Identification of Modern High-Yield Soybean Genotypes for Potassium-Use Efficiency in Sandy Soil of the Brazilian Cerrado
Author:
Gomides João Flávio Floriano Borges1, Leite Michele dos Santos2, Steiner Fábio12ORCID, Zuffo Alan Mario3ORCID, Aguilera Jorge González1ORCID, Ratke Rafael Felippe4ORCID, Gonzales Herry Lloclla5, García Wilmer Enrique Vidaurre5, López Luis Miguel Serquen5, Aranibar Carlos Gerano Morales6, Gutiérrez Nataniel Linares6, Morales-Aranibar Luis Fortunato7ORCID
Affiliation:
1. Department of Agronomy, State University of Mato Grosso do Sul (UEMS), Cassilândia 79540-000, Brazil 2. Department of Crop Science, State University of Mato Grosso do Sul (UEMS), Aquidauana 79200-000, Brazil 3. Department of Agronomy, State University of Maranhão (UEMA), Balsas 65800-000, Brazil 4. Department of Agronomy, Federal University of Mato Grosso do Sul (UFMS), Chapadão do Sul 79560-000, Brazil 5. Scientific Research Office, César Vallejo University, Chiclayo 14001, Peru 6. Department of Metallurgical and Materials Engineering, Jorge Basadre Grohmann National University, Tacna 23001, Peru 7. Research Institutes Office, National Intercultural University of Quillabamba, Cusco 08741, Peru
Abstract
Soybean is the main leguminous crop in Brazil, mostly grown in tropical soils with low potassium (K) availability. Therefore, the identification of new genotypes with efficient K uptake and utilization in environments with low exchangeable K content is an economically viable alternative to maximize crop yield in Brazil. A study was conducted to investigate the response of 25 modern high-yield soybean genotypes for K-use efficiency in a sandy tropical soil of the Brazilian Cerrado. Treatments were distributed in a completely randomized design in a 2 × 25 factorial scheme: two levels of K fertilization [20 mg K dm−3 (low level) or 200 mg K dm−3 (high level)] and 25 soybean genotypes with three replicates. Plant morphological traits, leaf K, and crop production components were measured. Based on grain production data, K-use efficiency (KUE) and response efficiency (RE) to K fertilization were calculated. Leaf area, shoot dry matter, pod number per plant, 1000-grain weight, and grain yield were the crop characteristics most limited by low soil K availability. The soybean genotypes “TMG7061 IPRO”, “BMX Bônus IPRO”, “RK6719 IPRO”, and “RK8317 IPRO” were classified as efficient in the use of soil K and are the most suitable genotypes to be cultivated in agricultural soils with low K availability. The genotypes “98R35 IPRO”, “HO Maracaí IPRO”, “BMX Bônus IPRO”, and “RK7518 IPRO” were classified as responsive to K fertilization and are the most recommended genotypes for cultivation in agricultural areas with the application of high K fertilizer rates. The genotype “BMX Bônus IPRO” simultaneously combines characteristics of K-use efficiency and response to K fertilization and hence can be grown in both K-deficient and optimal soils.
Subject
Agronomy and Crop Science
Reference38 articles.
1. Cerrado: Agricultural production and areas designated for environmental preservation registered in the Brazilian rural environmental registry (Cadastro Ambiental Rural);Vilela;J. Environ. Sci. Eng. B,2020 2. Management of soil acidity of south american soils for sustainable crop production;Fageria;Adv. Agron.,2014 3. Santos, H.G., Jacomine, P.K.T., Anjos, L.H.C., Oliveira, V.A., Lumbreras, J.F., Coelho, M.R., Almeida, J.A., Araujo Filho, J.C., Oliveira, J.B., and Cunha, T.J.F. (2018). Sistema Brasileiro de Classificação de Solos, EMBRAPA. [5th ed.]. 4. Natural fertility and intrinsic fragility of soils in the Brazilian Cerrado;Cassol;Rev. Agronegócio Meio Ambiente,2023 5. Gomes, L., Simões, S.J.C., Dalla Nora, E.L., de Sousa-Neto, E.R., Forti, M.C., and Ometto, J.P.H.B. (2019). Agricultural expansion in the Brazilian Cerrado: Increased soil and nutrient losses and decreased agricultural productivity. Land, 8.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|