Cultivo de milho verde em sucessão ao arroz no Vale do Ribeira, SP: subsídios para adoção de zonas de manejo

• Autor(a) principal: Akune, Vanessa Satiko da Cunha [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/126571; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/23-07-2015/000843142.pdf
• topic: Mecanização agrícola; Solos - Manejo; Milho - Cultivo; Farm mechanization

The knowledge of the spatial variability of agronomic traits of culture and soil fertility in cultivated areas provides important information to rationalize the application of lime and fertilizers in the soil, helping to reduce the environmental impacts and production costs. This study aimed to determine the variability of the production of green maize in winter and soil fertility in commercial agriculture, in order to identify and delineate management zones for individualized treatment. The experiment was carried out and conducted in Kassuga Farm, located in the Registro- SP, in the harvest of 2013/2014. The sampling grid consisted of 68 points georreferencidos sampling, spread over an area of 4.97 ha. The planting of conventional hybrid corn was conducted in tillage, in succession to the rice harvest in winter, the harvest was performed in corn condition. The characteristics were; plant height, length, diameter, and productivity of unhusked and husked ear, grain yield and soil properties. The data were submitted to exploratory analysis to verify the degree of normality and the measure of correlation between soil attributes, corn productivity and percentage of coverage. The data showed that non-normal distribution were submitted to geostatistical analysis to quantify the degree of spatial dependence and prepare the spatial variability maps. The results showed no significant correlation productivity of corn on the cob with soil chemical properties; however, there were several interactions between the elements of fertility and soil texture. The spatial dependence of soil attributes queen spatial variations shows need to be. Considered in selecting the driving technique of the culture, conventional agriculture or precision. The chemical attributes MO, K and P showed spatial variability in the area, providing support for the establishment of different management zones, targeting the ...