Soil Salinity: Effect on Vegetable Crop Growth. Management Practices to Prevent and Mitigate Soil Salinization.

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Salinity is a major problem affecting crop production all over the world: 20% of cultivated
land in the world, and 33% of irrigated land, are salt-affected and degraded. This process can be
accentuated by climate change, excessive use of groundwater (mainly if close to the sea), increasing
use of low-quality water in irrigation, and massive introduction of irrigation associated with intensive
farming. Excessive soil salinity reduces the productivity of many agricultural crops, including
most vegetables, which are particularly sensitive throughout the ontogeny of the plant. The salinity
threshold (ECt) of the majority of vegetable crops is low (ranging from 1 to 2.5 dS m−1 in saturated soil
extracts) and vegetable salt tolerance decreases when saline water is used for irrigation. The objective
of this review is to discuss the effects of salinity on vegetable growth and how management practices
(irrigation, drainage, and fertilization) can prevent soil and water salinization and mitigate the
adverse effects of salinity.

  • Publisher: Horticulturae
  • Author(s): Rui Manuel Almeida Machado 1,2,* and Ricardo Paulo Serralheiro 1,3
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