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Phosphorus nutrition in plant cane cultivated in different soils system conservationists the State of São Paulo


To increase the efficiency of phosphate fertilizer in crops of sugar cane, has been employing an indication of organic carrier such as filter cake, by decreasing the adsorption of P in the soil and increase soil microbial mass. From the year 2000, there was little interest for the use of filter cake on sugar cane due to rising fertilizer costs and the environmental factor, which require sustainable production systems. Currently, the environmental aspect is one of the most significant motivations for ethanol production because the world has interest in ethanol, provided that the aggregate social and environmental values in production. Given this context, the objective is to evaluate the effect of phosphorus sources with or without filter cake in different soils on sugar cane plant cultivated in conservation system. For that, installed a network of experiments on different soils of São Paulo. The treatments will be in twenty factorial 3x3x2 +2, where consisted of three doses of P2O5 (90, 180 and 360 kg ha-1), 3 sources of phosphorus, triple superphosphate and reactive phosphate rock and phosphate in the presence of pie (10 t ha-1) and absence of pie and two witnesses (not just another match and pie), arranged in a randomized block design with four replications. Will be evaluated the phosphorus content in soil, plant and biological variables of growth and yield and quality of the stems. In addition, a study will be added in the laboratory with the pie with and without inoculation with microorganisms, and could affect the efficiency of organic-mineral fertilizer in the release of soluble phosphorus in soil from different sources over time. (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)
FRAZAO, JOAQUIM JOSE; PRADO, RENATO DE MELLO; DE SOUZA JUNIOR, JONAS PEREIRA; ROSSATTO, DAVI RODRIGO. Silicon changes C:N:P stoichiometry of sugarcane and its consequences for photosynthesis, biomass partitioning and plant growth. SCIENTIFIC REPORTS, v. 10, n. 1, . (10/17893-0, 11/12810-1)

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