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Interrelashionship between soil, production, borer stalk and rust severity and silicon absorption by sugarcane at São Paulo State

Abstract

The Brazil is the biggest international productor of sugarcane and Sao Paulo State is most expressive in extension and productivity. Sugarcane presents the highest contents of silicon, which is a beneficial element to increase the productivity, reduction of insects damages, diseases and drawn tolerance. The silicon availability is variable, specialy in function of soil type. The expansion of sugarcane at last years, high intemperizated soils and sand soils are being used. They could contain low contents of silicon. Besides, there is few informations about silicon availability in soils with planting of sugarcane for many years and silicate fertilization to sugarcane in Brazil. The objective will be evaluation of silicon extraction by sugarcane in soils with rates of silicate and its relashionship with its productivity, technology quality, borer stalk damage and ringspot severity. The first experiment (march/2007 to august/2008) will carry out in randomized complete blocks with 4 replications and 3 soils (sandy, silt loam and clay soils) and 4 rates of Si (0, 250, 500 e 750 kg ha-1 Si). The second part of this study (march/april/2008 to july/august/2009) will be done in randomized complete blocks with 2 soils with low silicon content and rates of Si (0, 250, 500 e 750 kg ha-1 Si), 2 varieties (IAC 87 3396; SP 89 1115). After harvest of sugarcane plots, will be done chemical analysis for soil fertility and Si content in soils by 2 extractants (acetic acid 0.5 Mol L-1 and CaCl2 0.01 mol L-1) and evaluation of productivity, tecnologycal quality, damage of borer stalk and ringspot incidence and silicon contents of top visible dewlap leaves and stems and leaves at harvest. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CAMARGO, MONICA SARTORI; KEEPING, MALCOLM G.. Silicon in Sugarcane: Availability in Soil, Fertilization, and Uptake. SILICON, . (13/04144-7, 06/06288-2, 08/10795-2, 18/05843-0)
CAMARGO, MONICA SARTORI; KEEPING, MALCOLM G.. Silicon in Sugarcane: Availability in Soil, Fertilization, and Uptake. SILICON, v. 13, n. 10, p. 3691-3701, . (06/06288-2, 08/10795-2, 18/05843-0, 13/04144-7)
CAMARGO, MONICA SARTORI; ROCHA, GABRIELA; BALTIERI, GUSTAVO JONAS. Silicate Fertilization in Sugarcane: Silicon Availability, Uptake, and Recovery Index Over Two Consecutive Cycles. JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION, v. 21, n. 3, . (08/10795-2, 18/05843-0, 06/06288-2)

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