Abstract
In modern agriculture, grinding, levelling, loosening the soil surface layer and weed destruction, with application in the vegetable and technical crops sector, are carried out by a wide range of agricultural machines generically called harrows. These operations must be carried out by splitting on the natural lines of cohesion and not by hitting, cutting, compressing, breaking, when everything turns to dust. The paper presents the field tests for a harrow with elastic fangs in order to determine the following qualitative work indices: degree of soil grinding, degree of plant damage, degree of weed destruction, degree of levelling, working depth and operating energy indices for the maintenance of corn and sunflower crops.
Highlights
The mechanical processing of topsoil is one of the most important land preparation operations for the cultivation of future crops [1].Equipment for the primary soil processing, such as ploughs, chisels, rippers, etc., are widely used, but don’t produce adequate loosening and fragmentation of topsoil
Secondary processing tools are generally towed by agricultural tractors and can be divided into two main categories: passive and active equipment
The main objectives of the harrowing work are to achieve the control of weeds, the incorporation of vegetable residues and organic manure to improve soil moisture and fragmentation [6, 7, 8]
Summary
The mechanical processing of topsoil is one of the most important land preparation operations for the cultivation of future crops [1]. Secondary processing tools are generally towed by agricultural tractors and can be divided into two main categories: passive and active equipment. Passive tools, such as harrows or vibratory cultivators, only fragment the soil by absorbing power from the tractor’s drawbar, while the active equipment is operated, by the tractor’s power take-off [2, 3]. Experimental researches were undertaken in order to highlight the importance of working stability for soil tillage aggregates, in terms of quality of work and fuel consumption [13, 14]. The paper presents the field tests for a harrow with elastic fangs in order to determine the qualitative working indices as well as the exploitation energy indices during the maintenance of corn and sunflower crops
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