Mapeamento do estande e distribuição longitudinal da cultura da soja

Abstract

The quality of soybean sowing is related to the distribution of the crop in the area, influencing the plant stand and, consequently, productivity and agricultural profitability and because of this need a precision agriculture. Thus, the objective was to map and evaluate the plant stand and the longitudinal distribution of the soybean crop with a pneumatic sowing . Data collection took place in a commercial area, 132 hectares, where 71 sampling points were allocated, and the collection at each point with three seeding line was used to evaluate the plant stand per meter and the percentage of normal, doubles. Data were analyzed by descriptive statistics, geostatistics and statistical quality control (CEQ). The plant stand and the longitudinal distribution of normal, faulted and double spacings for soybean presented spatial dependence. Stability occurs in the sowing process when determining the stand and the percentage of normal spacings, indicating quality in soybean sowing. There is a need for monitoring of the operation to identify sources of variability intrinsic to the process, in order to reduce the spacing and to improve the seeding quality.