Charcoal fine residues used as biochar in heavy clayey soil improve carrot production

IF 1.2 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY

Ciencia E Agrotecnologia Pub Date : 2022-01-01 DOI:10.1590/1413-7054202246004522

Ademir Ribeiro de Mendonça, J. O. Cazetta, Paula Wellen Barbosa Gonçalves

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Abstract

ABSTRACT Carrot plants do not develop well in clayey soils. In its turn, the charcoal fine (CF), which is a residue composed of porous particles, has the potential to be mixed in the soil to reduce its density. However, there is no evidence that the application of CF improves carrot production in clayey soil. Thus, an experiment in pots was designed, consisting of 16 treatments composed of the combination of 5 sizes of CF particles (1-2 mm, 2-4 mm, 4-8 mm, 8-16 mm, 16-32 mm) with 3 volumetric rates of CF (25%, 50% and 75%, plus a control (soil alone), aiming to verify which situation promotes the better plant growth and production. It was observed that mixing CF into the soil decreases substrate density and increases substrate water retention. The results of this research also revealed that the highest yield (fresh and dry weight) of carrots was achieved with CF mixed with the soil at a rate of 50%, using a CF particle size of 2-4 mm. The greatest length and diameter of carrots were obtained with a dose of CF of around 45%. CF-containing substrates delayed initial plant growth up to 45 DAE, but increased plant development after 75 DAE and improved plant performance and carrot yield measured at the harvest time (90 DAE).

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炭粉残渣在重质粘土中用作生物炭可提高胡萝卜产量

胡萝卜在黏质土壤中发育不良。反过来，炭粉(CF)是一种由多孔颗粒组成的残留物，有可能混入土壤中以降低其密度。然而，没有证据表明施用CF能提高粘土土壤中胡萝卜的产量。为此，设计了盆栽试验，采用5种粒径(1-2 mm、2-4 mm、4-8 mm、8-16 mm、16-32 mm)的CF颗粒和3种体积率(25%、50%和75%)，再加上对照(土壤单独)，共16个处理，验证哪种情况下能更好地促进植物生长和生产。土壤中掺入CF降低了基质密度，增加了基质保水能力。本研究的结果还表明，使用CF粒度为2-4 mm，以50%的比例与土壤混合，可以获得最高的胡萝卜产量(新鲜和干重)。当CF用量为45%左右时，胡萝卜的长度和直径最大。含cf的基质延迟植株生长至45 DAE，但在75 DAE后促进植株发育，提高植株性能和收获时(90 DAE)的胡萝卜产量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.