Abstract Soil management practices with herbicide and fertilizers application may change the soil properties. The amplitude of the change varies according to the soil property and management system. The aim of this study was to evaluate the effects of glyphosate and zinc on the chemical and biological properties in two soil types (Typic Hapludox [TH] and Ustoxix Quartzipsamment [UQ]). Two soybean cultivars (conventional BRS 133 and its essentially derived transgenic line, BRS 245RR, with and without glyphosate application) and five Zn rates (0, 5, 10, 20, and 40 mg kg − 1) with four replicates were studied. Nodule dry weight (NDW), microbial biomass carbon (MBC), and soil chemical attributes were evaluated. Glyphosate application resulted in differences in MBC between the two soils types with a significant cultivar × Zn rate interaction, while NDW revealed the effects of Zn rates and cultivars under TH, and Zn rates under UQ. The cultivars and the Zn rates did not influence any of the soil chemical attributes, excluding available Zn. Mehlich 1 and DTPA-TEA extractants were effective for the determination of available Zn in the soil.

中文翻译：

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大豆植物中施用草甘膦和锌对化学和生物学特性的影响

摘要 施用除草剂和化肥的土壤管理实践可能会改变土壤性质。变化幅度因土壤性质和管理制度而异。本研究的目的是评估草甘膦和锌对两种土壤类型（典型 Hapludox [TH] 和 Ustoxix Quartzipsamment [UQ]）的化学和生物特性的影响。研究了两个大豆栽培品种（常规 BRS 133 及其主要衍生的转基因品系 BRS 245RR，施用和不施用草甘膦）和五种锌用量（0、5、10、20 和 40 mg kg - 1），四次重复。对结核干重 (NDW)、微生物生物量碳 (MBC) 和土壤化学属性进行了评估。草甘膦施用导致两种土壤类型之间的 MBC 差异，具有显着的栽培品种 × Zn 速率相互作用，而 NDW 揭示了 TH 下 Zn 用量和品种的影响，以及 UQ 下 Zn 用量的影响。除有效锌外，栽培品种和锌含量不影响任何土壤化学属性。Mehlich 1 和 DTPA-TEA 萃取剂可有效测定土壤中的有效锌。