Spring rapeseed yield depending on methods of macro and microfertilizers application in the forest-steppe zone of the Central Chernozem region of the Russian Federation

We studied the efficiency of macro- and micro fertilizers application under spring rapeseed with an aim to receive the highest yields. The research was conducted on leached heavy loamy black soils (Lipetsk) in 2016 and 2017 at the All-Russian Research Institute of Rapeseed. We analyzed actions and interactions of the studied fertilizers on productivity of spring rapeseed. It appeared a dose N40P40K40 had a significant impact on seed yield, compared to control without fertilization. Seed yield in 2016 and 2017 was equal to 2.24 and 2.67 t per ha, respectively. The further increase of a dose of the main fertilizer up to N80P80K80 did not cause a meaningful yield increase. The highest yield of spring rapeseed in the experiment was obtained in both years (2016 - 2.50 t per ha, 2017 - 2.92 t per ha) in a variant with before-sowing seed treatment with Terra Organic, two-times foliar fertilizing with Plantofol in a dose 1.0 kg per ha and application N40P40K40 as the main fertilizer...