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Straw management, nitrogen and potassium nutrition in sugar cane ratoon

Grant number: 09/15044-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): January 01, 2010
Effective date (End): July 31, 2012
Field of knowledge:Agronomical Sciences - Agronomy - Soil Science
Principal researcher:Godofredo Cesar Vitti
Grantee:Diego Wyllyam Do Vale
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil


The harvest of sugar cane, no straw removal by burning, is growing in Brazil. In this culture system, there are many questions about the management of stubble, and the quantities of nitrogen and potassium to be used. The various stubble management practices for conservation system can result in increased productivity, in addition, it is believed, it is possible to reduce the long term, nitrogen rates and short-term potassium to sugarcane sugar. The harvest without straw removal by fire in relation to harvested with fire, reduces the cost of crop production. Given this context, the objective is to evaluate the management of stubble of cane sugar, potassium and nitrogen nutrition in a commercial stump harvested green (without burning). This will be an experiment in Piracicaba - SP. The treatments are arranged in a randomized block design in factorial 3x5x4, three stubble management practices (removal of straw only on lines of cane sugar, ridged straw every other row and distribution of the straw in each area) five N rates (applied 0, 60, 120 and 180 kg ha-1 N and further treatment with the application in line with the sugar solution containing Gluconacetobacter diazotrophicus strain BR 1128), four doses of K2O (0, 50, 100 and 150 kg K2O ha-1), and four repetitions, totaling 240 plots. The variables analyzed over the past two knuckles are: chemical analysis of soil, analysis of the volatilization of NH3-N, leaf analysis, biological assessments and technological production of stalks and straw evaluation.

Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
VALE, Diego Wyllyam Do. Manejo da palha, adubação nitrogenada potássica e uso de inoculante em soca de cana-de-açúcar. 2013. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz Piracicaba.

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