and decreased soil bulk density. PS150 notably increased the large macroaggregates (>2000 μm) proportion and decreased the ratio of
ISSN:2071-1050
2071-1050
DOI:10.3390/su15097079