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Interaction of nickel and nitrogen in potato crop focusing on reducing N-fertilizer application

Grant number: 19/06500-1
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): August 01, 2019
Effective date (End): November 25, 2019
Field of knowledge:Agronomical Sciences - Agronomy - Soil Science
Principal Investigator:Wanderley Jose de Melo
Grantee:Fernando Giovannetti de Macedo
Supervisor abroad: Lincoln Zotarelli
Home Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
Local de pesquisa : University of Florida, Gainesville (UF), United States  
Associated to the scholarship:15/23927-8 - Interaction Ni x Ca in control of blossom-end rot of tomato, BP.PD


Potatoes are the most consumed vegetable by humans. As potato tubers develop into the soil, potatoes are usually grown on very sandy soils that cause leaching of many soluble nutrients, especially nitrogen (N). Potato root system is shallow and inefficient in absorbing nutrients, which demands high doses of N to supply the need of the crop. There is evidence that nickel (Ni) can beneficially influence plant N metabolism, thus reducing the dose of N applied. A series of greenhouse and field trials will be carried out aiming to evaluate the interactive effect of Ni and N focused on potato N metabolism and tuber yield. During potato cultivation, plant gas exchange, enzyme activity, urease and nitrate reductase will be evaluated. At the end of the experiment, aboveground biomass and yield, Ni, N, N-nitrate and protein content will be evaluated. The expected outcomes of this research is that the application of Ni will reduce the application of N requirement without affecting tuber yield, which will reduce the environmental impact of N fertilization practices.