The response of winter barley (Hordeum vulgare) and forage maize (Zea mays) crops to polyhalite, a multi-nutrient fertilizer
| Autor: | J. J. J. Wiltshire, J. Webb, Robert Lillywhite, H. Menadue |
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| Rok vydání: | 2020 |
| Předmět: |
Polyhalite
Potassium Potash chemistry.chemical_element Forage 04 agricultural and veterinary sciences engineering.material Biology 010403 inorganic & nuclear chemistry 01 natural sciences 0104 chemical sciences Nutrient Agronomy Dry weight chemistry 040103 agronomy & agriculture Genetics engineering 0401 agriculture forestry and fisheries Animal Science and Zoology Fertilizer Hordeum vulgare Agronomy and Crop Science |
| Zdroj: | The Journal of Agricultural Science. 158:269-278 |
| ISSN: | 1469-5146 0021-8596 |
| DOI: | 10.1017/s002185962000060x |
| Popis: | Polyhalite is a multi-nutrient mineral ore containing potassium (K), calcium (Ca), magnesium (Mg) and sulphur (S). Historically, it has enjoyed minor use as a fertilizer, but the opening of a new mine in the UK will make larger quantities available. Therefore, an examination of the performance of crops fertilized with polyhalite, or selected commercial alternatives, was pertinent and is reported here.Four field trials were carried out between 2013 and 2016 to investigate the response of winter barley (Hordeum vulgare L.) and forage maize (Zea mays L.) to different application rates of polyhalite, potassium chloride (muriate of potash, MOP) and potassium sulphate (sulphate of potash, SOP) fertilizers. Potassium and S nutrition were the focus of these trials as they limit field production more often than Mg and Ca.Polyhalite was found to be an effective source of both K and S for crop production. In three out of four trials, application of polyhalite resulted in similar or greater K offtake compared with both MOP and SOP; MOP application resulted in greater K offtake in one trial. In three out of four trials, application of polyhalite resulted in similar or better S offtake compared with both MOP and SOP; SOP application resulted in greater S offtake in one trial. Polyhalite and MOP treatments produced similar total dry weight in all four trials, but were slightly inferior to SOP treatment. |
| Databáze: | OpenAIRE |
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