STUDY ON THE DYNAMICS OF AN AGGREGATE FOR SEEDING OF MAIZE DIRECTLY IN STUBBLE PUBLISHEDD. POPA, R. ILEA, S. BUNGESCU, Alexandra BECHERESCU
Direct tillage, as an agricultural technology, minimizes soil processing, loosening it only on a narrow strip, in which the seeds are introduced, while also having to find the optimal conditions for germination and development. When certain conditions are met (the presence of agricultural aggregates with direct sowing machines in unprocessed soil and herbicides capable of keeping the soil clean throughout the entire crop’s vegetation along with functional irrigation systems), direct tillage is starting to become an important method of saving energy while also conserving soil’s production capacity, both being essential elements for a durable agriculture. As a consequence of the small ratio between the production costs and the delivery prices of agricultural products , more and more farmers are beginning to resort to different methods of soil works which aim to reduce workforce ,machines and fuel costs, while also producing more crops in a shorter amount of time. Observations drawn as a result of scientific research in the field, indicate the fact that an agricultural production increase of 1% requires an increase of energy consumption under the form of fuel, of 2,5%. Another conclusion shows that for the usage of agricultural machines it is required energy consumption two times higher than the one needed for their manufacture. The present paper presents a dynamic study of a direct tillage aggregate used for maize crop sowing, starting with the implementation of a theoretical model and completed with the acquisition of data values regarding the forces that occur during works. The results obtained from experimental study may constitute elements of analysis of the correlation that exists between the forces that occur during direct seeding work for maize crops and energy consumption associated with immediate implications on production obtained per unit of area.
direct sowing, forces, moments, fuel consumption