The Comparison Analysis of Uniform-and Variable-Rate Fertilizations on Winter Wheat Yield Parameters Using Site-Specific Seeding

Wheat is among the world’s most important agricultural crops, with winter wheat accounting for approximately 25.5% of total crop in Lithuania. The unchangeable goal production to achieve good and economically beneficial yield, but such efforts are often based on conventional agrotechnological solutions, excessive fertilization, which uneconomical negatively affects soil, environment, human health. In order produce a rich high-quality cereal crop, scientists farmers increasingly focusing managing sowing fertilization processes. Precision technologies spectrometric methods soil plant characterization can be used influence optimization fertilizer application rates without compromising yield quality. aim this study was investigate effect site-specific seeding variable-rate precision growth, quality indicators wheat. Experimental studies were carried out 22.4 ha field two treatments: first (control)—SSS (site-specific seeding) + URF (uniform-rate fertilization); second—SSS VRF (variable-rate fertilization) 4 repetitions. Before start study, variability apparent electrical conductivity (ECa) determined divided into five fertility zones (FZ-1, FZ-2, FZ-3, FZ-4, FZ-5). Digital maps potassium phosphorus created samples. Optical nitrogen sensors supplementary fertilization. method individual showed higher (up 6.74%) tillering coefficient, 14.55%) grain number ears per square meter 27.6%), ear 6.2%), protein content 12.56%), lower 8.61%) 1000-grain weight average than flat-rate addition, use SSS saved 14 kg N ha−1 compared method.