Chemical attributes of an Oxisol with the addition of conilon coffee straw biochar

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY
A. C. Alvarenga, R. R. Passos, F. V. Andrade, E. Mendonça, O. Rangel, Lázaro Longue Mosa
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引用次数: 0

Abstract

Abstract The objective of this work was to evaluate the effects of increasing rates of biochar produced with coffee straw, at two pyrolysis temperatures, on the chemical attributes of an Oxisol cultivated with conilon coffee (Coffea canephora) and on the nutrient content of coffee tree leaves. Treatments consisted of pyrolysis at two temperatures (350 and 600 °C) and of five biochar rates (0, 5, 10, 15, and 20 Mg ha-1). The following soil chemical attributes were evaluated: pH in water; P, K, Ca, Mg, Al, H+Al, Zn, Cu, Fe, and Mn contents; effective and potential cation exchange capacity (CEC); sum of bases (SB); base (V) and aluminium (m) saturation; and N, P, K, Ca, Mg, Zn, Cu, Fe, and Mn contents in the leaves. The biochar produced at 600°C, at rates of 10 and 15 Mg ha-1, promoted a greater K release into the soil. Regardless of temperature, coffee straw biochar increased K and P availability, sum of bases, base saturation, and CEC in the soil, but did not influence macro- and micronutrient contents in the leaves. The addition of increasing rates of coffee straw biochar in the soil increases P, K, Mg, SB, CEC, and V, regardless of pyrolysis temperature.
添加康尼隆咖啡秸秆生物炭的氧化溶胶的化学性质
摘要本研究的目的是评价在两种热解温度下,增加咖啡秸秆生产生物炭的速率对conilon咖啡(Coffea canephora)培养的Oxisol的化学性质和咖啡树叶片营养成分的影响。处理包括两种温度(350和600°C)和五种生物炭速率(0、5、10、15和20 Mg ha-1)的热解。评估了以下土壤化学属性:水中pH值;P、K、Ca、Mg、Al、H+Al、Zn、Cu、Fe、Mn含量;有效和潜在阳离子交换容量(CEC);碱和(SB);碱(V)和铝(m)饱和度;叶片中N、P、K、Ca、Mg、Zn、Cu、Fe和Mn的含量。在600°C下,以10和15 Mg ha-1的速率生产的生物炭促进了更多的钾释放到土壤中。在不同温度下,咖啡秸秆生物炭增加了土壤钾、磷有效性、碱基总和、碱基饱和度和CEC,但对叶片中宏量和微量元素含量没有影响。与热解温度无关,土壤中添加咖啡秸秆生物炭增加了P、K、Mg、SB、CEC和V。
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来源期刊
Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuaria Brasileira 农林科学-农业综合
CiteScore
1.20
自引率
0.00%
发文量
45
审稿时长
9-18 weeks
期刊介绍: Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science. Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.
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