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Leaf anatomy of Urochloa brizantha and Urochloa ruziziensis (Poaceae) plants subjected to different fertilization management practices

Authors :
Ester Marques Magalhães Teixeira
Jaqueline Dias-Pereira
Luís César Dias Drumond
Pedro Ivo Vieira Good God God
Hugo Humberto de Araújo Araújo
Source :
Agronomy Science and Biotechnology. 8:1-14
Publication Year :
2022
Publisher :
Editora Mecenas Ltda, 2022.

Abstract

Brazilian agribusiness is heavily influenced by beef export. Thus, it is important to evaluate the quality and growth rate of forage species used as cattle food. Given that the structural organization of leaf cells and tissues is directly related to forage-plant growth, we aimed to analyze the foliar anatomy of Urochloa brizantha and U. ruziziensis subjected to different fertilization management practices. Experimental design was completely randomized split-split-plots. Plots were allocated to fertilization strategies, namely single and split fertilizer application. Subplots were allocated to two fertilizer doses for the carrying capacities of 7 and 10 head of cattle per hectare (AU ha-1). Sub-subplots were distributed to the forage plant species U. brizantha and U. ruziziensis. Three leaves were collected from each treatment for the anatomical processing of cross-sections, epidermal imprints and diaphanizations. Based on a parsimonious model, U. brizantha showed thicker leaf tissues than U. ruziziensis. Split fertilizer application increased thickness of the adaxial and abaxial cuticle and of bulliform cells. Fertilizer dose of the higher carrying capacity determined increased thickness of the leaf blade, bulliform cells, and regular homogeneous parenchyma on both studied species. We concluded that increased fertilizer dose and split application interfere with the leaf anatomy of U. brizantha and U. ruziziensis, providing both species with enhanced growth and yield.

Details

ISSN :
23591455
Volume :
8
Database :
OpenAIRE
Journal :
Agronomy Science and Biotechnology
Accession number :
edsair.doi...........50933519c59b0a2a9d41c8ea6187e532
Full Text :
https://doi.org/10.33158/asb.r159.v8.2022