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SIEMBRA DIRECTA Y CONVENCIONAL DE TRIGO (Triticum aestvium L.): EFICIENCIA DE IMPLANTACION CON RELACION A LA COMPACTACION DEL SUELO AL MOMENTO DE LA SIEMBRA DIRECT AND CONVENTIONAL SOWING OF WHEAT (Triticum aestvium L.): IMPLANTATION EFFICIENCY WITH RELATION OF SOIL COMPACTION IN THE MOMENT OF SOWING

SIEMBRA DIRECTA Y CONVENCIONAL DE TRIGO (Triticum aestvium L.): EFICIENCIA DE IMPLANTACION CON RELACION A LA COMPACTACION DEL SUELO AL MOMENTO DE LA S

SIEMBRA DIRECTA Y CONVENCIONAL DE TRIGO (Triticum aestvium L.): EFICIENCIA DE IMPLANTACION CON RELACION A LA COMPACTACION DEL SUELO AL MOMENTO DE LA SIEMBRA DIRECT AND CONVENTIONAL SOWING OF WHEAT (Triticum aestvium L.): IMPLANTATION EFFICIENCY WITH RELATION OF SOIL COMPACTION IN THE MOMENT OF SOWING  
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In the Argentina country, grains production is around of 39.800.000 Mg, with a value of U$A 4.560.000.000. The export of grains is the support of country economy, because of to contribution U$A 2.200.000.000. Actuality the direct sowing techniques contain an area of 9.250.000 has, in detriment to the conventional tillage and to add marginal areas. This increment, always not, is accompanied with the augmentation of yields cultivation's. The objectives of present paper were: a) Quantize the implantation efficiency of wheat cultivation under two different implantation systems: conventional tillage and direct sowing. b) Quantize the soil compaction until tillage deep before and after seeder passage in twice systems. The sow test were carried over Argiudol vertic soil. The results obtained showed: a) an lower implantation efficiency in the direct sowing system than the conventional tillage system. b) an high soil mechanics impedance in de direct sowing systems in the moment of sowing. Keyword: seeder; cone index; crops INTRODUCCIÓN La siembra directa es una variante de los sistemas corrientes de producción de granos y forrajes que consiste en la implantación de un cultivo en un terreno que no ha sido labrado desde la cosecha del cultivo anterior (Colombino, et al. 1988). En la actualidad se observa un
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