Comparative effects of food processing liquid slurry and inorganic fertilizers on tanner grass (Brachiaria arrecta ) pasture: grass yield, crude protein and P levels and residual soil N and P
| Autor: | G. G. Gouveia, G. D. Eudoxie, M. St. Luce |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
biology
Phosphorus Randomized block design chemistry.chemical_element Soil classification Forage 04 agricultural and veterinary sciences 010501 environmental sciences Management Monitoring Policy and Law engineering.material biology.organism_classification 01 natural sciences Brachiaria Agronomy chemistry Loam 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Dry matter Fertilizer Agronomy and Crop Science 0105 earth and related environmental sciences |
| Zdroj: | Grass and Forage Science. 72:401-413 |
| ISSN: | 0142-5242 |
| DOI: | 10.1111/gfs.12240 |
| Popis: | This small-plot field study evaluated food processing liquid slurry (FPLS) as a potential fertilizer for tanner grass (Brachiaria arrecta) production on an acidic loam soil. The treatments, arranged in a randomized complete block design with three replicates, consisted of an unfertilized control, inorganic fertilizer applied at 50 and 200 kg nitrogen (N) ha−1 with and without phosphorus (P) at 50 kg P ha−1, and FPLS applied at 50 and 200 kg N ha−1. Compared to the unfertilized control, the FPLS applied at 200 kg N ha−1 significantly increased grass dry-matter yield (DMY), herbage crude protein (CP) and P content, and N and P uptake in the second of two trials and P uptake in both trials. However, DMY and contents, of CP and P were generally lower for the FPLS treatments compared to the inorganic fertilizers. Apparent N recovery was higher for the inorganic fertilizer treatments than FPLS treatments in trial 1, while apparent P recovery was similar among all treatments in both trials. The FPLS treatments did not significantly increase soil NO3-N and P concentrations, but increased NH4-N in the 0–15 cm layer. The results suggest that application of FPLS to tanner grass pastures is an alternative to its disposal in landfill. |
| Databáze: | OpenAIRE |
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