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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Silicon Fertilization Improves Physiological Responses in Sugarcane Cultivars Grown Under Water Deficit

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Author(s):
de Camargo, M. S. [1] ; Bezerra, B. K. L. [2] ; Holanda, L. A. [2] ; Oliveira, A. L. [3] ; Vitti, A. C. [1] ; Silva, M. A. [2]
Total Authors: 6
Affiliation:
[1] APTA, Polo Ctr Sul, BR-13412050 Piracicaba - Brazil
[2] Univ Estado Sao Paulo UNESP, Fac Ciencias Agr, Dept Prod & Melhoramento Vegetal, BR-18603970 Botucatu, SP - Brazil
[3] Univ Fed Sao Carlos, Ctr Ciencias Agr, BR-13604900 Araras - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION; v. 19, n. 1, p. 81-91, MAR 2019.
Web of Science Citations: 3
Abstract

There are few results about association Si and water deficit in sugarcane plants, regarding physiological aspects. The objective of this study was to investigate the effects of Si fertilization and water deficit imposed during two seasons on sugarcane cultivars using physiological evaluations, biomass measurements, and determination of the Si content in the plants and soil. Two experiments were conducted in a randomized block design: four sugarcane cultivars (drought-tolerant: RB86-7515 and SP83-2847; drought-sensitive: RB85-5536 and RB85-5453), two levels of Si (0 and 600 kg ha(-1) Si). and with and without water deficit during spring (October 2014) or winter (July 2015). Si fertilization increased soluble Si in the soil in both experiments. Si provided increases in relative water content (RWC) for RB85-5536 and SP83-2847, in carotenoids content for RB85-5453 and SP83-2847, and dry weight (DW), water potential (Psi w), and SPAD for RB86-7515 during spring under drought. During winter, Si improved RWC, Psi w, DW, and Si uptake and decreased electrolyte leakage in leaves. In conclusion, Si can be considered a feasible alternative to alleviate water deficit damage imposed in both studied seasons through different physiological alterations according to each cultivar. (AU)

FAPESP's process: 13/04144-7 - Silicon fertilization in sugarcane and water stress tolerance: influence on soil, uptake and biometric, physiological and biochemical parameters
Grantee:Mônica Sartori de Camargo
Support Opportunities: Regular Research Grants