Slow-release and organic fertilizers on early growth of Rangpur lime

Revista Ceres

Daniel Lucas Magalhães Machado¹  Cícero Cartaxo De Lucena¹  Dierlei Dos Santos¹  Dalmo Lopes De Siqueira¹  Pedro Henrique Monteiro Matarazzo¹  Tiago Barbosa Struiving¹ 

关键词: Fertilization;    organic fertilizer;    Citrus limonia L. Osbeck;    Adubação;    fertilizante orgânico;    Citrus limonia L. Osbeck;   

DOI  :  10.1590/S0034-737X2011000300017

来源: SciELO

【 摘 要 】

Slow-release and organic fertilizers are promising alternatives to conventional fertilizers, as both reduce losses by leaching, volatilization and problems of toxicity and/or salinity to plants. The objective of this work was to evaluate the effect of different rates of the organic fertilizer Humato-Macota® compared with the slow-release fertilizer Osmocote® on the growth and nitrogen content in the dry matter of Rangpur lime. A field experiment was conducted in a factorial completely randomized design with an additional treatment (4 x 4 +1). The first factor consisted of four Humato­Macota® rates (0, 1, 2, and 3%) applied to the substrate; the second factor consisted of the same Humato-Macota® concentrations, but applied as fortnightly foliar sprays; the additional treatment consisted of application of 5 kgm-3 Osmocote® 18-05-09. Means of all growth characteristics (plant height, total dry matter, root/shoot ratio and leaf area) and the potential quantum yield of photosystem II (Fv/Fm) were higher when plants were fertilized with the slow-release fertilizer. The organic fertilizer applied alone did not meet the N requirement of Rangpur lime.

【 授权许可】

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