Fertilidade do solo sob plantio direto com uso de plantas de cobertura
No-tillage system emerged in the 1970s and is currently considered a soil conservation method because of its benefits generated by it, and with the use of soil cover plants its effects are improved due to changes in soil fertility It involves the ability of soil to produce nutrients for plants. The...
| Autor principal: | Piske, Dionata Ricardo |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/10736 |
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| Resumo: |
No-tillage system emerged in the 1970s and is currently considered a soil conservation method because of its benefits generated by it, and with the use of soil cover plants its effects are improved due to changes in soil fertility It involves the ability of soil to produce nutrients for plants. The objective of this work is to evaluate soil fertility parameters in no - tillage system with the use of soil cover plants. The work was elaborated at UTFPR-DV in an experiment that has been carried out since 2010. The experimental design is a randomized complete block design with three replications, with the combinations of summer and winter cover plants preceding the maize crop. The winter lots are composed of 8 treatments: black oats; ryegrass; rye; Lupine white; Common vetch; Fodder turnip; Oat + vetch; And oats + vetch + turnip. The summer lots are composed of 8 treatments: Crotalaria juncea; Crotalaria spectabilis; Pork bean; Pigeon peacock; Lab lab; Mucuna dwarf; Black Mucuna; And in fallow. These winter and summer lots are subdivided with the use of mineral nitrogen (urea) at the rate of 180 kg / ha (applied to corn cover) and without the use of minerals N, P, K, Ca, Mg, SB, O CTC at pH 7.0, V%, MO, Carbon (stock), pH were analyzed for soil fertility in stratified samples up to 20 cm deep. (In water and SMP index), Al and H + Al. The observed results were alterations in the attributes evaluated as a function of the cover plants used and the presence or absence of mineral nitrogen. The N, K, Ca, Mg, SB, CTC at pH 7.0, Carbon, pH in water and Al content due to the use of mineral N occurred in the subdivided plots using winter cover crops. Interaction between the species used and the dose of N for the P content of the soil. In the plots subdivided with the use of summer cover plants, changes in P, Mg, pH in water and Al due to the use of mineral N occurred. |
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