Influence of the UAN Fertilizer Application on Quantitative and Qualitative Changes in Semi-Natural Grassland in Western Carpathians
| Autor: | Ioan Rotar, Ovidiu Ranta, Nicoleta Lefter, Mirela Ranta, Anamaria Mălinaș, Roxana Vidican |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Agrostis capillaris L Forage Festuca rubra L Biology engineering.material 01 natural sciences Grassland lcsh:Agriculture Human fertilization floristic composition Dominance (ecology) Poaceae Dry matter geography geography.geographical_feature_category mineral fertilization lcsh:S 04 agricultural and veterinary sciences biology.organism_classification Agronomy 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries forage quality Fertilizer Festuca rubra Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Agronomy, Vol 11, Iss 267, p 267 (2021) Agronomy Volume 11 Issue 2 |
| ISSN: | 2073-4395 |
| Popis: | Semi-natural grasslands are particularly important in mountainous areas of Romania, being the only source of forage for many farmers. The aim of this study was to investigate the changes in forage quantity and quality as a result of Urea Ammonium nitrate (UAN) liquid fertilization. The experiment was carried out in the eastern part of Apuseni Mountains, Romania on a Festuca rubra L.-Agrostis capillaris L. grassland located at 1240 m altitude. Studies were made over three years of experimental trial (2014–2016) and covered four experimental plots in three replicates, as follows: V1–control plot, unfertilized V2–plot fertilized with 50 kg UAN ha−1 year−1 V3–plot fertilized with 75 kg UAN ha−1 year−1, and V4–plot fertilized with 100 kg UAN ha−1 year−1. The experimental plots were harvested once per year and the botanical composition, dry matter yield and forage quality were assessed. Our results showed important changes in forage quantity, quality and diversity as a result of UAN fertilization. Starting from the second experimental year the dominance/co-dominance ratio changed favoring the species from Poaceae family. Dry matter increased as a result of UAN fertilization but forage quality was negatively affected by the higher percentage of participation of species from other botanical families which have higher crude fiber content and lower crude protein. Based on our results we recommend moderate fertilization with UAN up to 50 kg UAN ha−1 year−1 for semi-natural grasslands located in soil-climatic conditions similar to those in our experiment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|