The Distribution of Soil Micro-Nutrients and the Effects on Herbage Micro-Nutrient Uptake and Yield in Three Different Pasture Systems
| Autor: | Stephan M. Haefele, Tegan Darch, Paul Harris, D. A. Beaumont, Cathy L. Thomas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
geography
business.product_category geography.geographical_feature_category Chemistry Soil organic matter legumes Biomass chemistry.chemical_element Agriculture engineering.material micro-nutrients yield SOM Pasture Nitrogen Plough Animal science uptake Nitrogen fixation engineering Fertilizer business Agronomy and Crop Science Legume |
| Zdroj: | Agronomy Volume 11 Issue 9 Agronomy, Vol 11, Iss 1731, p 1731 (2021) |
| ISSN: | 2073-4395 |
| DOI: | 10.3390/agronomy11091731 |
| Popis: | Pasture micro-nutrient concentrations are often deficient for herbage productivity and the health of livestock. The aim of this study was to investigate soil and herbage micro-nutrient content and the effects on yield on the three pasture systems of the North Wyke Farm Platform (NWFP): high-sugar grass + legume mix minus nitrogen (N) fertilizer (blue/HSG + L) permanent pasture plus N fertilizer (green/P + N) high-sugar grass plus N fertilizer (red/HSG + N). The locations with high soil total micro-nutrient concentrations had a greater slope and higher soil organic matter (SOM) content. Herbage micro-nutrient concentrations were often greater at the locations with high soil total micro-nutrient concentrations. The concentration and uptake of nearly all micro-nutrients was greatest in the herbage of the green/P + N system, which had the highest SOM content, whereas they were often lowest in the red/HSG + N system, which had the lowest SOM and the highest yield, indicating biomass dilution of micro-nutrients in the herbage. At the locations with high soil micro-nutrient concentrations, yield was higher than at locations with low micro-nutrient concentrations, and was equal across the three pasture systems, regardless of fertilizer N treatment. Variation in micro-nutrient uptake/yield in the blue grass–legume system was predominantly explained by the soil molybdenum (Mo) concentration, possibly relating to the requirement for Mo in biological nitrogen fixation. There was, therefore, a trade-off in ploughing and re-seeding for higher yield, with the maintenance of SOM being important for herbage micro-nutrient content. |
| Databáze: | OpenAIRE |
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