Título:	Delineating management zones with different yield potentials in soybean-corn and soybean-cotton production systems.
Autoria:	SPERANZA, E. A. NAIME, J. de M. VAZ, C. M. P. FRANCHINI, J. C. INAMASU, R. Y. LOPES, I. de O. N. QUEIROS, L. R. RABELLO, L. M. JORGE, L. A. de C. CHAGAS, S. das SCHELP, M. X. VECCHI, L.
Afiliação:	EDUARDO ANTONIO SPERANZA, CNPTIA; JOAO DE MENDONCA NAIME, CNPDIA; CARLOS MANOEL PEDRO VAZ, CNPDIA; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO; RICARDO YASSUSHI INAMASU, CNPDIA; IVANI DE OLIVEIRA NEGRAO LOPES, CNPSO; LEONARDO RIBEIRO QUEIROS, CNPTIA; LADISLAU MARCELINO RABELLO, CNPDIA; LUCIO ANDRE DE CASTRO JORGE, CNPDIA; SERGIO DAS CHAGAS, GRUPO AMAGGI; MATHIAS XAVIER SCHELP, ROBERT BOSCH LIMITADA; LEONARDO VECCHI, ROBERT BOSCH LIMITADA.
Ano de publicação:	2023
Referência:	AgriEngineering, v. 5, n. 3, p. 1481-1497, Sept. 2023.
Conteúdo:	Abstract: The delineation of management zones is one of the ways to enable the spatially differentiated management of plots using precision agriculture tools. Over the years, the spatial variability of data collected from soil and plant sampling started to be replaced by data collected by proximal and orbital sensors. As a result, the variety and volume of data have increased considerably, making it necessary to use advanced computational tools, such as machine learning, for data analysis and decision-making support. This paper presents a methodology used to establish management zones (MZ) in precision agriculture by analyzing data obtained from soil sampling, proximal sensors and orbital sensors, in experiments carried out in four plots featuring soybean-cotton and soybean-corn crops, in Mato Grosso and Paraná states, Brazil. Four procedures were evaluated, using different input data sets for the MZ delineation: (I) soil attributes, including clay content, apparent electrical conductivity or fertility, along with elevation, yield maps and vegetation indices (VIs) captured during the peak crop biomass period; (II) soil attributes in conjunction with VIs demonstrating strong correlations; (III) solely VIs exhibiting robust correlation with soil attributes and yield; (IV) VIs selected via random forests to identify the importance of the variable for estimating yield. The results showed that the VIs derived from satellite images could effectively replace other types of data. For plots where the natural spatial variability can be easily identified, all procedures favor obtaining MZ maps that allow reductions of 40% to 70% in yield variance, justifying their use. On the other hand, in plots with low natural spatial variability and that do not have reliable yield maps, different data sets used as input do not help in obtaining feasible MZ maps. For areas where anthropogenic activities with spatially differentiated treatment are already present, the exclusive use of VIs for the delineation of MZs must be carried out with reservations.
Thesagro:	Agricultura de Precisão Soja Milho Algodão
NAL Thesaurus:	Precision agriculture
Palavras-chave:	Aprendizado de máquina Variabilidade espacial Machine learning Spatial variability Management Zones
Digital Object Identifier:	https://doi.org/10.3390/agriengineering5030092
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPTIA)