Data/hora: 08/06/2024 06:30:29

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 04/05/2001
Data da última atualização: | 25/02/2019
Autoria: | CRUVINEL, P. E.
Afiliação: | PAULO ESTEVAO CRUVINEL, CNPDIA.
Título: | Low-cost microprocessed instrument for evaluating soil temperature profile.
Ano de publicação: | 2000
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 11, p. 2269-75, nov. 2000.
Idioma: | Inglês
Notas: | Título em português: Instrumento microprocessado de baixo custo para avaliação de temperatura em perfil de solo.
Conteúdo: | This paper describes a low-cost microprocessed instrument for in situ evaluating soil temperature profile ranging from -20.0°C to 99.9°C, and recording soil temperature data at eight depths from 2 to 128 cm. Of great importance in agriculture, soil emperature affects plant growth directly, and nutrient uptake as well as indirectly in soil water and gas flow, soil structure and nutrient availability. The developed instrument has potential applications in the soil science, when temperature monitoring is required. Results show that the instrument with its individual sensors guarantees ±0.25°C accuracy and 0.1°C resolution, making possible localized management changes within decision support systems. The instrument, based on complementary metal oxide semiconductor devices as well as thermocouples, operates in either automatic or non-automatic mode.
Palavras-Chave: | Equipamento para manejo do solo; Microprocessador; Propriedade térmica; Sensor; Sensors; Soil management equipment; Soils.
Thesagro: | Solo.
Thesaurus Nal: | Microprocessors; Thermal properties.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/18869/1/pab98_156.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (18869-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS