RT info:eu-repo/semantics/article
T1 Effects of Leonardite Amendments on Vineyard Calcareous Soil Fertility, Vine Nutrition and Grape Quality
A1 López González, Roberto
A1 Garzón Jimeno, José Enrique
A1 Quiroga, Miguel Javier
A1 Visconti Reluy, Fernando
A1 Olego Morán, Miguel Ángel
A1 Cuesta Lasso, Mateo D.
A2 Produccion Vegetal
K1 Ingeniería agrícola
K1 Ferric chlorosis
K1 Grapevine
K1 Leonardite
K1 Potassium
K1 Soil organic matter
AB [EN] Vineyard calcareous soils are usually low in organic matter, which makes them prone tophysical, chemical, and biological degradation. Besides, these soils are also usually poor in variousnutrients in plant-available form, e.g., iron. To make up for this lack of soil fertility, on the onehand, manures, and on the other, iron chelates are usually used. However, the soil application ofthese materials is not free from problems, and other amendments based on leonardites could beadvantageously used as an alternative. Therefore, two organic amendments, one leonardite alone(1 Mg/ha), and the other leonardite (1 Mg/ha) plus ferrous sulphate heptahydrate (0.5 Mg/ha),were tested for three years in a commercial vineyard calcareous plot under Mediterranean climate.The effects of these amendments on soil fertility, plant nutrient contents, and berry quality werestudied against a control of bare soil by means of a fully randomized trial with three repetitionsper treatment. Soil organic matter (SOM) increased as a consequence of both leonardite treatments,but much more than expected on the basis of a simple mass transfer from the amendments. Withthe ferrous-sulphate-heptahydrate-supplemented leonardite, the increase in SOM was noticeablyhigher. This is explained on the basis of nutrient quantity and intensity-pH-related effects, whichincreased soil nutrient plant-availability and presumably enhanced vine root growth. In responseto the higher plant availability of nutrients, the petiole nutrient concentrations were observed toincrease under the leonardite treatments. However, only a trend to increase potassium in petiolesand in grape must, linked to a decrease of grape must pH, was observed in harvest quality under theleonardite treatments. Leonardite and adequately supplemented leonardite seem to have potential forincreasing SOM contents and nutrient plant-availability, thus improving the soil fertility of vineyardcalcareous soils.
PB Basel MDPI AG
LK https://hdl.handle.net/10612/17972
UL https://hdl.handle.net/10612/17972
NO Olego, M. Á., Cuesta Lasso, M., Quiroga, M. J., Visconti, F., López, R., & Garzón-Jimeno, E. (2022). Effects of Leonardite Amendments on Vineyard Calcareous Soil Fertility, Vine Nutrition and Grape Quality. Plants, 11(3). https://doi.org/10.3390/PLANTS11030356
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 19-may-2024