Differentiated application of nitrogen fertilizers based on optical sensor readings
2021
Shchuklina, O. | Afanasiev, R. | Voronchikhina, I. | Klimenkova, I. | Komkova, A.
The article considers the method of variable rate application of top dressing withnitrogen fertilizers in spring barley crops in the system of precise agriculture. The principle of isbased on the in-process diagnosis of plants state in key phases of development and theintroduction of necessary dose of top dressing in specific field areas. To assess the plants state, aGreenSeeker optical sensor, which measures the NDVI (Normalized Difference VegetationIndex). The tailored application of top dressing increases the yield of spring barley grain by 14.2%compared to the application of fertilizers with one calculated rate for the entire plot or field(Skudra, 2017, Hamann, 2020).
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