| Autor: |
Oliveira GS; Department of Plant Protection, Rural Engineering and Soils, São Paulo State University, Av. Brasil n◦ 56, Ilha Solteira 15385-000, SP, Brazil., Jalal A; Department of Plant Protection, Rural Engineering and Soils, São Paulo State University, Av. Brasil n◦ 56, Ilha Solteira 15385-000, SP, Brazil., Prates AR; Department of Plant Protection, Rural Engineering and Soils, São Paulo State University, Av. Brasil n◦ 56, Ilha Solteira 15385-000, SP, Brazil., Teixeira Filho MCM; Department of Plant Protection, Rural Engineering and Soils, São Paulo State University, Av. Brasil n◦ 56, Ilha Solteira 15385-000, SP, Brazil., Alves RS; Department of Plant Protection, Rural Engineering and Soils, São Paulo State University, Av. Brasil n◦ 56, Ilha Solteira 15385-000, SP, Brazil., Silva LC; Department of Agricultural Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University, Via de Prof Access Paulo Donato Castellane, s/n, Jaboticabal 14884-900, SP, Brazil., Nascimento REND; Department of Agricultural Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University, Via de Prof Access Paulo Donato Castellane, s/n, Jaboticabal 14884-900, SP, Brazil., Silva PST; Department of Agricultural Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University, Via de Prof Access Paulo Donato Castellane, s/n, Jaboticabal 14884-900, SP, Brazil., Arf O; Department of Plant Technology, Food Technology and Partner Economics, São Paulo State University, Av. Brazil Sul n◦ 56, Ilha Solteira 15385-000, SP, Brazil., Galindo FS; School of Agricultural and Technological Sciences, Sao Paulo State University, Rod. Captain João Ribeiro de Barros km 651, Dracena 17900-000, SP, Brazil., Oliveira FC; Tera Ambiental Ltda., Estrada Municipal do Varjão n◦ 4.520, Jundiaí 13212-590, SP, Brazil., Abreu-Junior CH; Center for Nuclear Energy in Agriculture, University of Sao Paulo, Av. Centenário n◦ 303, Piracicaba 13416-000, SP, Brazil., Jani AD; Department of Biology and Chemistry, California State University, Monterey Bay, Seaside, CA 93955, USA., Capra GF; Dipartimento di Architettura, Design e Urbanistica, Università degli Studi di Sassari, Polo Bionaturalistico, Via Piandanna n◦ 4, 07100 Sassari, Italy.; Desertification Research Centre, Università degli Studi di Sassari, Viale Italia n◦ 39, 07100 Sassari, Italy., Nogueira TAR; Department of Plant Protection, Rural Engineering and Soils, São Paulo State University, Av. Brasil n◦ 56, Ilha Solteira 15385-000, SP, Brazil.; Department of Agricultural Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University, Via de Prof Access Paulo Donato Castellane, s/n, Jaboticabal 14884-900, SP, Brazil. |
| Abstrakt: |
Composted sewage sludge (CSS) is an organic fertilizer that can be used as a source of micronutrients in agriculture. However, there are few studies with CSS to supply micronutrients for the bean crop. We aimed to evaluate micronutrient concentrations in the soil and their effects on nutrition, extraction, export, and grain yield in response to CSS residual application. The experiment was carried out in the field at Selvíria-MS, Brazil. The common bean cv. BRS Estilo was cultivated in two agricultural years (2017/18 and 2018/19). The experiment was designed in randomized blocks with four replications. Six different treatments were compared: ( i ) four increasing CSS rates, i.e., CSS5.0 (5.0 t ha -1 of applied CSS, wet basis), CSS7.5, CSS10.0, CSS12.5; ( ii ) a conventional mineral fertilizer (CF); ( iii ) a control (CT) without CSS and CF application. The available levels of B, Cu, Fe, Mn, and Zn were evaluated in soil samples collected in the 0-0.2 and 0.2-0.4 m soil surface horizons. The concentration, extraction, and export of micronutrients in the leaf and productivity of common beans were evaluated. The concentration of Cu, Fe, and Mn ranged from medium to high in soil. The available levels of B and Zn in the soil increased with the residual rates of CSS, which were statistically not different from the treatments with CF. The nutritional status of the common bean remained adequate. The common bean showed a higher requirement for micronutrients in the second year. The leaf concentration of B and Zn increased in the CSS7.5 and CSS10.0 treatments. There was a greater extraction of micronutrients in the second year. Productivity was not influenced by the treatments; however, it was higher than the Brazilian national average. Micronutrients exported to grains varied between growing years but were not influenced by treatments. We conclude that CSS can be used as an alternative source of micronutrients for common beans grown in winter. |
