| Grant number: | 18/07294-3 |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| Start date: | June 01, 2018 |
| End date: | May 31, 2021 |
| Field of knowledge: | Agronomical Sciences - Forestry Resources and Forestry Engineering - Forestry |
| Principal Investigator: | José Leonardo de Moraes Gonçalves |
| Grantee: | Liamara Santos Masullo |
| Host Institution: | Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil |
Abstract The reduction of profitability in the Brazilian forest industry is a challenge to ensure competitiveness of the sector in the international market. Between 2003 and 2013, pulpwood production costs increased 93%, requiring technological improvement in the use of agricultural inputs, water and energy. The use of forest residues as an alternative energy source has increased, compromising the sustainability of forest soils. In 2016, the residues in the forestry activity amounted to roughly 30 million tons, comprising leaves, branches, bark and litter. Since 1980's, maintenance of residues in the field is defended, as they favor chemical, biological and physical quality of soils and reduce nutrients exportation with harvest. Nutrition with micronutrients is poorly understood in eucalyptus plantations and the application of fertilizers is carried out empirically and preventively, which reduces efficiency. This study aims to evaluate the effects of removal and maintenance of forest residues associated with omission and application of B, Cu and Zn on these nutrient dynamics in the soil-plant system in eucalyptus plantations. For that purpose, two trials will be conducted, the first in the field at the Experimental Station of Forestry Sciences of Itatinga (ESALQ/USP) and the second in a greenhouse at the Center for Nuclear Energy in Agriculture of the University of São Paulo (CENA/USP). The results will be used to understand the main functions of B, Cu and Zn in eucalyptus plantations, as well as clarify aspects related the effectiveness of micronutrient fertilization and the importance of keeping forest residues on the soil. (AU) | |
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