Quantitative and qualitative responses of Euphorbia milii and Zamioculcas zamiifolia exposed to different levels of salinity and luminosity

The objective of this research was to define the potential of brackish groundwater for 15 systems of biosaline agriculture in a representative area of the Brazilian semi-arid region. The study was conducted using a database of the State of Ceará, with 6284 wells having brackish water (EC ≥ 0.8 dS m−1 and discharge rate ≥ 0.5 m3 h−1). Our results show that the potential of brackish groundwater resources depends on the set of data: (i) production system (crop salt tolerance and water demand) and (ii) water source (salinity and well discharge rate). The joint analysis of these data shows that plant production systems with lesser water requirements, even with moderate tolerance levels to salt stress, present better results than more tolerant species, including halophytes and coconut orchards. About 41, 43, 58, 69, and 82% of wells have enough discharge rates to irrigate forage cactus (1.0 ha), sorghum (1.0 ha with supplemental irrigation), hydroponic cultivation, cashew seedlings, and coconut seedlings, respectively, without restrictions in terms of salinity. Otherwise, 65.8 and 71.2% of wells do not have enough water yield to irrigate an area of 1.0 ha with halophytes and coconut palm trees, respectively, butmore than 98.3 and 90.7% do not reach the water salinity threshold for these crops. Our study also indicates the need for diversification and use of multiple systems on farms (intercropping, association of fish/shrimp with plants), to reach the sustainability of biosaline agriculture in tropical drylands, especially for family farming.

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Potential of Brackish Groundwater for Different Biosaline Agriculture Systems in the Brazilian Semi-Arid Region

Lessa

Lacerda

Cajazeiras

et al. 2023

Agriculture

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Quantitative and qualitative responses of Euphorbia milii and Zamioculcas zamiifolia exposed to different levels of salinity and luminosity

Abstract: Quantitative and qualitative responses of Euphorbia milii and Zamioculcas zamiifolia exposed to different levels of salinity and luminosity 1Respostas quantitativas e qualitativas de Euphorbia milii e Zamioculcas zamiifolia expostas a diferentes níveis de salinidade e luminosidade

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Potential of Brackish Groundwater for Different Biosaline Agriculture Systems in the Brazilian Semi-Arid Region

Potential of Brackish Groundwater for Different Biosaline Agriculture Systems in the Brazilian Semi-Arid Region

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