EVALUATION OF ALTERNATIVE AGROMETEOROLOGICAL INSTRUMENTS FOR MONITORING POULTRY SHED ENVIRONMENT

• Autor(a) principal: Camerini, Nerandi Luiz
• Data de Publicação: 2011
• Outros Autores: Mendonça Motta, Jeane Karla, Mendes, Luciano Barretos, Nascimento, José Wallace Barbosa, Furtado, Dermeval Araujo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Engenharia na Agricultura
• Texto Completo: https://periodicos.ufv.br/reveng/article/view/172
• topic: avicultura; bioclimatologia; temperatura do globo negro e umidade relativa do ar

Laboratory experiments were conducted to evaluate the efficiency of low-cost alternative instruments for measuring agrometeorological data and compare them with the standard instruments of higher cost. In the first experiment two types of alternative black-bulb thermometers were compared with a standard black-bulb copper thermometer. The second experiment was designed to compare a commercial temperature and relative humidity (HOBO) sensor with an alternative psicrometer, made from a psicrometer of visual reading adapted by adding HOBO temperature sensors. The alternative instruments were evaluated for precision, through the R2 value and also for accuracy assessed by comparing angular (a) and linear (b) coefficients of the regression equations with the standard values. All alternative instruments showed good precision (R2 = 0.90 to 0.94 for both types of thermometers and R2 = 0.8 for psicrometer); and satisfactory accuracy. It was concluded that these instruments can be used in agrometeorological studies, and thus reduce research costs.