Hydroponic lettuce production with brackish groundwater and desalination waste in Ibimirim, PE, Brazil

被引：29

作者：

Santos, Alexandre N. ^{[1
]}

Soares, Tales M. ^{[2
]}

Silva, Enio F. F. ^{[1
]}

Silva, David. J. R. ^{[1
]}

Montenegro, Abelardo A. A. ^{[1
]}

机构：

[1] DTR UFRPE, BR-52171900 Recife, PE, Brazil

[2] CCAAB UFRB, BR-44380000 Cruz Das Almas, BA, Brazil

来源：

REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL | 2010年 / 14卷 / 09期

关键词：

salinity; soilless; vegetables; reverse osmosis; irrigation; SALT TOLERANCE;

D O I：

10.1590/S1415-43662010000900008

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Ibimirim in Pernambuco is a municipal district located in the Brazilian semiarid region and most of its wells produce brackish water. The use of this water has been avoided since it may cause human diseases (such as hypertension and kidney stones) and crop yield reduction (with soil degradation). The objective of this work was to evaluate the utilization of brackish groundwater and the waste from its desalination for hydroponic production of two lettuce varieties (Vera and AF-1743). Six levels of water salinity (CEa: 0.2, 1.2, 2.2, 3.2, 4.2 and 5.2 dS m(-1)) were analyzed. The waters were used in overall production process (to prepare the nutrient solution and to restore the water consumed). The salinity increase caused a linear reduction in the growth lettuce of plants. The plants exhibited general chlorosis at the beginning of the cycle, but this symptom was not verified at the harvest. The variety 'Vera' had a lower absolute growth and yield than the 'AF-1743'. On the other hand, the percent reduction for both varieties was similar - the shoot fresh matter accumulation was decreased by 17.06 and 15.74% (dS m(-1))(-1) for 'Vera' and 'AF-1743', respectively.

引用

页码：961 / 969

页数：9

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