Straw management, nitrogen and potassium nutrition in sugar cane ratoon

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

Abstract

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. Management of harvest residue, nitrogen, potassium and use of inoculants in ratoon sugarcane. 2013. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.