Row brush hoes - weed control versus soil protection?
1994
Weber, H. (Technische Univ. Muenchen-Freising (Germany). Inst. fuer Landtechnik. Abt. Technik im Gartenbau)
Small row distances in horticultural crops of sometimes only 25 cm permit high driving velocities. In this case pto-driven implements, for example row brush hoes are used. With the present type of row brush hoe it is not possible to meet the requirements good weed control, soil protection and high working capacity at the same time. A sufficient working depth is only achieved with the help of high rotation rates and slow driving velocities. The consequences are low working capacity and the destruction of the soil structure. A precise adjustment and control of the working depth and an improved steering of the implement are basic requirements for successful weed control, higher driving velocities and an exact work close to the crop row. A technical optimization of the implements and the processes are necessary. In a couple of field trials the mode of operation of a row brush hoe and the effects on the weed control were investigated. An ultrasonic device was tested to control the working depth with the help of the tractor hydraulic. At the same time tools were investigated to work in combination with the brush. The results show, that a good weed control, high working capacity and soil protection at the same time is possible. The driving velocity is determined by the steering of the implement along the row
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