Data/hora: 13/06/2024 05:25:33

Provedor de dados: 	70	
País: 	Brazil	
Título: 	LOW-COST AUTOMATION OF FERTIGATION WITH PROGRAMMABLE LOGIC CONTROLLER AND GAS-FILLED SENSORS	
Autores: 	Bezerra,Ricardo de S.; Evangelista,Adão W. P.; Vellame,Lucas M.; Alves Júnior,José; Casaroli,Derblai.	
Data: 	2017-04-01	
Ano: 	2017	
Palavras-chave: 	Water management; Microcontroller; Matrix potential.	
Resumo: 	ABSTRACT The aim of this study was to develop and evaluate a low-cost automation system for management of different fertigation regimes in tomato plants (Solanum lycopersicum L.) grown in a protected environment. The system consisted of an irrigation controller coupled to substrate moisture sensors and to a programmable logic controller (PLC). Four water regimes and nutrient supply levels were considered during evaluations. While developing, functional tests were performed to the automation system. Moreover, a cost-benefit analysis for the assembling of the system was carried out. As result, we noted that the automation system was efficient for controlling fertigation. It showed no problems regarding malfunction, still presenting a lower cost if compared to commercial controllers.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200394	
Editor: 	Associação Brasileira de Engenharia Agrícola	
Relação: 	10.1590/1809-4430-eng.agric.v37n2p394-402/2017	
Formato: 	text/html	
Fonte: 	Engenharia Agrícola  v.37 n.2 2017	
Fonte: 	info:eu-repo/semantics/openAccess