Leaf vine content in nutrients and trace elements in La Mancha (Spain) soils: influence of the rootstock

The use of rootstock of American origin has been the classic method of fighting against Phylloxera for more than 100 years. For this reason, it is interesting to establish if different rootstock modifies nutrient composition as well as trace elements content that could be important for determining the traceability of the vine products. A survey of four classic rootstocks (110-Richter, SO4, FERCAL and 1103-Paulsen) and four new ones (M1, M2, M3 and M4) provided by Agromillora Iberia. S.L.U., all of them grafted with the Tempranillo variety, has been carried out during 2019. The eight rootstocks were planted in pots of 500 cc, on three soils with very different characteristics from Castilla-La Mancha (Spain). In the month of July, the leaves were collected and dried in a forced air oven for seven days at 40ºC. Then, the samples were prepared for the analysis determination, carried out by X-Ray fluorescence spectrometry. The results obtained showed that in the case of content in mineral elements in leaf, separated by soil type, we can report the importance of few elements such as Si, Fe, Pb and, especially, Sr. The rootstock does not influence the composition of the vine leaf for the studied elements that are the most important in determining the geochemical footprint of the soil. The influence of the soil can be discriminated according to some elements such as Fe, Pb, Si and, especially, Sr.

Authors: Sandra Bravo1, Francisco Jesús García-Navarro1, Caridad Pérez-de-los-Reyes1, Mónica Sánchez1, Jesús García-Pradas1, Pablo Higueras2, Juan Antonio Campos1, Gerardo Brox3 and Jose Ángel Amorós1

1University of Castilla-La Mancha, H.T.S. Agricultural Engineers of Ciudad Real, Ciudad Real, Spain
2University of Castilla-La Mancha, Applied Geology Institute (IgeA), Almaden, Ciudad Real, Spain
3Agromillora S.L.U., Spain

Email: joseangel.amoros@uclm.es

Keywords: rootstock, trace elements, leaf, nutrition

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