Resumo

MARTIN MARTIN, Roberqui et al. Impact of different tillage systems on the nutritional physiology of wheat crop (Triticum durum L.). cultrop [online]. 2016, vol.37, n.1, pp. 85-90. ISSN 1819-4087.

This work was conducted in “La Hampa” experimental farm, belonging to the Institute of Natural Resources and Agrobiology of Seville (CSIC), Spain, in order to evaluate the physiological responses elicited by traditional (LT) and conservation tillage (LC) on the nutritional status of wheat crop (Triticum durum L.) in long-term experiments on a sandy clay loam Xerofluvent soil. The experimental area has an agrometeorological station to record the minimum, average and maximum values of different variables, considering temperatures and rainfall in this work. A randomized block design with three replicates per treatment was used for the study; each block had a surface area of 240 m². At the experimental stage, crop nutrient extraction was assessed on the grains and leaf mass of 10 randomly selected plants per treatment. Nitrogen was determined by Kjeldahl method whereas the other elements by plasma atomic emission spectroscopy (ICP). From the physiological point of view, there are significant differences on the extraction of nutrients absorbed by the crop, ensuring that plants had no nutritional problems at the conservation tillage, with an increased total dry mass production. No significant differences were detected between both treatments with respect to yield, so that conservation tillage is more appropriate when taking into account its environmental benefits

Palavras-chave : tillage; nutrition; yield; physiological response; wheat.

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