Abstract

FILHO, Gilberto S. Tavares et al. Water quality in the semiarid region and its effects on soil attributes and culture Moringa oleifera Lam. Rev. de Ciências Agrárias [online]. 2020, vol.43, n.3, pp.84-103.  Epub Sep 01, 2020. ISSN 0871-018X.  https://doi.org/10.19084/rca.20722.

Salinity is one of the main problems faced by irrigated agriculture in the semiarid region, due to the osmotic effects and ion toxicity. These factors reflect negatively on the growth and development of plants, especially in the early stages of their development. The objective of the present study is to verify the quality of the water in the semi-arid and its effects on the attributes of the soil and on the culture of Moringa oleifera Lam., Through a bibliographic review. The quality of the water interferes in the chemical and physical attributes of the soil as well as in the seedling and plant, due to the accumulation of salts present in the solution, causing the increase in salinity and sodicity at levels not tolerant to most of the cultivated species. Existing studies indicate a tolerance for a salinity level of up to 2 dS. m-1, for the culture of Moringa oleifera Lam, above that there is a decrease in the development and growth of the plant. The use of saline water is more tolerant for crops than for humans, due to the defense mechanisms or separation of toxic and non-toxic components of plants. However, in both situations, proper use involves appropriate management that can separate the salts present in the solution or decrease their concentrations to levels acceptable for the crop, thus avoiding soil depletion with regard to the availability of water and nutrients for the plants. Conducting more research on the subject is essential, especially for regions where water quality is affected by climatic reasons such as semi-arid, enabling and subsidizing the cultivation of species in this region, which does not have a quality water supply, improving fixation and economic development of man in the region.

Keywords : electrical conductivity; irrigation; seedlings; salinity.

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