Budburst inductors in peach tree - Influence on flowering, vegetative budbreak and effective fructification

Authors

  • Augusto Carlos Pola Epagri/Estação Experimental de Urussanga
    • Emilio Della Bruna Epagri/ E. E. Urussanga
      • Henrique Belmonte Petry Epagri - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina
        • Alexsander Luis Moret Epagri - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina

          DOI:

          https://doi.org/10.52945/rac.v36i3.1724

          Keywords:

          Prunus persica, budburst, nutritional competition, synergism

          Abstract

          For two successive years, budburst inductors were tested in ‘SCS444 Nicoleto’ peach tree in Pedras Grandes, SC, Brazil.
          The treatments were: T1 – untreated control; T2 - hydrogenated cyanamide; T3 – nitrogen foliar fertilizer; T4 – Ca(NO3)2; T5 – nitrogen foliar fertilizer + Ca(NO3)2; T6 – garlic extract; T7 – garlic extract + Ca(NO3)2. In the first year, a significant increase (p < 0.05) in the number of open flowers and post-thinning fructification was observed in treatments T2, T3, T5 and T7 compared to the control. In the first year, no significant differences were observed in the effective fruiting of the seven treatments. However, in the second year, with lower hibernal temperatures, a significant decrease in effective fructification was observed in treatments T2, T3, T4 and T5, which were the ones that most anticipated vegetative budbreak. It was found that, in the
          second year, the greater the number of vegetative buds opened during flowering (due to this anticipation), the lower was the post-thinning fructification (R = − 0.94; p < 0.01), indicating a competition between the reproductive and vegetative organs. In both years, significant synergistic effects were observed between the garlic extract and Ca(NO3)2 over the bud break.

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          Author Biographies

          • Augusto Carlos Pola, Epagri/Estação Experimental de Urussanga

            Graduated in Agronomic Engineering at the Centro de Ciências Agroveterinárias (Lages-SC) in 1984. Master's Degree in Agrometeorology at the Escola Superior de Agricultura "Luiz de Queiroz" in 1987. Researcher at Epagri/Estação Experimental de Urussanga. He has experience in the area of Agronomy, working mainly on the following topics: agrometeorology, temperate fruit trees, irrigation, genetic improvement and cassava.

          • Emilio Della Bruna, Epagri/ E. E. Urussanga

            Degree in Agricultural Engineering from the Federal University of Santa Catarina (1982) and a Master's degree in Agricultural Microbiology from the Universidade Federal de Viçosa (1985). Specialized in public administration by FAAP (Fundação Armando Alvares Penteado). He is currently a scientific researcher at the Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina de Santa Catarina. He has experience in plant genetic breeding in plum, grape and peach crops, fruit production, producer organization and agribusiness management. He is a rural producer certified by Globalgep.

          • Henrique Belmonte Petry, Epagri - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina

            Graduated in Agronomy from the Universidade Federal do Rio Grande do Sul (2009), master's degree in Phytotechnics from the Universidade Federal do Rio Grande do Sul (2012) and PhD in Phytotechnics from the Universidade Federal do Rio Grande do Sul (2014). He is currently a researcher at the Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, at the Estação Experimental de Urussanga, leader of passion fruit culture projects for the State of Santa Catarina. Professor of Fruit Growing in the Agronomy course at Febave - SC. President of the Brazilian Fruit Growing Society.

          • Alexsander Luis Moret, Epagri - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina

            Graduated in Agronomy from the Universidade Federal de Lavras (2003), master's degree in Genetics and Plant Breeding from the Universidade Federal de Lavras (2005) and Ph.D. in Genetics and Plant Breeding from the Universidade Federal de Lavras (2008). He is currently a researcher at the Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina. He has experience in the area of Agronomy, with emphasis on Plant Breeding, working mainly on the following topics: genetic improvement and quantitative genetics.

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          Published

          2023-12-13

          Issue

          Vol. 36 No. 3 (2023)

          Section

          Scientific article

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          Copyright (c) 2023 Augusto Carlos Pola, Emilio Della Bruna, Henrique Belmonte Petry, Alexsander Luis Moreto

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          How to Cite

          Budburst inductors in peach tree - Influence on flowering, vegetative budbreak and effective fructification. (2023). Agropecuária Catarinense Journal, 36(3), 47-51. https://doi.org/10.52945/rac.v36i3.1724