Seven years of pig slurry fertilization: impacts on soil chemical properties and the element content of winter barley plants
| Autor: | Awais Shakoor, Àngela D. Bosch-Serra, José Ramón Olarieta Alberdi, Carmen Herrero |
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| Rok vydání: | 2022 |
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| Zdroj: | Repositorio Abierto de la UdL Universitad de Lleida |
| Popis: | Intensive pig farming produces large amounts of slurry, which is applied to agricultural soils as fertilizer. A 7-year field study was performed to check the effect of pig slurry on soil properties and on the accumulation of some essential nutrients and heavy metals in a calcareous silty-loam soil (0-0.3 m) and in barley (Hordeum vulgare L.) plants in two cropping seasons with contrasting amounts of rainfall. Five fertilization treatments, control (no N applied), mineral fertilizer (90 kg N ha(-1)), and different N doses of pig slurry (146, 281, 534 kg N ha(-1)), were applied at sowing of a barley crop. Organic carbon, available P and K, and total P in soil increased with slurry dose. No differences were found in Co, Cr, Fe, Mn, Ni, and Pb soil concentrations. Slurries increased Cu, Mn, and Zn extractions and plant concentrations of P in straw and Zn in grain. However, the lowest slurry rate was able to maintain the highest grain yields while improving fertility. The results of this research study support the sustainability of pig slurry fertilization at appropriate rates in relation to soil chemical quality. Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This work was supported by the Spanish Ministry of Economy and Competitiveness and the Spanish National Institute for Agricultural Research and Experimentation (MINECO-INIA) through the project RTA2017-88-C3-3. The author A. Shakoor received a grant from the University of Lleida for his PhD studies (from 2019 to 2022 period). |
| Databáze: | OpenAIRE |
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