Title:	Influence of limestone and gypsum application on chemical attributes of dystrophic yellow latosol soil and corn yield in Eastern Amazon.
Authors:	COSTA, S. D. A. da BRASIL, E. C. SILVA JÚNIOR, M. L. da
Affiliation:	SIDNEY DANIEL ARAÚJO DA COSTA, UFRA EDILSON CARVALHO BRASIL, CPATU MÁRIO LOPES DA SILVA JÚNIOR, UFRA.
Date Issued:	2020
Citation:	Journal of Agricultural Studies, v. 8, n. 3, p. 363-383, 2020.
Description:	The objectiveof this study was to evaluate changes in the chemical attributes of the soil caused by the use of limestone associated or not to with gypsum in no-tillage system. The experiment was conducted on a dystrophic Yellow Latosol in Pará state,Brazil. The experimental design was in randomized blocks in split plots with three replications. The treatments consisted of five doses of limestone (0, 1, 2, 3 and 4 t ha-1), with and without gypsum (0, 0.5 and 1 t ha-1). Soil samples were collected at depths of 0-20 and 20-40 cm. There was a significant effect on the analyzed variables at both depths. The doses of 3.64 and 2.19 t ha-1of limestone associated with 0.5 t ha-1of gypsum, were responsible for the largest increase in soil calcium content in the 0-20 and 20-40 cm layers, respectively. The highest increase in Ca + Mg content was found at 3.63 t ha-1limestone combined with 0.5 t ha-1gypsum. It was observed that 3.13 t ha-1of limestone combined with 0.5 t of gypsum increased soil CEC. The 2.89 t ha-1dose of limestone combined with 0.5 t of gypsum contributed to the increase in base saturation (V%). The use of limestone and gypsum promotes soil chemical conditions, as reflected by increased corn yield when compared with control (no treatment) plots.
Thesagro:	Calcário Gesso Química do Solo Latossolo Amarelo Milho Zea Mays
NAL Thesaurus:	Limestone Plaster Soil chemistry Amazonia
DOI:	10.5296/jas.v8i3.16744
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATU)