Gewasafhankelijk spuiten in uien; depositiemetingen 2018 SensiSpray2.0 CDS-beddenspuit

Research output: Book/ReportReportProfessional

Abstract

With more precise application methods applying PPP only to the areas where it is needed, the plant, the aim to reduce PPP input can be achieved. Canopy Density Spraying (CDS) was therefore used under practical conditions in onions. Spray deposition measurements of a CDS-sprayer and a standard application technique were done in three different crop growth stages of an onion crop. The CDS-sprayer was based on a Hardi Twin Force air sleeve boom sprayer with a working width of 5.4 m (three beds of 1.80 m onions) at 30 cm nozzle height. Greenseeker sensors measuring vegetation index (NDVI) were used to adjust spray volume by switching individually three nozzles mounted in Lechler Varioselect nozzle bodies. Angling of the nozzles towards the crop rows on the edges of the bed and air assistance improved spray deposition compared to a horizontal spray boom and nozzle orientation. In three growth stages spray deposition on the onion leaves was for the CDS spray technique 1.5 to 2.8 times higher compared to that of the standard air-assisted boom sprayer. Loss to soil surface on top of the bed and on the paths in between the beds was for the CDS sprayer lower than for the standard sprayer.
Original languageDutch
Place of PublicationWageningen
PublisherWageningen Plant Research
Number of pages61
DOIs
Publication statusPublished - 2023

Publication series

NameRapport / Stichting Wageningen Research, Wageningen Plant Research, Business unit Agrosysteemkunde
No.WPR-OT 1210

Cite this