INTERACTION OF NICKEL AND NITROGEN IN POTATO CROP FOCUSING ON REDUCING N-FERTILIZER APPLICATION

• Grant number: 19/06500-1
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: August 01, 2019
• End date: November 25, 2019
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Wanderley Jose de Melo
• Grantee: Fernando Giovannetti de Macedo
• Supervisor: Lincoln Zotarelli
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Institution abroad: 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

Abstract

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.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MACEDO, FERNANDO GIOVANNETTI; DE MELO, WANDERLEY JOSE; CECILIO FILHO, ARTHUR BERNARDES; SANTOS, ELCIO FERREIRA; CRUZ, RENATA BEATRIZ; BELLOTI, MARIANA. Nickel reduces blossom-end rot even under calcium deficiency conditions; evidence from physiological responses of the NI-CA interaction. JOURNAL OF PLANT NUTRITION, v. N/A, p. 12-pg., 2022-12-19. (15/23927-8, 19/06500-1)