Chemical thinning increasing larger fruits and profit in red guava orchards

Marcelo Souza Silva, Sarita Leonel, Jackson Mirellys Azevedo Souza, Rafael Bibiano Ferreira, Rafaelly Calsavara Martins, Rafael Augusto Ferraz

Abstract


The guava is a fruit of strong economic and social relevance, regionally projected and greatly important in some regions of Brazil. The chemical thinning has been adopted in some fruit trees to obtain greater caliber of fruits and better prices. However, some aspects still need to be investigated for the safe and economical viability use of such technique. This research aimed to evaluate the chemical thinning efficiency, production and commercial classification of guava fruits cv. Paluma and provide an economic analysis of this crop system. The ethephon and benzyladenine were applied to fruits with an average size of 18 mm at 0, 150, 300 and 450 mg L-1. The replicated trial in two crop cycles was in randomized block design in a factorial arrangement 2x4. The economic analysis was calculated through total production operational cost, in order to determine gross revenue, operating profit, profitability index, equilibrium price and yield. The benzyladenine and ethephon promoted the highest percentage of thinning fruits at 450 mg L-1, with averages of 67.6% and 70.0%, respectively. However, benzyladenine had a phytotoxic effect when applied at highest concentrations, 300 and 450 mg L-1, respectively. The ethephon enabled greater production of larger caliber fruits in the highest concentration (450 mg L-1).  Chemical thinning reduced total operational cost and increased operating profit by 7.57%, as compared to hand thinning.  Results also presented that chemical fruit thinning provided equilibrium yield of 4.98 t ha-1 for ‘Paluma’ guava fruit, as fresh fruit.

 


Keywords


Psidium guajava L.; Plant growth regulators; Ethefhon; Benzyladenine; Economic analysis.

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References


Abbas, M. M., Ahmad, S., & Javaid, M. A. (2014). Effect of naphthalene acetic acid on flower and fruit thinning of summer crop of guava. Journal of Agricultural Research, 52(1), 111-116. Retrieved from https://apply.jar.punjab.gov.pk/upload/1396007891_112_Microsoft_Word_-_11._4224.pdf

Ahrens, R. de B., Pavanello, A. P., Ahren, D. C., Francisco, A. C. de, & Ayub, R. A. (2014). Análisis económico del raleo químico y hand en ciruela. Revista de Ciencia y Tecnología de América, 39(10), 723-726. Retrieved from https://www.redalyc.org/pdf/339/33932433007.pdf

Anzanello, R., & Tedesco, A. (2017). Chemical thinning of flowers and fruits of the peach cultivar Coral with hydrogen cyanamide. Ciência Rural, 47(10), ed.20151498. doi: 10.1590/0103-8478cr20151498

Cavalini, F. C., Jacomino, A. P., Trevisan, M. J., & Miguel, A. C. A. (2015). Harvest time and quality of Kumagai and Paluma guavas. Revista Brasileira de Fruticultura, 37(1), 64-72. doi: 10.1590/0100-2945-013/14

Companhia de Entrepostos e Armazéns Gerais de São Paulo (2020). Hortiescolha - Goiaba. Retreived from http://www.ceagesp.gov.br/entrepostos/servicos/hortiescolha/goiaba/

Dennis, F. G., Jr. (2000). The history of fruit thinning. Plant Growh Regulating, 31(1), 1-16. doi: 10.1023/A: 1006330009160

Dhillon, J. S., Boora, R. S., Gill, D. S., & Arora, N. K. (2018). Effect of different chemicals and hand thinning on crop regulation in guava (Psidium guajava L.) cv. Shweta. Agricultural Research Journal, 55(2), 365-369. doi: 10.5958/2395-146X.2018.00067.4

Empresa Brasileira de Pesquisa Agropecuária (2006). Sistema brasileiro de classificação de solos (2a ed.). Rio de Janeiro: Embrapa. Recuperado de https://www.embrapa.br/en/busca-de-publicacoes/-/publicacao /1094003/sistema-brasileiro-de-classificacao-de-solos

Giovanaz, M. A., Bartz, J., Pasa, M. S., Chaves, F. C., & Fachinello, J. C. (2016). Chemical thinning affects yield and return flowering in ‘Jubileu’ peach. Revista Ceres, 63(3), 329-333. doi: 10.1590/0034-737X 201663030008

Iqbal, N., Khan, W. A., Ferrante, A., Trivellini, A., Francini, A., & Khan, M. I. R. (2017). Ethylene role in plant growth, development and senescence: Interaction with other phytohormones. Frontiers in Plant Science, 8, article 175, 1-19. doi: 10.3389/fpls.2017.00475

Khan, N., Abbasi, A. M., Dastagir, G., Nazir, A., Shah, G. M., Shah, M. M., & Shah, M. H. (2014). Ethnobotanical and antimicrobial study of some selected medicinal plants used in Khyber Pakhtunkhwa (KPK) as a potential source to cure infectious diseases BMC Complement. Alternative Medicine, 14(4), 122. doi: 10.1186/1472-6882-14-122 Retrieved from https://pubmed.ncbi.nlm.nih.gov/24708514/

Kretzschmar, A. A., Marodin, G. A. B., Duarte, V., Valdebenito-Sanhueza, R. M., & Guerra, D. S. (2007). Efeito de fitorreguladores sobre a incidência de podridão carpelar em maçãs ‘Fuji’. Revista Brasileira de Fruticultura, 29(3) 414-419. doi: 10.1590/S0100-29452007000300003

Link, H. (2000). Significance of flower and fruit thinning on fruit quality. Plant Growth Regulation, 31, 17-26. doi: 10.1023/A:1006334110068

Mahmood, S., Mohamaad, N. H., Ali, S. M. Y., Ripa, R. A., & Hossain, M. G. (2016). Effect of plant plant growth regulators on fruit set and quality of guava. Turkist Journal of Agriculture - Food Science and Technology, 4(12), 1088-1091. doi: 10.24925/turjaf.v4i12.1088-1091.799

Matsunaga, M., Bemelmans, P. F., Toledo, P. E. N. de, Delley, R. D., Okawa, H., & Pedroso, I. A. (1976). Metodologia de custo de produção utilizado pelo IEA. Agricultura em São Paulo, 23(1), 123-139. Recuperado de http://www.iea.sp.gov.br/ftpiea/rea/tomo1_76/artigo3.pdf

Meland, M., & Birken, E. (2010). Ethephon as a blossom and fruitlet thinner affects crop load, fruit weight and fruit quality of the European plum cultivar ‘Jubileum’. Acta Horticulturae, 884, 315-321. doi: 10. 17660/ActaHortic.2010.884.36

Pavanello, A. P., & Ayub, R. A. (2012). Aplicação de ethephon no raleio químico de ameixeira e seu efeito sobre a produtividade. Revista Brasileira de Fruticultura, 34(1), 309-316. doi: 10.1590/S0100-294520 12000100040

Ramos, D. P., Leonel, S., Silva, A. C., Souza, M. E., Souza, A. P., & Fragoso, A. M. (2011). Pruning times in seasonality, yield and quality of ‘Paluma’ guava fruits. Semina: Ciências Agrárias, 32(3), 909-918. doi: 10.5433/1679-0359.2011v32n3p909

Ribeiro, L. R., Leonel, S., Souza, J. M. A., Garcia, E. L, Leonel, M., Monteiro, L. N. H.,... Ferreira, R. B. (2020). Improving the nutritional value and extending shelf life of red guava by adding calcium chloride. LWT-Food Science and Technology, 130(2020), 109655. doi: 10.1016/j.lwt.2020.109655

Safaei-Nejad, G., Shahsavar, A. R., & Mirolesmani, A. (2015). Effects of naphthalene acetic acid and carbaryl on fruit thinning in ‘Kinnow’ mandarin trees. Journal of Chemical Health Risks, 5(2), 137-144. doi: 10.22034/JCHR.2015.544101

Schröder, M. (2013). Correlative polar auxin transport to explain the thinning mode of action of benzyladenine on apple. Sciencia Horticulturae, 153(4), 84-92. doi: 10.1016/j.scienta.2013.02.001

Silva, M. J. R., Tecchio, M. A., Domiciano, S., Leonel, S., & Balestero, R. (2016). Phenology, yield and fruit quality of ‘Paluma’ guava tree at different pruning times. Ciência e Agrotecnologia, 40(3), 317-325. doi: 10.1590/1413-70542016403033315

Tokairin, T. de O., Capello, F. P., & Spósito, M. B. (2014). Production cost for table guavas produced with and without bagging: case study. Revista Brasileira de Fruticultura, 36(3), 542-549. doi: 10.1590/0100-2945-347/13

Torres, E., Giné-Bordonaba, J., & Asín, L. (2021). Thinning flat peaches with ethephon and its effect on endogenous Ethylene production and fruit quality. Scientia Horticulturae, 278(27), 109872. doi: 10.10 16/j.scienta.2020.109872

Vitti, K. A., Lima, L. M., & Martines, J. G. M., Fº. (2020). Agricultural and economic characterization of guava production in Brazil. Revista Brasileira de Fruticultura, 42(1), e447. doi: 10.1590/0100-2945202 0447

Zwack, P. J., Robinson, B. R., Risley, M. G., & Rashotte, A. M. (2013). Cytokinin response factor 6 negatively regulates leaf senescence and is induced in response to cytokinin and numerous abiotic stresses. Plant Cell Physiology, 54(6), 971-981. doi: 10.1093/pcp/pct049




DOI: http://dx.doi.org/10.5433/1679-0359.2021v42n5p2769

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional