Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern Canada
Phosphorus (P) is an essential nutrient for grassland production systems. However, continuous applications of P fertilizers result in soil P accumulations, increasing the risk of P losses in runoff and erosion. This study aims to investigate the field-scale variability of soil-test P (STP) in two co...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/11/1/24 |
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| author | Jeff D. Nze Memiaghe Athyna N. Cambouris Noura Ziadi Antoine Karam Isabelle Perron |
| author_facet | Jeff D. Nze Memiaghe Athyna N. Cambouris Noura Ziadi Antoine Karam Isabelle Perron |
| author_sort | Jeff D. Nze Memiaghe |
| collection | DOAJ |
| description | Phosphorus (P) is an essential nutrient for grassland production systems. However, continuous applications of P fertilizers result in soil P accumulations, increasing the risk of P losses in runoff and erosion. This study aims to investigate the field-scale variability of soil-test P (STP) in two contrasting grassland fields using descriptive statistics and geostatistics for accurate recommendations on soil sampling strategy and sustainable approaches to P management. A young grassland (YG; 2 years) and an old grassland (OG; 10 years under permanent pasture) were classified as humo-ferric podzol and received organic fertilizers. Soil samples were collected in 16-m by 16-m triangular grids at two depths (0–5 and 5–20 cm). They were analyzed for available P and other soil elements extracted using the Mehlich-3 method (M3). The agri-environmental P saturation index (P/Al)<sub>M3</sub> was calculated. Phosphorus accumulation was observed in OG (0–5 cm) as a result of long-term manure applications. Repeated applications of organic fertilizers can impact the long-term buildup of soil P, thus decreasing soil P va-riability and spatial dependence in permanent grasslands. A soil sampling strategy focusing on the 0–5 cm layer should be retained in permanent grasslands for sustainable P recommendations in Eastern Canada. |
| first_indexed | 2024-03-10T13:48:49Z |
| format | Article |
| id | doaj.art-db5fc3630345403aa5fbf94d25e41e11 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T13:48:49Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-db5fc3630345403aa5fbf94d25e41e112023-11-21T02:24:15ZengMDPI AGAgronomy2073-43952020-12-011112410.3390/agronomy11010024Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern CanadaJeff D. Nze Memiaghe0Athyna N. Cambouris1Noura Ziadi2Antoine Karam3Isabelle Perron4Agriculture and Agri-Food Canada, Quebec Research and Development Centre, 2560 Hochelaga Boulevard, Québec City, QC G1V 2J3, CanadaAgriculture and Agri-Food Canada, Quebec Research and Development Centre, 2560 Hochelaga Boulevard, Québec City, QC G1V 2J3, CanadaAgriculture and Agri-Food Canada, Quebec Research and Development Centre, 2560 Hochelaga Boulevard, Québec City, QC G1V 2J3, CanadaSoils and Agri-Food Engineering Department, Université Laval, 2425 rue de l’Agriculture, Québec City, QC G1V 0A6, CanadaAgriculture and Agri-Food Canada, Quebec Research and Development Centre, 2560 Hochelaga Boulevard, Québec City, QC G1V 2J3, CanadaPhosphorus (P) is an essential nutrient for grassland production systems. However, continuous applications of P fertilizers result in soil P accumulations, increasing the risk of P losses in runoff and erosion. This study aims to investigate the field-scale variability of soil-test P (STP) in two contrasting grassland fields using descriptive statistics and geostatistics for accurate recommendations on soil sampling strategy and sustainable approaches to P management. A young grassland (YG; 2 years) and an old grassland (OG; 10 years under permanent pasture) were classified as humo-ferric podzol and received organic fertilizers. Soil samples were collected in 16-m by 16-m triangular grids at two depths (0–5 and 5–20 cm). They were analyzed for available P and other soil elements extracted using the Mehlich-3 method (M3). The agri-environmental P saturation index (P/Al)<sub>M3</sub> was calculated. Phosphorus accumulation was observed in OG (0–5 cm) as a result of long-term manure applications. Repeated applications of organic fertilizers can impact the long-term buildup of soil P, thus decreasing soil P va-riability and spatial dependence in permanent grasslands. A soil sampling strategy focusing on the 0–5 cm layer should be retained in permanent grasslands for sustainable P recommendations in Eastern Canada.https://www.mdpi.com/2073-4395/11/1/24P extracted Mehlich-3(P/Al)<sub>M3</sub> indexorganic manuregeostatisticsspatial distribution mapspermanent grasslands |
| spellingShingle | Jeff D. Nze Memiaghe Athyna N. Cambouris Noura Ziadi Antoine Karam Isabelle Perron Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern Canada Agronomy P extracted Mehlich-3 (P/Al)<sub>M3</sub> index organic manure geostatistics spatial distribution maps permanent grasslands |
| title | Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern Canada |
| title_full | Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern Canada |
| title_fullStr | Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern Canada |
| title_full_unstemmed | Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern Canada |
| title_short | Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern Canada |
| title_sort | spatial variability of soil phosphorus indices under two contrasting grassland fields in eastern canada |
| topic | P extracted Mehlich-3 (P/Al)<sub>M3</sub> index organic manure geostatistics spatial distribution maps permanent grasslands |
| url | https://www.mdpi.com/2073-4395/11/1/24 |
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