Gil Sierra, J., Ortiz-Cañavate, J. and Riquelme Sanhueza, J. 2006. Short communication. Performance of pneumatic spraying with an over-the-row sprayer in high density apple tree orchards. Spanish Journal of Agricultural Research. 4, 1 (Mar. 2006), 26-30. DOI:https://doi.org/10.5424/sjar/2006041-181.