Article,

Sensor-based weed detection and application of variable herbicide rates in real time

, and .
Crop Protection, 26 (3): 270 - 277 (2007)Weed Science in Time of Transition.
DOI: DOI: 10.1016/j.cropro.2005.08.018

Abstract

An important step towards application of variable herbicide rates is the development of online sensors for detecting weeds. Field trials were conducted with a sensor-controlled field sprayer from the year 2000 to 2003 in cereals and pea. The aim was to quantify the influence of the real-time application of variable herbicide rates on the amount of herbicides used, grain yield and late weed infestation. In 13 field trials average herbicide savings of 24.6% were achieved (cereals: 22.8%, pea: 27.9%), and compared with conventional application on average no yield reduction was caused by sensor-based herbicide application. When late weed infestation was checked shortly before harvest, no differences in weed density were observed between areas with reduced and areas with standard dosage.

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