Micronutrient content and accumulation in leaves and bunches of black pepper during two crop cycles

Dalazen, Jéssica Rodrigues; Valani, Gustavo Pereira; Gontijo, Ivoney; Dias, Jairo Rafael Machado; Partelli, Fábio Luiz

doi:10.1590/0034-737X202269050013

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Soils and Plant Nutrition • Rev. Ceres 69 (5) • Sep-Oct 2022 • https://doi.org/10.1590/0034-737X202269050013 copy

Micronutrient content and accumulation in leaves and bunches of black pepper during two crop cycles¹ 1 This work is part of the first author’s master thesis (MSc in Tropical Agriculture at Universidade Federal do Espírito Santo), which was supported by Fundação de Amparo à Pesquisa e Inovação do Espírito Santo (FAPES).

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ABSTRACT

A comprehensive knowledge about micronutrient dynamics in leaves and bunches of black pepper is needed in order to proper diagnose nutrient needs, and thus facilitate fertilization management. This study aimed to evaluate micronutrient concentration and accumulation in leaves and bunches of black pepper bunches to understand the crop nutritional demand. The experiment was carried out on in a commercial field of Piper nigrum ‘Bragantina’ located in São Mateus, Espírito Santo, Brazil. Composite samples of leaves and bunches were taken periodically during two crop cycles and the concentration of Fe, Zn, Mn, Cu, and B were assessed. The micronutrient accumulation curves behaved linearly and quadratically, reaching the maximum accumulation point during the time of harvesting. Fe, Mn and B were the micronutrients with highest concentration in both bunches and leaves of black pepper. The nutrient concentration in leaf tissues varied seasonally. These results may contribute to a more sustainable agriculture, in which fertilization rates should consider different needs through the crop stage.

Keywords
Piper Nigrum L.; nutrient dynamics; mineral composition; nutritional management

	LEAF CONCENTRATION
Source of variation	Iron	Zinc	Copper	Manganese	Boron
Source of variation	Mean Square Value
Overall experimental period	108.24^ ns, non-significant and significant at 1% error probability, respectively.	24.44^ ns, non-significant and significant at 1% error probability, respectively.	10.93^ ns, non-significant and significant at 1% error probability, respectively.	1,103.26^ ns, non-significant and significant at 1% error probability, respectively.	50.80^ ns, non-significant and significant at 1% error probability, respectively.
CV (%)	6.16	10.44	9.72	12.63	11.40
	BUNCH CONCENTRATION
Cycle 1	1,064.42^ ns, non-significant and significant at 1% error probability, respectively.	410.50^ ns, non-significant and significant at 1% error probability, respectively.	2.95^ns ns, ** non-significant and significant at 1% error probability, respectively.	895.32^ ns, non-significant and significant at 1% error probability, respectively.	1,884.29^ ns, non-significant and significant at 1% error probability, respectively.
Cycle 2	588.57^ ns, non-significant and significant at 1% error probability, respectively.	264.90^ ns, non-significant and significant at 1% error probability, respectively.	20^ ns, non-significant and significant at 1% error probability, respectively.	247.59^ ns, non-significant and significant at 1% error probability, respectively.	1,487.93^ ns, non-significant and significant at 1% error probability, respectively.
CV ₁ (%)	4.63	13.32	9.89	13.45	13.39
CV₂ (%)	8.23	9.72	9.56	13.58	8.54

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[1] *Corresponding author: fabio.partelli@ufes.br