Resumo

FANDOS, Carmina et al. Remote sensing and GIS for detection soybean/corn rotation frequencies. Rev. ind. agric. Tucumán [online]. 2019, vol.96, n.1, pp.07-16. ISSN 1851-3018.

Burruyacu is the department with the highest production of soybeans and corn in Tucumán province. Crop rotation is a fundamental practice to achieve sustainable productive systems through time. In this sense, the rotation with grasses, mainly corn, is fundamental since, among other benefits, it contributes to an improvement in the physical and chemical conditions of the soil that allow a better use of the humidity and favors the decrease of diseases, pests and weeds. This paper aimed to identify and quantify the soybean/corn rotation frequencies in the Burruyacu department, in the period between the growing seasons 2013/2014 to 2016/2017. A multitemporal analysis of categorized images obtained from satellite images was made, applying GIS methodologies. Different sequences of crops were identified that corresponded to three groups: plots with non-rotated soybean crops with corn, plots with non-intercropped corn crops with soybean, and plots with soybean/corn rotation. Sequences with soybean / corn rotation concentrated the highest percentage of surveyed area. The group of plots with soybeans without rotation with corn and the group of plots with unrotated corn with soybeans follow in descending order. In the group of sequences of soybean crops without rotation with corn, those that corresponded to soy in a single growing season predominated. In the grouping of sequences with soybean/corn rotation, the subgroup of sequences with one corn and three soybean growing season prevailed, followed by the subgroup composed of corn and soybean in two growing seasons each crop. In the latter subgroup, the sequences with soybeans and corn interspersed annually predominated.

Palavras-chave : remote perception; precision farming; agricultural practices.

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