Full text
| |
| Author(s): |
Carlos Francisco Ragassi
Total Authors: 1
|
| Document type: | Master's Dissertation |
| Press: | Piracicaba. |
| Institution: | Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) |
| Defense date: | 2009-07-31 |
| Examining board members: |
José Laercio Favarin;
Carlos Alberto Lopes;
Paulo Cesar Tavares de Melo
|
| Advisor: | José Laercio Favarin |
| Abstract | |
Potato crop migrates continually in Brazil, due to the high incidence of soil diseases where potato is cultivated every year after a maize (Zea mays) crop cycle and when chisel plough, which causes sub-superficial compaction, is used for soil management. This work evaluated a soil deep tillage system associated to three different grasses, Panicum maximum cv. Tanzânia, Brachiaria brizantha cv. Marandu and maize Dekalb 191 in order to improve soil physical conditions and to reduce potato soil diseases incidence. The soil deep tillage system improved soil physical conditions and, although the evaluated grasses presented different characteristics of root and shoot production, the grass specie did not influence the evaluated soil parameters and potato productivity after two years of research. The soil physical improvement promoted higher potato yield and quality in the soil deep tillage system but did not influence diseases incidence and other damages to the tubers, assessed after harvesting. The average disease incidence was low, which meant a longer term work was necessary to show if the soil deep tillage system associated to grasses would avoid the Brazilian potato crop migration. (AU) | |
| FAPESP's process: | 07/05562-6 - Crop rotation aiming to improve soil conditions for potato production (Solanum tuberosum L.) |
| Grantee: | Carlos Francisco Ragassi |
| Support Opportunities: | Scholarships in Brazil - Master |