咖啡树叶面疏溶硼锌肥特性及利用效率研究

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY Bragantia Pub Date : 2021-06-04 DOI:10.1590/1678-4499.20200329
L. O. Macedo, Dirceu Mattos Jr, Rodrigo Jacobassi, G. Petená, J. A. Quaggio, R. M. Boaretto
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引用次数: 4

摘要

尽管咖啡工业为农业提供了许多肥料来源,但咖啡种植园仍然存在硼和锌的缺乏。疏溶性肥料(SSF)已在一些国家使用多年。然而,它们在叶片上的有效性存在很大争议,关于它们的使用效率的信息仍然缺乏。实验设置描述B的社保基金根据粒子大小和锌的肥料,和粒子的扩散和保留叶子,比较社保基金(氧化硼酸钙、锌和硼酸锌)和可溶性来源(硼酸和硫酸锌)在四个剂量(mg.L-1):实验我(B 0, 130, 260, 520),实验二世(锌0、200、600和1800年),和实验3 (B 0, 129, 387,和锌0,200年,600年和1800年),咖啡树提供B和锌。结果表明,咖啡叶表面吸附有SSF微粒,其中氧化锌的粒径最小。SSFs能有效提高咖啡叶片中锌和B的浓度。270毫克咖啡的干物质增加了15%。L-1的B作为硼酸钙384毫克。L-1的B变成硼酸。叶面施用氧化锌1800毫克。L-1 Zn可使植株叶面积增加。高剂量的硫酸锌由于高盐浓度而对咖啡植株产生毒性。残留在咖啡叶表面的微颗粒增加了叶片中B和Zn的浓度,这解释了干物质测量的变化,并显示了SSF在开发肥料方面的潜力,以提高咖啡中微量营养素的可用性。
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Characterization and use efficiency of sparingly soluble fertilizer of boron and zinc for foliar application in coffee plants
ABSTRACT Deficiencies of boron and zinc occur in coffee plantations despite the many fertilizer sources offered by the industry for the agriculture. Sparingly soluble fertilizers (SSF) have been used in several countries for many years. However, their effectiveness when applied to leaves is highly contested, and information about their use efficiency is still lacking. Experiments were set up to characterize the SSF of B and Zn according to particle size of fertilizers, and the spreading and retention of the particles in the leaf, comparing SSF (calcium borate, Zn oxide, and Zn borate) with soluble sources (boric acid and Zn sulfate) in four doses (mg.L-1): Experiment I (B 0, 130, 260, and 520), Experiment II (Zn 0, 200, 600, and 1,800), and experiment III (B 0, 43, 129, and 387, and Zn 0, 200, 600, and 1,800), to supply B and Zn for coffee plants. Microparticles of the SSF were found adhered to coffee leaves, and the Zn oxide was the one with the smallest particle size. SSFs were effective at increasing the Zn and B leaf concentrations in coffee. Dry matter of coffee increased 15% with applications of 270 mg.L-1 of B as calcium borate and 384 mg.L-1 of B as boric acid. Foliar application of Zn oxide at the dose of 1,800 mg.L-1 of Zn increased the leaf areas of the plants. High doses of Zn sulfate caused toxicity to coffee plants due to high saline concentrations. The microparticles found retained on the surface of the coffee leaves increased leaf concentration of B and Zn, which explained variations in the dry matter measurements and show the potential of the SSF for the development of fertilizers to improve the availability of micronutrients to coffee.
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来源期刊
Bragantia
Bragantia AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
2.40
自引率
8.30%
发文量
33
审稿时长
4 weeks
期刊介绍: Bragantia é uma revista de ciências agronômicas editada pelo Instituto Agronômico da Agência Paulista de Tecnologia dos Agronegócios, da Secretaria de Agricultura e Abastecimento do Estado de São Paulo, com o objetivo de publicar trabalhos científicos originais que contribuam para o desenvolvimento das ciências agronômicas. A revista é publicada desde 1941, tornando-se semestral em 1984, quadrimestral em 2001 e trimestral em 2005. É filiada à Associação Brasileira de Editores Científicos (ABEC).
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