Critical dilution curves for calcium, magnesium, and sulfur in potato (Solanum tuberosum L. Group Andigenum) cultivars Diacol Capiro and Pastusa Suprema

Q4 Agricultural and Biological Sciences

Agronomia Colombiana Pub Date : 2022-08-10 DOI:10.15446/agron.colomb.v40n2.98896

Kristal Castellanos Ruiz, M. I. Gómez Sánchez, Luis Ernesto Rodríguez Molano

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Abstract

Diagnostic tools must be developed to optimize the management of calcium (Ca), magnesium (Mg), and sulfur (S) in potato crops. This research aimed to develop the critical dilution curves for Ca, Mg, and S in potato (Solanum tuberosum L. Group Andigenum), establishing harvest indices and characterizing the nutrient relationships. Four field experiments were established in two growth cycles in the localities of Facatativá (high fertility soils) and Chocontá (low fertility soils) in Colombia. Two cultivars (Diacol Capiro and Pastusa Suprema) and two levels of fertilization (0 and 100% of macro and micronutrients) were evaluated. The dry biomass and Ca, Mg, and S concentration in tubers and aerial parts were measured from the formation of main stems until tuber maturation; this information was used to calculate the critical concentrations (Cac, Mgc, Sc), harvest indices, and nutrient correlations. The critical curves established were for Capiro: Cac = 1.7326W-0.2956, Mgc = 0.7191W-0.2803, Sc = 0.6461W-0.3904 and for Suprema: Cac = 1.523W-0.2559, Mgc = 0.6507W-0.236, Sc = 0.7669W-0.3932. Critical levels were established for five phenological stages. Capiro had a higher accumulation of Ca, Mg, and S in the tubers independently of locality, while Suprema had better performance in Chocontá. The accumulation of mineral nutrients in the tubers followed the order Ca

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马铃薯品种Diacol Capiro和Pastusa Suprema中钙、镁和硫的临界稀释曲线

必须开发诊断工具来优化马铃薯作物中钙(Ca)、镁(Mg)和硫(S)的管理。本研究旨在建立马铃薯(Solanum tuberosum L. Group Andigenum)中Ca、Mg、S的临界稀释曲线，建立收获指标，表征养分关系。在哥伦比亚facatativ(高肥力土壤)和chocont(低肥力土壤)的两个生长周期中建立了四个田间试验。以2个品种(Diacol Capiro和Pastusa Suprema)和2个施肥水平(宏量和微量元素含量分别为0和100%)进行评价。测定了从主茎形成至块茎成熟期间块茎和地上部位的干生物量和Ca、Mg、S浓度;该信息用于计算临界浓度(Cac、Mgc、Sc)、收获指数和养分相关性。建立的临界曲线为Capiro: Cac = 1.7326W-0.2956, Mgc = 0.7191W-0.2803, Sc = 0.6461W-0.3904, Suprema: Cac = 1.523W-0.2559, Mgc = 0.6507W-0.236, Sc = 0.76669 w -0.3932。确定了5个物候阶段的临界水平。Capiro在块茎中Ca、Mg和S的积累与产地无关，而Suprema在块茎中表现较好。块茎中矿质养分的积累顺序为Ca

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来源期刊

Agronomia Colombiana Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： Agronomia Colombiana journal it is intended to transfer research results in different areas of tropical agronomy. Original unpublished papers are therefore accepted in the following areas: physiology, crop nutrition and fertilization, genetics and plant breeding, entomology, phytopathology, integrated crop protection, agro ecology, weed science, environmental management, geomatics, biometry, soils, water and irrigation, agroclimatology and climate change, post-harvest and agricultural industrialization, food technology, rural and agricultural entrepreneurial development, agrarian economy, and agricultural marketing (Published: Quarterly).

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