Data/hora: 26/04/2024 12:47:45

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	17/05/1999	
Data da última atualização: 	17/05/1999	
Autoria: 	NeSMITH, D. S.; HARGROVE, W. L.; TOLLNER, E. W.; RADELIFFE, D. E.	
Título: 	A comparison of three soil surface moisture and bulk density sampling techniques.	
Ano de publicação: 	1986	
Fonte/Imprenta: 	Transactions of the ASAE, v.29, n.5, p.1297-1299, 1986.	
Idioma: 	Inglês	
Conteúdo: 	The objective of this study was to compare a moisture - density gauge, a small core sampler, and a large core sampler for making soil surface moisture and density measurements.  This was conducted in an ongoing tillage study. The moisture - density gauge used was a Troxler model 3411-B. The small core sampler was a Uhland - type sampler with core dimensions of 5.4 cm diameter and 5.9 cm length, and the large core sampler was a custom-made device with core dimensions of 14.6 cm diameter and 10.1 cm length. Seventy-two observation were made by each method. For soil water measurement, all methods were well correlated, but the value obtained with the neutron probe was generally greater than either core method. Thus, the factory calibration does not appear adequate for all condition and calibration on site appears necessary. The gamma probe did not appear adequate for bulk density measurements of the upper 10 cm of the soil profile. In this study, the small core sampler was the more efficient method for measuring bulk density because of the higher correlation with the large core sampler and because of more convenient handling.  	
Palavras-Chave: 	Technologia.	
Thesagro: 	Solo.	
Thesaurus Nal: 	soil; technology.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (38977-1) - ADD - SP - -- - SP5148 -  - 5148 - DIS