Physical attributes of soil in candle culture under differentiated management
DOI:
https://doi.org/10.6008/CBPC2179-6858.2021.002.0006Keywords:
Family farming, Multivariate statistics, Physical properties of soilAbstract
In Para, mandioculture activity exerts a strong socioeconomic and food influence for many families. However, it is known that the yield per hectare in the state is still less than expected, since one of the limiting factors of productivity are the forms of management, which can cause good or bad changes in soil structure due to the complexity and interaction between its physical, chemical and biological. Following this reasoning this work aimed to demonstrate the interactions physical attributes of soil in the cassava crop under different management using multivariate statistical techniques. The study was carried out in an experimental area located in the community of Boa Esperança, Santarém-Pará, with dimensions of 75 x 32 m, with different management systems in 36 plots, where deformed samples were collected at 0-20 cm depth and undifferentiated samples of 0-5 and 15-20 cm per plot. The physical attributes were: granulometry, soil density, particle density and total porosity. The classification of the accessions into groups was made by two methods: descriptive analysis and analysis of main components in which the formation of groups was identified only in the treatments with manual weeding and control of the experiment. The control treatment showed the decrease of soil density, but in this same management the increase of soil density with the addition of calcareous was observed. The treatment with manual weeding plus addition of calcareous showed low values of soil density and of clay.
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