Sistema integrado de diagnose e recomendação na cultura da cana-de-açúcar orgânica em Goianésia, Goiás
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2012-03-23
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Universidade Federal de Goiás
Resumo
Organic agriculture is gaining ground and has been the subject of extensive
discussions in different places on the planet. Given the interest and the prospect of growth
in this market, Brazil is developing an infrastructure, which will allow to compete in this
industry so dynamic leadership of the global market. Brazil is currently the largest
producer of organic sugar. The state of Goiás has two large companies of expression in the
production of organic sugar, including Jalles Machado S.A., where this research was
developed. Knowing the uniqueness of a different fertilizer management for plantations
under organic cultivation, there is a need to seek better understanding of the nutritional
dynamics of the culture of sugarcane when it makes use of a fertilizer based on
agroecological principles. Facing this new situation of advancement of this sector
synergistically associated with organic agriculture, this research aimed to establish the
Diagnosis and Recommendation Integrated System (DRIS) to the culture of organic
sugarcane to establish criteria for the regional culture, making the programs more efficient
fertilization. Samples were collected from soil and leaves in organic plantations, in two
consecutive crop years 2009/2010 and 2010/2011. Both years collections totaled 192
samples being 112 points in the areas of plant-cane and 80 points in areas of ratoon-cane.
The present observations was tabbed a database. The database was analyzed from two
aspects, the traditional methods of Critical Levels and Ranges Sufficiency, and also by the
methodology of the DRIS. It can be concluded that the cultivation of organic sugarcane,
despite having featured in the Cerrado region, research is lacking to establish regional
criteria fertilization. Differences were observed between the responses of fertilization
cycles plant-cane and ratoon-cane for Goianésia, Goiás and research in the area of fertility
and fertilization of the Cerrado soils can bring greater gains to the culture of organic
sugarcane, either by increased production, by optimizing the use of organic inputs and the
preservation of natural resources.
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GONÇALVES, Helenice Moura. Sistema integrado de diagnose e recomendação na cultura da cana-de-açúcar orgânica em Goianésia, Goiás. 2012. 117 f. Tese (Doutorado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2012.