Data/hora: 16/06/2024 08:49:25

Provedor de dados: 	22	
País: 	Brazil	
Título: 	Management units in precision agriculture system in the soybean crop

Unidades de manejo em sistema de agricultura de precisão na cultura da soja	
Autores: 	Rampim, L.; Lana, M. C.; Feiden, A.; Klein, J.; Sarto, M. V.M.; Rosset, J. S.; Dal Molin, P. V.	
Data: 	2013-03-26	
Ano: 	2013	
Palavras-chave: 	Geoprocessamento; Variabilidade espacial; Fertilidade do solo; Amostragem do solo; Geoestatística.	
Resumo: 	There has been an increasing use of soil sampling grids for basing the recommendation of lime and fertilizers in a precision agriculture system in the west of Paraná, despising the undulating topography. Thus, this  study  aimed  to  evaluate  the variability of soil fertility and the soybean                                Trabalho selecionado durante a VI Semana de     Ciências Agrárias (VI SECIAGRA), realizada de 01 a 03/10/2012                    yield on a farm in the west of Paraná which uses no-till system, previously divided into management units in a precision farming system. The experiment was conducted in eutroferric Oxisol characterized by being extremely loamy, in a property of 17.80 ha in Guaíra (Paraná, Brazil) cropped with soybeans in the 2010/11 season. The mapping of the property was done by collecting geographical coordinates at key points through GPS, and soil samples were collected in eight management units defined by agronomic knowledge of the property. Subsequently, the variables pH CaCl2, Al+3, H+Al, Ca+2, Mg+2, K+, P, P-rem, C, Cu, Zn, Fe, Mn, SB, effective CTC, CTC, V% , Ca/Mg, Ca/K, Mg/K, (Ca+Mg)2/K and K/raiz2(Ca+Mg) were used to establish the dissimilarity matrix and build the map of the property arranging the most similar management units together.  The productivity of the eight management units were also evaluated by using four replications in a completely randomized design, totaling 32 sampling units. The definition of management units by using agronomic knowledge and the regional edaphoclimatic conditions enable to capture the variability of soil fertility. There was the formation of four groups of management based on dissimilarity: group I (management units 1 and 2), group II (3 and 4), group III (5 and 8) and group IV (6 and 7). No difference in soybean yields was observed in the eight management units.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Português	
Identificador: 	http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/7872

10.1818/sap.v11i0.7872	
Editor: 	Scientia Agraria Paranaensis	
Relação: 	http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/7872/5828	
Formato: 	application/pdf	
Fonte: 	Scientia Agraria Paranaensis; Vol. 11, suplemento, 2012; 70-83

1983-1471