Data/hora: 17/06/2024 01:24:20

Biblioteca(s): | Embrapa Clima Temperado; Embrapa Unidades Centrais.
Data corrente: | 04/03/2024
Data da última atualização: | 04/03/2024
Autoria: | BAMBERG, A. L.; MARTINAZZO, R.; SILVEIRA, C. A. P.; PILLON, C. N.; STUMPF, L.; BERGMANN, M.; VAN STRAATEN, P.; MARTINS, E. de S.
Afiliação: | ADILSON LUIS BAMBERG, CPACT; ROSANE MARTINAZZO, CPACT; CARLOS AUGUSTO POSSER SILVEIRA, CPACT; CLENIO NAILTO PILLON, DEPI; L. STUMPF, UNIVERSIDADE FEDERAL DE PELOTAS; M. BERGMANN, COMPANHIA DE PESQUISA DE RECURSOS MINERAIS; P. VAN STRAATEN, UNIVERSITY OF GUELPH; EDER DE SOUZA MARTINS, CPAC.
Título: | Selected rock powders as sources of nutrients for soil fertilization and maize-wheat grain production in southern Brazil.
Ano de publicação: | 2023
Fonte/Imprenta: | The Journal of Agricultural Science, v. 161, n. 5, p. 654-668, Oct. 2023.
ISSN: | 1469-5146
DOI: | https://doi.org/10.1017/S002185962300062X
Idioma: | Inglês
Conteúdo: | The current study evaluated alternative sources of nutrients to improve the soil fertility status and yield of maize-wheat succession in Southern Brazil. The treatments were: T1: no fertilization; T2: liming with dolomitic marble; T3: alternative liming (AL) with limestone interbedded with shale; T4: AL + 50% P - with Arad natural phosphate (P-ANP) + 50% P – triple superphosphate (P-TSP); T5: AL + 100% P-ANP; T6: AL + 100% P-ANP + 100% K-rich monzogranite; T7: AL + 100% P-ANP + 100% N (50% N from tung pressed cake (N-TPC) + 50% N-urea); T8: AL + 100% P-ANP + 100% K-rich monzogranite + 100% N (50% N-TPC + 50% N-Urea) + 100% S; T9: AL + regional average rate of NPK (5-20-20) formulation. Except for T7 and T8, all treatments received the full recommended rate of N through Urea. Immediate and residual effects were evaluated over 2.5 years (90, 360 and 900 days) on soil fertility and maize - wheat yield. The limestone interbedded with shale released Ca, Mg and corrected soil acidity similarly to dolomitic marble. The fertilization strategies used in T4, T7 and T8 presented the highest cumulative productivities while T3 (U$ = 1223), T9 (U$ = 1174) and T4 (U$ = 1122) resulted in higher profits than the other evaluated fertilization strategies. The limestone interbedded with shale (T3), alone or combined with 50% of P-ANP + 50% of P – TSP (T4) provided the best economical and technical results, highlighting the potential of selected alternative regional sources for soil fertility improvement and plant-nutrients supply.
Palavras-Chave: | Agrominerais.
Thesagro: | Adubação; Calagem; Calcário; Fertilidade do Solo; Fertilizante; Milho; Nutriente; Trigo; Xisto.
Thesaurus Nal: | Liming; Mineral fertilizers; Nutrient availability; Nutrients; Soil fertility; Soil nutrients.
Categoria do assunto: | --
Registro original: | Embrapa Clima Temperado (CPACT)

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