DOSES E PARCELAMENTO DA ADUBAÇÃO NITROGENADA NA PRODUTIVIDADE E QUALIDADE DA RÚCULA

Palavras-chave: Eruca sativa. Nitrato. Nutrição mineral.

Resumo

O parcelamaneto da adubação nitrogenada pode ser uma estratégia eficiente de gerenciamento nutricional para melhorar a produtividade, qualidade das plantas e reduzir o impacto ambiental negativo causado pelas perdas de nitrogênio (N).Nesse contexto, o presente estudo investigou o efeito do manejo de N nas características agronômicas de plantas de rúcula cultivadas em campo. Foram avaliados nove tratamentos, em delineamento experimental de blocos ao acaso, em esquema fatorial 4 x 2 + 1, com três repetições. Os fatores avaliados foram doses de N (60, 120, 180 e 240 kg ha-1 de N),  parcelamento da adubação nitrogenada em cobertura (duas e três vezes) e um tratamento adicional sem a aplicação  de N. Máxima altura foi obtida com a aplicação de 198 kg ha-1 de N. O aumento das doses de N promoveu o aumento do teor de nitrato, da massa fresca e da produtividade da rúcula. Não houve efeito do parcelamento da adubação nitrogenada em cobertura nas características avaliadas. Assim, o fornecimento de 240 kg ha-1 de N, aplicado em duas parcelas foi considerado como o melhor manejo.

 

Referências

AHMED, M. et al. Excessive use of nitrogenous fertilizers: an unawareness causing serious threats to environment and human health. Environmental Science and Pollution Research, 24: 26983-26987, 2017.

ANJANA, A.; UMAR, S. Nitrogenous Fertilizers – Boon or Bane? Journal of Plant Science, 2: 106-114, 2017.

BARBOSA, J. C.; MALDONADO JÚNIOR, W. Experimentação Agronômica & AgroEstat: Sistema para análises estatísticas de ensaios agronômicos. 1. ed. Jaboticabal, SP: Gráfica Multipress Ltda, 2015. 396 p.

BARROS JÚNIOR, A. P. et al. Nitrate accumulation in lettuce and rocket in response to nitrogen fertilization in intercropping. Revista Caatinga, 33: 260-265, 2020.

BONASIA, A. et al. Nutritional, biophysical and physiological characteristics of wild rocket genotypes as affected by soilless cultivation system, salinity level of nutrient solution and growing period. Frontiers in Plant Science, 8: 1-15, 2017.

BRAAKHEKKE, M. C. et al. Nitrogen leaching from natural ecosystems under global change: a modelling study. Earth System Dynamics, 8: 1121–1139, 2017.

CATALDO, D. A. L. et al. Rapid colorimetric determination of nitrate in plants tissue by nitration of salicylic acid. Communication in Soil Science and Plant Analysis, 6: 71-80, 1975.

CAVAIUOLO, M.; FERRANTE, A. Nitrates and glucosinolates as strong determinants of nutritional quality in rocket leafy salads. Nutrients, 6: 1519-1538, 2014.

CECÍLIO FILHO, A. B. et al. Growing seasons and fractional fertilization for arugula. Comunicata Scientiae, 5: 252-258, 2014.

COLLA, G. et al. Nitrate in fruits and vegetables. Scientia Horticulturae, 237: 221-238, 2018.

DURAZZO, A. et al. Italian Wild Rocket [Diplotaxis Tenuifolia (L.) DC.]: Influence of agricultural practices on antioxidant molecules and on cytotoxicity and antiproliferative effects. Agriculture, 3: 285–298, 2013.

EC - European Commission. Commission Regulation (EC) No 1258/2011 of 2 December 2011 amending Regulation (EC) No 1881/2006 as regards maximum levels for nitrates in foodstuffs setting. Official Journal of the European Union, 320: 15-17, 2011.

JASPER, J.; WAGSTAFF, C.; BELL, L. Growth temperature influences postharvest glucosinolate concentrations and hydrolysis product formation in first and second cuts of rocket salad. Postharvest Biology and Technology, 163: 111157, 2020.

KABIR, T. et al. Adjusting Nitrogen Rates with Split Applications: Modelled Effects on N Losses and Profits Across Weather Scenarios. European Journal of Agronomy, 129: 126328, 2021.

KANT, S. Understanding nitrate uptake, signaling and remobilisation for improving plant nitrogen use efficiency. Seminars in Cell & Developmental Biology, 74: 89-96, 2017.

LIU, C. W et al. Effects of Nitrogen Fertilizers on the Growth and Nitrate Content of Lettuce (Lactuca sativa L.). International Journal Environmental Research Public Health, 11: 4427–4440, 2014.

MEN, S. et al. Effects of supplemental nitrogen application on physiological characteristics, dry matter and nitrogen accumulation of winter rapeseed (Brassica napus L.) under waterlogging stress. Scientific Reports, 10: 20201, 2020.

MIYAZAWA, M. et al. Análises químicas de tecido vegetal. In: SILVA, F. C. (Ed.). Manual de análises químicas de solos, plantas e fertilizantes. 2. ed. Brasília, DF: EMBRAPA, 2009. cap. 1, p. 190-223.

MORAIS E. G. et al. Growth and accumulation of macronutrients in arugula. International Journal of Advanced Engineering Research and Science, 7: 176-183, 2020.

NASCIMENTO, C. S.; NASCIMENTO, C. S.; CECÍLIO FILHO, A. B. N:K ratio for phenological growth stages of net melon cultivated in NFT hydroponic system. Revista Caatinga, 33: 108-115, 2020.

NASCIMENTO, C. S.; NASCIMENTO, C. S.; CECÍLIO FILHO, A. B. Economic feasibility of lettuce intercropped with rocket in function of spacing and growing season. Revista Caatinga, 31: 106-116, 2018.

SANTAMARIA, P.; ELIA, A. Producing nitrate-free endive heads: effect of nitrogen form on growth, yield and ion composition of endive. Journal of the American Society for Horticultural Science, 122: 140-145, 1997.

SANTOS, H. G. et al. Sistema brasileiro de classificação de solos. 5. ed. Brasília, DF: EMBRAPA, 2018. 355 p.

SCHIATTONE, M. I. et al. Impact of irrigation regime and nitrogen rate on yield, quality and water use efficiency of wild rocket under greenhouse conditions. Scientia Horticulturae, 229: 182-192, 2018.

SILVA, P. H. S. et al. Nitrogen rates on growth, yield and nitrate foliar content of arugula. Revista Caatinga, 34: 380 – 387, 2021.

TRANI, P. E.; PASSOS, F. A.; AZEVEDO FILHO, J. A. Alface, almeirão, chicória, escarola, rúcula e agrião d’agua. In: RAIJ, B. van et al. (Eds.). Recomendação de adubação e calagem para o estado de São Paulo (Boletim Técnico, 100). 2. ed. Campinas, SP: Instituto Agronômico, 1997. cap. 18, p. 168-169.

UMAR, S. et al. Nitrate management approaches in leafy vegetables. In: UMAR, S.; ANJUM, N. A.; KHAN, N. A. (Eds.). Nitrate in Leafy vegetables: Toxicity and safety measures. New Delhi, DL: I.K. International Publishing House Pvt. Ltd, 2013. v. 1, cap. 7, p. 166-181.

WEIGHTMAN, R. M. et al. Factors influencing tissue nitrate concentration in field-grown wild rocket (Diplotaxis tenuifolia) in southern England. Food Additives & Contaminants: Part A: Chemistry, Analysis, Control, Exposure & Risk Assessment, 29: 1425-1435, 2012.

Publicado
2021-09-27
Seção
Agronomia