Open AccessDevelopment and production of iceberg lettuce irrigated with magnetically treated water
Author(s) -
Lis Tavares Ordones Lemos,
Fábio Ponciano de Deus,
Valter Carvalho de Andrade Júnior,
Michael Silveira Thebaldi,
Márcio Mesquita,
Rodrigo César de Almeida
Publication year - 2021
Publication title -
water s.a./water sa
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.389
H-Index - 59
eISSN - 1816-7950
pISSN - 0378-4738
DOI - 10.17159/wsa/2021.v47.i4.3863
Subject(s) - lactuca , irrigation , environmental science , soil water , agronomy , greenhouse , dry weight , water use , deficit irrigation , horticulture , irrigation management , biology , soil science
Irrigated agriculture has become a concern, given the scarcity of freshwater. To reduce its water consumption, new techniques and technologies have been proposed. Based on this, the objective of this work was to evaluate the influence of different soil water tensions at initiation of irrigation with magnetically treated water, on ‘iceberg’ lettuce Lucy Brown (Lactuca Sativa L.) development and production. The experiment was conducted in a greenhouse, using a completely randomized factorial design, to evaluate two water types (magnetically treated water – MW and ordinary water – OW) and four soil water tensions at initiation of irrigation (T1 – 15 kPa, T2 – 25 kPa, T3 – 40 kPa and T4 – 70 kPa), with three replicates. Tensiometers were used to estimate soil water tension. The evaluated parameters were: aerial part fresh and dry total mass; commercial head fresh and dry mass, root fresh and dry mass; stem fresh and dry mass; stem length and diameter; percentage of leaves with tip burn, total and commercial yield; water use efficiency related to total and commercial yield; plant exposed area; and dry matter content. Despite achieving greater water use efficiency, the magnetic treatment may have hindered the removal of water from the soil by the crop, especially at increased soil water tension at initiation of irrigation.