PARAMETERS OF OPERATIONAL PERFORMANCE OF SOIL PREPARATION AND SEMI-MECHANIZED TRANSPLANTATION OF COFFEE SEEDLING

Cunha, João P. B.; Silva, Fabio M. da; Andrade, Ednilton T.; Barros, Murilo M. de

doi:10.1590/1809-4430-Eng.Agric.v38n6p910-917/2018

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Scientific Paper, Agricultural Machinery Management • Eng. agríc. (Online) 38 (6) • Nov-Dec 2018 • https://doi.org/10.1590/1809-4430-Eng.Agric.v38n6p910-917/2018 copy

PARAMETERS OF OPERATIONAL PERFORMANCE OF SOIL PREPARATION AND SEMI-MECHANIZED TRANSPLANTATION OF COFFEE SEEDLING

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

In recent years, the coffee has undergone major changes, and in case of transplanting operation, the use of machinery has proved to be a viable alternative to producers. Prior knowledge of the influence of the variables that influence the operational capability of these machines can generate models to estimate precisely these parameters, thus enabling the optimization and management of mechanized operations. One of this tool is the use of the response surface methodology, which allows checking the influence of different independent variables and the response generated to allow a great value. This study aims to verify the use of the response surface method to determine parameters of mechanized operations in coffee plant implantation. The results show that the number of seedlings deposited increases with the increase in operating speed. In contrast, the adoption of higher speeds decreases the efficiency of the evaluated field operations. The response surface methodology was an important tool to check the effect of variables on performance parameters, and the generated models showed high significance allowing the identification of the effects of the operational speed and the average length of the cultivation line.

KEYWORDS
mechanization; planting seedlings; Coffea Arabica

Furrow preparation	a	b	c	_R2	p	SE	x²
EFc (ha h⁻¹)
1	0.00007^* * significant at 5% in the F test.	0.2187^* * significant at 5% in the F test.	0.0102^* * significant at 5% in the F test.	99.32	0.57	0.041	0.001
2	-1.414^ns ns not significant and	-0.274^* * significant at 5% in the F test.	0.535^* * significant at 5% in the F test.	92.07	2.61	0.025	0.002
FE (%)
1	0.0128^* * significant at 5% in the F test.	-3.782^* * significant at 5% in the F test.	64.92^* * significant at 5% in the F test.	74.03	0.49	0.751	0.561
2	-475.86^* * significant at 5% in the F test.	3.252^* * significant at 5% in the F test.	63.25^* * significant at 5% in the F test.	98.79	0.11	0.161	0.026
Td (h ha⁻¹)
1	-0.0012^* * significant at 5% in the F test.	-2.904^* * significant at 5% in the F test.	7.378^* * significant at 5% in the F test.	91.85	2.62	0.215	0.046
2	23.33^* * significant at 5% in the F test.	4.005^* * significant at 5% in the F test.	–	99.85	0.01	0.001	0.001

Transplanting	a	b	c	R²	p	SE	x²
EFc (pls h⁻¹)
1	7.197^* * significant at 5% in the F test.	796.01^* * significant at 5% in the F test.	-225.3^* * significant at 5% in the F test.	96.54	2.19	6.81	0.001
2	-43740.1^ns ns not significant and	-1552.9^* * significant at 5% in the F test.	3348.8^* * significant at 5% in the F test.	89.33	3.85	120.11	0.004
FE (%)
1	0.241^* * significant at 5% in the F test.	-12.48^* * significant at 5% in the F test.	74.48^* * significant at 5% in the F test.	97.94	0.84	1.22	0.001
2	-1636.7^* * significant at 5% in the F test.	17.66^* * significant at 5% in the F test.	83.19^* * significant at 5% in the F test.	97.02	1.05	1.46	0.002
Td (h ha⁻¹)
1	-0.0065^* * significant at 5% in the F test.	-1.193^* * significant at 5% in the F test.	4.88^* * significant at 5% in the F test.	80.12	5.76	0.25	0.062
2	43.86^* * significant at 5% in the F test.	2.631^* * significant at 5% in the F test.	–	99.25	0.001	0.001	0.002

Associação Brasileira de Engenharia Agrícola SBEA - Associação Brasileira de Engenharia Agrícola, Departamento de Engenharia e Ciências Exatas FCAV/UNESP, Prof. Paulo Donato Castellane, km 5, 14884.900 | Jaboticabal - SP, Tel./Fax: +55 16 3209 7619 - Jaboticabal - SP - Brazil
E-mail: revistasbea@sbea.org.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] *Corresponding author. Universidade Federal Rural do Rio de Janeiro/ Seropédica - RJ, Brasil. E-mail: bcunha_2@hotmail.com

Furrow preparation	EFc (ha h⁻¹)	FE (%)	Td (h ha⁻¹)
Length of line	0.410^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)	0.641^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)	-0.421^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)
Operational Speed	0.991^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)	-0.353^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)	-0.948^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)
Transplanting	EFc (pls h⁻¹)	FE (%)	Td (h ha⁻¹)
Length of line	0.467^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)	0.792^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)	-0.258^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)
Operational Speed	0.836^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)	-0.638^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)	-0.841^* * Coefficient of Pearson correlation at 5%, Effective field capacity (EFc), Field efficiency (FE), Time demanded (Td)