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Effect of different fertilization protocols and cutting intensity on marandu grass

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dc.contributor.authorRibeiro, A.S.
dc.contributor.authorPires, A.J.V.
dc.contributor.authorFries, D.D.
dc.contributor.authorSantos, D.C.
dc.contributor.authorDutra, I.C.
dc.contributor.authorOliveira, G.R.S.
dc.contributor.authorSousa, M.P.
dc.contributor.authorPúblio, P.P.P.
dc.contributor.authorSilva, H.S.
dc.contributor.authorSantos, A.P.S.
dc.contributor.authorAmorim, S.S.
dc.date.accessioned2025-08-11T11:12:57Z
dc.date.available2025-08-11T11:12:57Z
dc.date.issued2025
dc.descriptionReceived: January 31st, 2025 ; Accepted: June 20th, 2025 ; Published: June 27th, 2025 ; Correspondence: amanda.s.ri@hotmail.comeng
dc.description.abstractThe present study aimed to investigate the effects of different cutting intensities, combined with different fertilizations, on the productive characteristics, carbohydrate concentration and photosynthetic pigments of Urochloa brizantha cv. Marandu. It was carried out in a completely randomized design in which five fertilization treatments were evaluated: a control treatment without fertilizers and four fertilizer combinations (PK; NP; NK; NPK). The cutting intensities tested were 10 and 20 cm in height. There were four replicates per treatment. Plastic pots of 12 liters were used as experimental units, which were filled with 10 dm³ of soil with a clayey-sandy loam texture. Seeds of Urochloa brizantha cv. Marandu, with 80% of cultural value, were used. There was a significant difference for fertilization with NP and NPK, which resulted in higher production of shoot dry mass (PMSPA), residue dry mass (PMSRE) and root dry mass (PMSRA)in addition to higher concentrations of total soluble sugars in the shoot, residue and root. At a cutting intensity of 20 cm, NK and NPK fertilizations provided the highest levels of chlorophyll a. On the other hand, when analysing chlorophyll b and total chlorophyll at an intensity of 10 cm, NK fertilization presented the highest levels. However, at an intensity of 20 cm, NPK fertilization presented the highest levels of chlorophyll b, carotenoids and total chlorophyll. Regarding starch content, the PK and NPK treatments presented lower values at an intensity of 10 cm, while, at an intensity of 20 cm, NK fertilization resulted in the lowest starch content. Given the results presented, it is concluded that the use of NP fertilization at an intensity of 20 cm is recommended because it provides better indices on photosynthetic pigments, productive characteristics and total soluble sugar contents of Urochloa brizantha cv. Marandu.eng
dc.identifier.citationRibeiro, A. S., Pires, A. J. V., Fries, D. D., Santos, D. C., Dutra, I. C., Oliveira, G. R. S., Sousa, M. P., Públio, P. P. P., Silva, H. S., Santos, A. P. S., & Amorim, S. S. (2025). Effect of different fertilization protocols and cutting intensity on marandu grass. https://doi.org/10.15159/AR.25.056en
dc.identifier.issn2228-4907
dc.identifier.publicationAgronomy Research, 2025, vol. 23, Special Issue 2, pp. 915–924eng
dc.identifier.urihttp://hdl.handle.net/10492/10083
dc.identifier.urihttps://doi.org/10.15159/ar.25.056
dc.publisherEstonian University of Life Scienceseng
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)eng
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectchemical fertilizationeng
dc.subjectcutting intensityeng
dc.subjectgrasseseng
dc.subjectarticleseng
dc.titleEffect of different fertilization protocols and cutting intensity on marandu grasseng
dc.typeArticleeng

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2025, Vol. 23, Special Issue 2