Título:	Models to estimate potassium and nitrate in changes of ion concentration in soil solution in banana cultivation.
Autoria:	CAMPOS, M. S. COELHO, E. F. PEREIRA, B. L. da S. MELO, D. M. de SILVA, A. J. P. da SIMOES, W. L.
Afiliação:	MARCOS SOUZA CAMPOS, Federal University of Recôncavo da Bahia EUGENIO FERREIRA COELHO, CNPMF BRUNO LAÉCIO DA SILVA PEREIRA, Federal University of Recôncavo da Bahia DIEGO MAGALHÃES DE MELO, Federal University of Recôncavo da Bahia ALISSON JADAVI PEREIRA DA SILVA, Federal Institute of Education, Science and Technology from Bahia WELSON LIMA SIMOES, CPATSA.
Ano de publicação:	2020
Referência:	Engenharia na Agricultura, v. 28, p. 451-459, 2020.
Conteúdo:	The adequate fertigation use bases on the application of nutrients by water according to crop needs throughout its cycle. The evaluation of nutrients in the soil solution may be faster if based upon soil electric conductivity and moisture by using parametric models. The objective of this study was to evaluate the sensitivity of two parametric models for estimating nitrate and potassium concentration in the soil solution under changes of ion concentration during a crop cycle. One model was that from Vogeler et al. (1996) in which ion concentration is a function of soil moisture and electrical conductivity; the other was the potential in which the concentration is a function of the electrical conductivity of the soil solution. The potential model presented a better performance compared to that of adapted from Vogeler, as for estimation of ion concentrations as for the sensitivity of this model to changes in concentration of this ion in the soil solution. The models showed greater sensitivity when fitted to data corresponding to all possible occurrences in the soil during the crop cycle. The model should consider a range of concentrations with the possible values of the soil solution along crop cycle.
Thesagro:	Solo Fertirrigação Irrigação Localizada
NAL Thesaurus:	Irrigation Soil fertility Plant fertility
Palavras-chave:	Aplicação de nutrientes Ciclo da Cultura
Digital Object Identifier:	https://doi.org/10.13083/reveng.v29i1.8851
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATSA)