LOW-DOSAGE SYSTEMS WITH HERBICIDES IN CARROTS

In arable farming, particularly in sugar beet cultures, a new method of herbicide application is rapidly gaining acceptance in practice.
Empirical evidence suggest that up to 40 % of herbicide input can be saved when using low-dosage application systems.

At the Swiss Federal Research Station for Fruit-Growing, Viticulture and Horticulture, experiments have been carried out to compare weed control efficacy and crop selectivity of low-dosage, splitting and conventional pre-and post emergence application techniques in carrots (Daucus carota L. spp. sativus). Significantly better weed control was realised by low dosage systems as compared with conventional pre-emergence application.
Low dosage systems correspond better to weed control strategies based on the period threshold concept than conventional post-emergence treatments.
Post-emergence treatments and particularly low-dosage systems show a favourable cost-benefit ratio, as was shown for carrots.
Some constraints will also be briefly discussed.

Symposium on Engineering as a Tool to reduce Pesticide Consumption and Operator Hazards in Horticulture

D.T. Baumann

Carrots, Metoxuron, splitting, adjuvent, selectivity, period threshold

https://doi.org/10.17660/ActaHortic.1994.372.14