Nutrient reference values for ‘BRS Platina’ banana in improved fertility soils

IF 1.2 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY Ciencia E Agrotecnologia Pub Date : 2022-01-01 DOI:10.1590/1413-7054202246008722

M. Santos, S. Donato, J. Neves, P. R. Marques, M. C. Pereira, M. G. V. Rodrigues

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Abstract

ABSTRACT Reference values of leaf nutrient contents are essential for nutritional assessment of plants. The objective was to establish nutritional reference values for ‘BRS Platina’ banana in improved fertility soil, using the sufficiency range (SR), border Line (BL) and mathematical chance (MCh) methods, in addition to the critical level obtained by the reduced normal distribution (CLz). The study was carried out in Guanambi-BA, considering nutrient contents and yields of an experiment arranged in randomized blocks, 5 x 6 factorial scheme, with five doses of K2O (0, 200, 400, 600 and 800 kg ha-1) supplied with fertilizers for organic management and six sampling times (210; 390; 570; 750; 930 and 1,110 days after planting), totaling 90 plots. Plots with high yield, ≥ 38.40 t ha-1, formed the reference population and plots with yield ≥ 47.43 t ha-1 formed the reference subpopulation. There was convergence between the optimal values obtained by the methods evaluated. Therefore, the reference values adjusted by the SR, BL, MCh and CLz methods can be used with assertiveness to interpret the foliar analysis of the ‘BRS Platina’ banana in improved fertility soils. Furthermore, among these, MCh stands out as it provides narrower optimal ranges.

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改良肥力土壤中“BRS Platina”香蕉的养分参考值

叶片养分含量的参考值是植物营养评价的重要依据。目的是在利用简化正态分布(CLz)获得临界水平的基础上，利用充足范围(SR)、边界线(BL)和数学机会(MCh)方法，建立改良肥力土壤中“BRS Platina”香蕉的营养参考值。本研究采用5 × 6因子随机分组方案，在关南坝进行5个K2O剂量(0、200、400、600和800 kg hm -1)的有机施肥试验，6个采样次数(210;390;570;750;种植后930天和1110天)，共90块。高产地(≥38.40 t ha-1)构成参考种群，高产地(≥47.43 t ha-1)构成参考亚种群。所评价的方法得到的最优值之间存在收敛性。因此，SR、BL、MCh和CLz方法调整后的参考值可以较为准确地解释改良肥力土壤中“BRS Platina”香蕉的叶面分析。此外，其中MCh的突出之处在于它提供了更窄的最佳范围。

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来源期刊

Ciencia E Agrotecnologia 农林科学-农业综合

CiteScore

2.30

自引率

9.10%

发文量

审稿时长

6-12 weeks

期刊介绍： A Ciência e Agrotecnologia, editada a cada 2 meses pela Editora da Universidade Federal de Lavras (UFLA), publica artigos científicos de interesse agropecuário elaborados por membros da comunidade científica nacional e internacional. A revista é distribuída em âmbito nacional e internacional para bibliotecas de Faculdades, Universidades e Instituições de Pesquisa.