Resumen

AGUILERA, Lorgio E.; CHANDIA, Nancy P.; NEEDHAM, Paula  y  ALVAREZ, Carmen. Effect of algal polymers on table grape productivity under deficit irrigation conditions. Inf. tecnol. [online]. 2021, vol.32, n.5, pp.29-36. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642021000500029.

The main objective of this research study was to assess the effect of an alginate and ulvan mixture on the productivity of table grapes grown under deficit irrigation conditions. Twenty-four Vitis vinifera var Thompon Seedless plants were randomly selected in a farm field. A mixture of algae polymers (500 g/m3) were added monthly (2019-2020 season) to the soils of half of the plants with normal irrigation and with deficit irrigation. The results show that deficit irrigation along with the addition of algal hydrogel increased grape bunch production and weight by 18.5% and 6.4%, respectively, when compared to plants with deficit irrigation only. The addition of algal hydrogel improved soil fertility and stimulated bacterial and fungal growth mainly in soils without water restriction. It is concluded that algal hydrogel improves vine crop productivity under deficit irrigation conditions.

Palabras clave : alginate; ulvan; Vitis vinifera; deficit irrigation; microorganisms.

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