A device for the treatment of crops by wetness

摘要

This invention relates to a mobile device for applying a weed-killer between rows of cultivated plants, e.g. vine stocks. This applicator has a moistening contact action, as distinguished from spraying. It comprises at least one tubular container, the axis of which is horizontal during use, with flexible wicks extending outside of this tube for applying a weed-killer to the weeds. The main feature of this applicator is that the wicks are in the shape of flat braids laying side-by-side so as to form a single continuous sheet, ensuring a uniform distribution of the product over the treated area. One embodiment of the invention is a tractor-mounted device in which two swivelling arms extending right and left of a median frame carry the applicator devices. These arms are resiliently biased outwardly and may fold inwards when meeting an obstacle such as a vine stock, and spread out again after clearing the obstacle. The device may be provided with means for intermittently pressure-feeding metered amounts of concentrated liquid to the wicks, either through the container in which the wicks are inserted, or else through nozzles spraying liquid onto the wicks. The device is also suitable for applying growth-regulators or other chemical agents in small metered amounts, uniformly distributed with a moistening contact action.