Row spacing and nitrogen fertilization effect on red fescue (Festuca rubra L.) seed yield

Red fescue (Festuca rubra L.) is a grass that can grow in low-nutrient soils and can withstand extreme abiotic stresses like winter cold and summer drought. It is used in seed mixtures for lawns and pastures. Red fescue production is affected various factors: genotype, climate, and edaphic conditions. The purpose of this study was to measure red fescue seed yield of output in three successive years (2018-2020) under various sowing intervals and nitrogen fertilizer treatments, as well as to investigate the link between seed yield, N fertilization, and seeding rates. Weather conditions are crucial to the seed yield of red fescue. The average seed yield of red fescue per panicle was the highest in 2018, with a row spacing of 25 cm and the C2-b fertilization treatment. Grasses are productive due to their rapid growth response to high nitrogen (N) fertility rates. The results show that the effects of year, sowing spacing, fertilization method, and their interactions on seed yield per hectare were found to be highly significant. A consistent and highly significant correlation was observed between seed yield per panicle and seed yield per hectare across all years. A highly significant negative correlation was established between the weight of one thousand seeds and the number of seeds per gram.