IMPACT4SOIL OpenAire UnpayWall Recolector de Ciencia Abierta, RECOLECTA Crossref Revistas Científicas del INIA Microsoft Academic Graph Spanish Journal of Agricultural Research Open Access 2013-11-21 <p>Soil degradation is the result of interactions involving the soil itself, human activity, climate, relief, and vegetation. These can lead to changes in &#151;or even the loss of&#151; certain characteristics of the soil, reducing its present and future productive capacity. The aim of this study was to determine the behaviour of a number of soil physical variables and total organic carbon content, as well as the root activity and yield of crops grown in rotation (soybean in 1998/1999 and maize in 1999/2000) under direct sowing (DS) and conventional tillage (CT) conditions. Root activity was assessed using an isotopic methodology involving the uptake of 32P. The root activity of the soybean crop, which grew under normal rainfall conditions, was greater under CT conditions. That of the maize crop, which grew when rainfall was well below normal, was greater under DS conditions. Bulk density was higher and total porosity lower in the upper 0.10 m of the soil in the DS plots. Conventional tillage led to lower penetration resistance values in the upper layers of the soil profile. No differences in soil total organic carbon were found between the two tillage systems. The soil water content of the upper soil layers was higher under DS. The yield of the soybean crop under CT was 57% higher than under DS. The yield of maize was affected by water deficiency; higher yields were obtained with DS than with CT.</p> Glycine max Argentina Rendimiento de cultivos Soil fertility Zea mays Tracer techniques Glycine max; Zea mays; Crop rotation; Conventional tillage; Zero tillage; Soil chemicophysical properties; Soil fertility; Tracer techniques; Crop yield; Argentina Glycine max; Zea mays; Rotación de cultivos; Labranza convencional; Cero-labranza; Propiedades físico - químicas suelo; Fertilidad del suelo; Técnicas de trazadores; Rendimiento de cultivos; Argentina Crop rotation Labranza convencional Crop yield Fertilidad del suelo 2. Zero hunger Conventional tillage Soil chemicophysical properties 0402 animal and dairy science 04 agricultural and veterinary sciences 15. Life on land Técnicas de trazadores 6. Clean water Propiedades físico - químicas suelo Zero tillage 0401 agriculture, forestry, and fisheries Rotación de cultivos AGRICULTURAL ENGINEERING Cero-labranza Barrios, M.B., Bozzo, A.A., Debelis, S.P., Pereyra, A.M., Buján, A., 2006-12-01 journalpaper <p>Soil degradation is the result of interactions involving the soil itself, human activity, climate, relief, and vegetation. These can lead to changes in &#151;or even the loss of&#151; certain characteristics of the soil, reducing its present and future productive capacity. The aim of this study was to determine the behaviour of a number of soil physical variables and total organic carbon content, as well as the root activity and yield of crops grown in rotation (soybean in 1998/1999 and maize in 1999/2000) under direct sowing (DS) and conventional tillage (CT) conditions. Root activity was assessed using an isotopic methodology involving the uptake of 32P. The root activity of the soybean crop, which grew under normal rainfall conditions, was greater under CT conditions. That of the maize crop, which grew when rainfall was well below normal, was greater under DS conditions. Bulk density was higher and total porosity lower in the upper 0.10 m of the soil in the DS plots. Conventional tillage led to lower penetration resistance values in the upper layers of the soil profile. No differences in soil total organic carbon were found between the two tillage systems. The soil water content of the upper soil layers was higher under DS. The yield of the soybean crop under CT was 57% higher than under DS. The yield of maize was affected by water deficiency; higher yields were obtained with DS than with CT.</p> 10.5424/sjar/2006044-212 https://doi.org/10.5424/sjar/2006044-212