Development and validation of hydraulic driven electronic penetrometer for georeferenced point collection

Parize, Camila W. L.; Silva, Thiago X. da; Kmiecik, Leonardo L.; Parize, Guilherme L.; Oiole, Yasser A.; Jasper, Samir P.

doi:10.1590/1807-1929/agriambi.v24n7p497-502

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Articles • Rev. bras. eng. agríc. ambient. 24 (7) • July 2020 • https://doi.org/10.1590/1807-1929/agriambi.v24n7p497-502 copy

Development and validation of hydraulic driven electronic penetrometer for georeferenced point collection

Desenvolvimento e validação de penetrômetro eletrônico com acionamento hidráulico para coleta de pontos georreferenciados

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Soil penetration resistance (SPR) is used as an indicator of compaction, as it is related to important soil and plant attributes and is an easily obtainable measure. Its determination with the use of the penetrometer guides to the best soil management strategies, thus favoring crop development. The objective of this study was to develop and validate the georeferenced hydraulic driven electronic penetrometer, making it easier to obtain SPR. For this, 36 SPR readings from 0 to 0.60 m depth were performed with the manual and hydraulic penetrometers in two areas. The SPR results were analyzed by establishing the confidence intervals by the t-test (p ≤ 0.10) at each 0.05 m depth and the georeferencing was analyzed through the root mean square error (RMSE). It was found that both penetrometers showed similarity in SPR measurement and in the georeferencing of the points.

Key words:
soil management; soil penetration resistance; compaction

Area	Depth (m)	Clay	Silt	Sand
Area	Depth (m)	(g kg^-1)
A	0-0.10	663	87	250
	0.10-0.20	668	100	212
	0.20-0.30	668	74	238
	0.30-0.40	668	100	212
	0.40-0.50	672	93	235
	0.50-0.60	691	89	220
B	0-0.10	525	115	360
	0.10-0.20	535	80	385
	0.20-0.30	525	85	390
	0.30-0.40	570	65	365
	0.40-0.50	555	75	370
	0.50-0.60	560	60	380

Site	Depth (m)	Density (g cm³)	Water content (cm³ cm^-3)
Area A	0-0.10	1.28 ± 0.06	0.34 ± 0.02
	0.10-0.20	1.16 ± 0.16	0.35 ± 0.05
	0.20-0.30	1.13 ± 0.18	0.39 ± 0.03
	0.30-0.40	1.13 ± 0.12	0.40 ± 0.05
	0.40-0.50	1.13 ± 0.18	0.40 ± 0.09
	0.50-0.60	0.98 ± 0.06	0.44 ± 0.02
Area B	0-0.10	1.24 ± 0.01	0.30 ± 0.01
	0.10-0.20	1.29 ± 0.02	0.34 ± 0.02
	0.20-0.30	1.09 ± 0.01	0.37 ± 0.01
	0.30-0.40	1.05 ± 0.02	0.37 ± 0.01
	0.40-0.50	1.03 ± 0.11	0.39 ± 0.03
	0.50-0.60	1.02 ± 0.11	0.40 ± 0.04

Site	RMSE (m)
Site	Longitudinal	Transverse
Area A	0.87	1.96
Area B	3.16	1.97

Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Campina Grande, PB, Brasil, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
E-mail: revistagriambi@gmail.com

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[1] Camila W. L. Parize - E-mail: camillawlag@hotmail.com (Corresponding author)