Articles
EFFECT OF SOIL PH REACTION ON MANGANESE CONTENT AND DYNAMICS IN GRAPEVINE (VITIS VINIFERA L.)
Article number
868_24
Pages
203 – 208
Language
English
Abstract
Influence of soil reaction on the amount of manganese (Mn) in grapevine (Vitis vinifera L. Sauvignon Blanc) was investigated in 2007 in the Pleivica wine-growing region, in Northwestern Croatia.
The trial was set up on three vitisol subtypes: dystric cambisol (pHKCl 3.95), pseudogley (pHKCl 4.68), and rendzina on marl (pHKCl 7.35). Total Mn in the dystric cambisol ranged from 543 mg kg-1 (0-30 cm) to 593 mg kg-1 (30-60 cm), in the pseudogley from 523 mg kg-1 (0-30 cm) to 541 mg kg-1 (30-60 cm), and in the calcareous soil from 526 mg kg-1 (0-30 cm) to 539 mg kg-1 (30-60 cm). Identical agricultural management practices (tillage, fertilization and vine protection) were applied in all three vineyards.
Manganese concentration in vine leaves was determined three times during the growing period: at the flowering and veraison stages, and at the end of the growing period.
At the end of the growing period (harvest), Mn concentration also was determined in must, pomace and in cluster stems.
At all sampling times, significantly higher leaf Mn concentrations were found on the acid soils compared to the calcareous soil.
The highest leaf Mn concentration was observed at the veraison stage on the dystric cambisol and was 3 to 5 times higher than optimal concentration (30-100 mg kg-1 DM). Manganese concentrations in must were 2.3, in pomace 2.1, and in cluster stems as much as 5.3 times higher on very acid soil compared to calcareous soil.
Significantly lower Mn concentrations in must and pomace than in leaves and cluster stems may indicate poor translocation of Mn from leaves and cluster stems into berries.
The trial was set up on three vitisol subtypes: dystric cambisol (pHKCl 3.95), pseudogley (pHKCl 4.68), and rendzina on marl (pHKCl 7.35). Total Mn in the dystric cambisol ranged from 543 mg kg-1 (0-30 cm) to 593 mg kg-1 (30-60 cm), in the pseudogley from 523 mg kg-1 (0-30 cm) to 541 mg kg-1 (30-60 cm), and in the calcareous soil from 526 mg kg-1 (0-30 cm) to 539 mg kg-1 (30-60 cm). Identical agricultural management practices (tillage, fertilization and vine protection) were applied in all three vineyards.
Manganese concentration in vine leaves was determined three times during the growing period: at the flowering and veraison stages, and at the end of the growing period.
At the end of the growing period (harvest), Mn concentration also was determined in must, pomace and in cluster stems.
At all sampling times, significantly higher leaf Mn concentrations were found on the acid soils compared to the calcareous soil.
The highest leaf Mn concentration was observed at the veraison stage on the dystric cambisol and was 3 to 5 times higher than optimal concentration (30-100 mg kg-1 DM). Manganese concentrations in must were 2.3, in pomace 2.1, and in cluster stems as much as 5.3 times higher on very acid soil compared to calcareous soil.
Significantly lower Mn concentrations in must and pomace than in leaves and cluster stems may indicate poor translocation of Mn from leaves and cluster stems into berries.
Authors
L. Čoga, S. Slunjski, M. Herak Ćustić, T. Horvat, M. Petek, J. Gunjača
Keywords
manganese, soil reaction, Vitis vinifera L., leaf, must
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