Figure 1

Densities of cereal aphids (a: S. avenae; b: R. padi) (means + SE) in nitrogen fertilizer plots at the flowering and milking phases during 2016–2018.

Densities of cereal aphids (a: S. avenae; b: R. padi) (means + SE) in nitrogen fertilizer plots at the flowering and milking phases during 2016–2018.