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Impact of biochar application on plant water relations in Vitis vinifera (L.) (Articolo in rivista)

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Impact of biochar application on plant water relations in Vitis vinifera (L.) (Articolo in rivista) (literal)

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Silvia Baronti; Francesco Primo Vaccari; Francesco Miglietta; Maria Costanza Calzolari; Emanuele Lugato; Simone Orlandini; Roberto Pini; Christian Zulian; Lorenzo Genesio (2014)
Impact of biochar application on plant water relations in Vitis vinifera (L.)
in European journal of agronomy
(literal)

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Silvia Baronti; Francesco Primo Vaccari; Francesco Miglietta; Maria Costanza Calzolari; Emanuele Lugato; Simone Orlandini; Roberto Pini; Christian Zulian; Lorenzo Genesio (literal)

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Institute of Biometeorology (IBIMET), National Research Council (CNR), Via G. Caproni 8, 50145 Florence, Italy; European Commission - JRC, Via E. Fermi 2749, 21027 Ispra (VA), Italy; FoxLab (Forest and Wood) Foundation E. Mach - Iasma, Via E. Mach 1, 38010 S. Michele all'Adige (TN), Italy; Institute of Ecosystem Studies (ISE), National Research Council (CNR), Via Moruzzi 1, 56124 Pisa, Italy; Department of Agri-food Production and Environmental Sciences, University of Florence, Piazzale delle Cascine 18, 50144 Florence, Italy; Marchesi Antinori srl, Piazza Antinori, 3 50123 Florence, Italy (literal)

Titolo

Impact of biochar application on plant water relations in Vitis vinifera (L.) (literal)

Abstract

Soil water status plays an important role in growth-yield and grape quality of Vitis vinifera (L.). In some cases, periods of moderate water stress have been indicated to exert a positive effect on the quality of grape production. However, prolonged water stress may have a strong negative affect grapevine photosynthesis and grape yield, especially in dry Mediterranean environments. Biochar is a co-product of a thermochemical conversion of biomass that is recognized to be a beneficial soil amendment, which when incorporated into the soil increases soil water retention. We investigated the effect of two rates of biochar application (22 and 44 ton ha-1) on plant water relations of V. vinifera in a field experiment in central Italy. Biochar obtained from the carbonization of orchard pruning waste was applied to the soil over two consecutive growing seasons. The treatments did not show a significant increase in soil hydrophobicity. Moreover, soil analysis and ecophysiological measurements indicated a substantial relative increases in available soil water content compared to control soils (from 3.2% to 45% in the 22 and 44 ton ha-1 application rates, respectively) and in leaf water potential (24-37%) during droughts. (literal)

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