Saline water on the leaf mineral composition of noni under organic fertilization

Abstract

Salinity is one of the main agricultural problems faced, and may negatively influence plant development. However, studies have shown that in protected environments and under the application of organic fertilizers, deleterious effects are mitigated. In this context, the objective of this study was to evaluate the effects of irrigation water salinity on mineral nutrition in noni plants grown in two environments and bovine manure application. The statistical design was a randomized block design arranged in split-split plot scheme, with five repetitions. The plots consisted of the cultivation environments (greenhouse and open field), the subplots formed by salinity levels of irrigation water (ECw: 0.3, 1.5, 3.0, 4.5 and 6.0 dS m-1), and the subsubplots were represented by the absence and presence of organic matter, with experimental unit consisting of three pots totaling 300 pots. The nitrogen, potassium, calcium, magnesium, sodium and chloride concentrations were determined in plant leaves. It was verified that the foliar concentrations of Ca2+, Mg2+, Na+ and Cl- and the ratio Na/K was increased with increasing salinity of the irrigation water, being the largest increments observed in the open field. Organic matter is not much relevant in attenuating the deleterious effects of irrigation water on the concentration of leaf nutrient in noni plants. The maintenance of lower values of Na/K ratio in the treatment with organic matter is a positive factor that can attenuate the effects of salt stress on cell metabolism.

Ethnobotanical use of Morinda citrifolia: a literature review

“…Among this biodiversity, Morinda citrifolia L. stands out, generally native to the tropical region, and popularly known as noni, belonging to the Rubiaceae family. The chemical makeup of the family is broad and has approximately 200 phytochemicals isolated and identified from various parts of the plant as roots, leaves, bark, and fruit (Palioto et al, 2015), with broad medicinal potential due to its antioxidant, dyslipidemic, hypotensive, healing, antimicrobial, analgesic properties (Souza et al, 2019;Vasconcelos et al, 2021), anticancer, anti-inflammatory, antidiabetic, antituberculosis, anxiolytic, antipsoriasis (Abou Assi et al, 2017), micronutrients such as phenolic compounds, organic acids and alkaloids (Franchi ET AL 2013), in addition to having a high toxic potential of some plants in this family. Used for years in the use of fruit juice for various purposes, noni has activities: antibacterial, antiviral, antifungal, antitumor, anthelmintic, analgesic, hypotensive, and antiinflammatory (Barbosa, et al, 2017).…”